diff options
Diffstat (limited to 'arch')
100 files changed, 2037 insertions, 2669 deletions
diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S index 3d890a98a08..f937ad12385 100644 --- a/arch/alpha/kernel/vmlinux.lds.S +++ b/arch/alpha/kernel/vmlinux.lds.S @@ -39,7 +39,7 @@ SECTIONS __init_begin = ALIGN(PAGE_SIZE); INIT_TEXT_SECTION(PAGE_SIZE) INIT_DATA_SECTION(16) - PERCPU(L1_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) /* Align to THREAD_SIZE rather than PAGE_SIZE here so any padding page needed for the THREAD_SIZE aligned init_task gets freed after init */ . = ALIGN(THREAD_SIZE); diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index b4348e62ef0..e5287f21bad 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -82,7 +82,7 @@ SECTIONS #endif } - PERCPU(32, PAGE_SIZE) + PERCPU_SECTION(32) #ifndef CONFIG_XIP_KERNEL . = ALIGN(PAGE_SIZE); diff --git a/arch/arm/mach-tegra/include/mach/kbc.h b/arch/arm/mach-tegra/include/mach/kbc.h index 04c779832c7..4f3572a1c68 100644 --- a/arch/arm/mach-tegra/include/mach/kbc.h +++ b/arch/arm/mach-tegra/include/mach/kbc.h @@ -50,13 +50,11 @@ struct tegra_kbc_platform_data { unsigned int debounce_cnt; unsigned int repeat_cnt; - unsigned int wake_cnt; /* 0:wake on any key >1:wake on wake_cfg */ - const struct tegra_kbc_wake_key *wake_cfg; - struct tegra_kbc_pin_cfg pin_cfg[KBC_MAX_GPIO]; const struct matrix_keymap_data *keymap_data; bool wakeup; bool use_fn_map; + bool use_ghost_filter; }; #endif diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 6e1907fa94f..bb26f40493e 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -204,7 +204,7 @@ static struct i2c_board_info __initdata mop500_i2c2_devices[] = { }, }; -#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \ +#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, t_out, _sm) \ static struct nmk_i2c_controller u8500_i2c##id##_data = { \ /* \ * slave data setup time, which is \ @@ -219,19 +219,21 @@ static struct nmk_i2c_controller u8500_i2c##id##_data = { \ .rft = _rft, \ /* std. mode operation */ \ .clk_freq = clk, \ + /* Slave response timeout(ms) */\ + .timeout = t_out, \ .sm = _sm, \ } /* * The board uses 4 i2c controllers, initialize all of * them with slave data setup time of 250 ns, - * Tx & Rx FIFO threshold values as 1 and standard + * Tx & Rx FIFO threshold values as 8 and standard * mode of operation */ -U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); +U8500_I2C_CONTROLLER(0, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(1, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(2, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(3, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); static void __init mop500_i2c_init(void) { diff --git a/arch/arm/plat-nomadik/include/plat/i2c.h b/arch/arm/plat-nomadik/include/plat/i2c.h index 1621db67a53..8ba70ffc31e 100644 --- a/arch/arm/plat-nomadik/include/plat/i2c.h +++ b/arch/arm/plat-nomadik/include/plat/i2c.h @@ -11,8 +11,8 @@ enum i2c_freq_mode { I2C_FREQ_MODE_STANDARD, /* up to 100 Kb/s */ I2C_FREQ_MODE_FAST, /* up to 400 Kb/s */ + I2C_FREQ_MODE_HIGH_SPEED, /* up to 3.4 Mb/s */ I2C_FREQ_MODE_FAST_PLUS, /* up to 1 Mb/s */ - I2C_FREQ_MODE_HIGH_SPEED /* up to 3.4 Mb/s */ }; /** @@ -24,13 +24,15 @@ enum i2c_freq_mode { * to the values of 14, 6, 2 for a 48 MHz i2c clk * @tft: Tx FIFO Threshold in bytes * @rft: Rx FIFO Threshold in bytes + * @timeout Slave response timeout(ms) * @sm: speed mode */ struct nmk_i2c_controller { unsigned long clk_freq; unsigned short slsu; - unsigned char tft; - unsigned char rft; + unsigned char tft; + unsigned char rft; + int timeout; enum i2c_freq_mode sm; }; diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S index 854fa49f1c3..8d85c8c6f85 100644 --- a/arch/blackfin/kernel/vmlinux.lds.S +++ b/arch/blackfin/kernel/vmlinux.lds.S @@ -136,7 +136,7 @@ SECTIONS . = ALIGN(16); INIT_DATA_SECTION(16) - PERCPU(32, PAGE_SIZE) + PERCPU_SECTION(32) .exit.data : { diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S index 728bbd9e7d4..a6990cb0f09 100644 --- a/arch/cris/kernel/vmlinux.lds.S +++ b/arch/cris/kernel/vmlinux.lds.S @@ -102,7 +102,7 @@ SECTIONS #endif __vmlinux_end = .; /* Last address of the physical file. */ #ifdef CONFIG_ETRAX_ARCH_V32 - PERCPU(32, PAGE_SIZE) + PERCPU_SECTION(32) .init.ramfs : { INIT_RAM_FS diff --git a/arch/frv/kernel/vmlinux.lds.S b/arch/frv/kernel/vmlinux.lds.S index 0daae8af578..7e958d829ec 100644 --- a/arch/frv/kernel/vmlinux.lds.S +++ b/arch/frv/kernel/vmlinux.lds.S @@ -37,7 +37,7 @@ SECTIONS _einittext = .; INIT_DATA_SECTION(8) - PERCPU(L1_CACHE_BYTES, 4096) + PERCPU_SECTION(L1_CACHE_BYTES) . = ALIGN(PAGE_SIZE); __init_end = .; diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S index cf95aec7746..018e4a711d7 100644 --- a/arch/m32r/kernel/vmlinux.lds.S +++ b/arch/m32r/kernel/vmlinux.lds.S @@ -54,7 +54,7 @@ SECTIONS __init_begin = .; INIT_TEXT_SECTION(PAGE_SIZE) INIT_DATA_SECTION(16) - PERCPU(32, PAGE_SIZE) + PERCPU_SECTION(32) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 75531da02a4..d66e34c718d 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -5,6 +5,7 @@ config M68K select HAVE_AOUT if MMU select GENERIC_ATOMIC64 if MMU select HAVE_GENERIC_HARDIRQS if !MMU + select GENERIC_IRQ_SHOW if !MMU config RWSEM_GENERIC_SPINLOCK bool diff --git a/arch/m68k/include/asm/bitops_no.h b/arch/m68k/include/asm/bitops_no.h index 7d3779fdc5b..6b0e2d349f0 100644 --- a/arch/m68k/include/asm/bitops_no.h +++ b/arch/m68k/include/asm/bitops_no.h @@ -246,23 +246,7 @@ static inline int __test_and_clear_bit_le(int nr, volatile void *addr) return retval; } -#define ext2_set_bit_atomic(lock, nr, addr) \ - ({ \ - int ret; \ - spin_lock(lock); \ - ret = __test_and_set_bit_le((nr), (addr)); \ - spin_unlock(lock); \ - ret; \ - }) - -#define ext2_clear_bit_atomic(lock, nr, addr) \ - ({ \ - int ret; \ - spin_lock(lock); \ - ret = __test_and_clear_bit_le((nr), (addr)); \ - spin_unlock(lock); \ - ret; \ - }) +#include <asm-generic/bitops/ext2-atomic.h> static inline int test_bit_le(int nr, const volatile void *addr) { diff --git a/arch/m68k/include/asm/io_no.h b/arch/m68k/include/asm/io_no.h index cf20f3097af..353bf754a97 100644 --- a/arch/m68k/include/asm/io_no.h +++ b/arch/m68k/include/asm/io_no.h @@ -144,8 +144,10 @@ static inline void io_insl(unsigned int addr, void *buf, int len) #define IOMAP_NOCACHE_NONSER 2 #define IOMAP_WRITETHROUGH 3 -extern void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag); - +static inline void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) +{ + return (void *) physaddr; +} static inline void *ioremap(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); @@ -163,7 +165,7 @@ static inline void *ioremap_fullcache(unsigned long physaddr, unsigned long size return __ioremap(physaddr, size, IOMAP_FULL_CACHING); } -extern void iounmap(void *addr); +#define iounmap(addr) do { } while(0) /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c index 59a69a5c62f..983fed9d469 100644 --- a/arch/m68k/kernel/asm-offsets.c +++ b/arch/m68k/kernel/asm-offsets.c @@ -1,5 +1,105 @@ -#ifdef CONFIG_MMU -#include "asm-offsets_mm.c" +/* + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + */ + +#define ASM_OFFSETS_C + +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/kernel_stat.h> +#include <linux/kbuild.h> +#include <asm/bootinfo.h> +#include <asm/irq.h> +#include <asm/amigahw.h> +#include <linux/font.h> + +int main(void) +{ + /* offsets into the task struct */ + DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); + DEFINE(TASK_MM, offsetof(struct task_struct, mm)); + DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); + DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info)); + + /* offsets into the thread struct */ + DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); + DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); + DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); + DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); + DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); + DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); + DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); + DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); + DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); + + /* offsets into the thread_info struct */ + DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count)); + DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags)); + + /* offsets into the pt_regs */ + DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); + DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); + DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); + DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); + DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); + DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); + DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); + DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); + DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); + DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); + DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); + DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); + + /* bitfields are a bit difficult */ +#ifdef CONFIG_COLDFIRE + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2); #else -#include "asm-offsets_no.c" + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); +#endif + + /* offsets into the irq_cpustat_t struct */ + DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); + + /* signal defines */ + DEFINE(LSIGSEGV, SIGSEGV); + DEFINE(LSEGV_MAPERR, SEGV_MAPERR); + DEFINE(LSIGTRAP, SIGTRAP); + DEFINE(LTRAP_TRACE, TRAP_TRACE); + +#ifdef CONFIG_MMU + /* offsets into the bi_record struct */ + DEFINE(BIR_TAG, offsetof(struct bi_record, tag)); + DEFINE(BIR_SIZE, offsetof(struct bi_record, size)); + DEFINE(BIR_DATA, offsetof(struct bi_record, data)); + + /* offsets into font_desc (drivers/video/console/font.h) */ + DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx)); + DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name)); + DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width)); + DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height)); + DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data)); + DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref)); + + /* offsets into the custom struct */ + DEFINE(CUSTOMBASE, &amiga_custom); + DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar)); + DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr)); + DEFINE(C_INTENA, offsetof(struct CUSTOM, intena)); + DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq)); + DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr)); + DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat)); + DEFINE(C_SERPER, offsetof(struct CUSTOM, serper)); + DEFINE(CIAABASE, &ciaa); + DEFINE(CIABBASE, &ciab); + DEFINE(C_PRA, offsetof(struct CIA, pra)); + DEFINE(ZTWOBASE, zTwoBase); #endif + + return 0; +} diff --git a/arch/m68k/kernel/asm-offsets_mm.c b/arch/m68k/kernel/asm-offsets_mm.c deleted file mode 100644 index 78e59b82ebc..00000000000 --- a/arch/m68k/kernel/asm-offsets_mm.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * This program is used to generate definitions needed by - * assembly language modules. - * - * We use the technique used in the OSF Mach kernel code: - * generate asm statements containing #defines, - * compile this file to assembler, and then extract the - * #defines from the assembly-language output. - */ - -#define ASM_OFFSETS_C - -#include <linux/stddef.h> -#include <linux/sched.h> -#include <linux/kernel_stat.h> -#include <linux/kbuild.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/amigahw.h> -#include <linux/font.h> - -int main(void) -{ - /* offsets into the task struct */ - DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); - DEFINE(TASK_MM, offsetof(struct task_struct, mm)); -#ifdef CONFIG_MMU - DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info)); -#endif - - /* offsets into the thread struct */ - DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); - DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); - DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); - DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); - DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); - DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); - DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); - DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); - DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); - - /* offsets into the thread_info struct */ - DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count)); - DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags)); - - /* offsets into the pt_regs */ - DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); - DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); - DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); - DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); - DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); - DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); - DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); - DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); - DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); - DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); - DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); - DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); - /* bitfields are a bit difficult */ - DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); - - /* offsets into the irq_cpustat_t struct */ - DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); - - /* offsets into the bi_record struct */ - DEFINE(BIR_TAG, offsetof(struct bi_record, tag)); - DEFINE(BIR_SIZE, offsetof(struct bi_record, size)); - DEFINE(BIR_DATA, offsetof(struct bi_record, data)); - - /* offsets into font_desc (drivers/video/console/font.h) */ - DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx)); - DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name)); - DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width)); - DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height)); - DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data)); - DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref)); - - /* signal defines */ - DEFINE(LSIGSEGV, SIGSEGV); - DEFINE(LSEGV_MAPERR, SEGV_MAPERR); - DEFINE(LSIGTRAP, SIGTRAP); - DEFINE(LTRAP_TRACE, TRAP_TRACE); - - /* offsets into the custom struct */ - DEFINE(CUSTOMBASE, &amiga_custom); - DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar)); - DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr)); - DEFINE(C_INTENA, offsetof(struct CUSTOM, intena)); - DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq)); - DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr)); - DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat)); - DEFINE(C_SERPER, offsetof(struct CUSTOM, serper)); - DEFINE(CIAABASE, &ciaa); - DEFINE(CIABBASE, &ciab); - DEFINE(C_PRA, offsetof(struct CIA, pra)); - DEFINE(ZTWOBASE, zTwoBase); - - return 0; -} diff --git a/arch/m68k/kernel/asm-offsets_no.c b/arch/m68k/kernel/asm-offsets_no.c deleted file mode 100644 index ffe02f41ad4..00000000000 --- a/arch/m68k/kernel/asm-offsets_no.c +++ /dev/null @@ -1,76 +0,0 @@ -/* - * This program is used to generate definitions needed by - * assembly language modules. - * - * We use the technique used in the OSF Mach kernel code: - * generate asm statements containing #defines, - * compile this file to assembler, and then extract the - * #defines from the assembly-language output. - */ - -#include <linux/stddef.h> -#include <linux/sched.h> -#include <linux/kernel_stat.h> -#include <linux/ptrace.h> -#include <linux/hardirq.h> -#include <linux/kbuild.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/thread_info.h> - -int main(void) -{ - /* offsets into the task struct */ - DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_MM, offsetof(struct task_struct, mm)); - - /* offsets into the irq_cpustat_t struct */ - DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); - - /* offsets into the thread struct */ - DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); - DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); - DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); - DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); - DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); - DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); - DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); - DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); - DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); - - /* offsets into the pt_regs */ - DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); - DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); - DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); - DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); - DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); - DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); - DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); - DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); - DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); - DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); - DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); - DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); - -#ifdef CONFIG_COLDFIRE - /* bitfields are a bit difficult */ - DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2); -#else - /* bitfields are a bit difficult */ - DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); -#endif - - /* signal defines */ - DEFINE(SIGSEGV, SIGSEGV); - DEFINE(SEGV_MAPERR, SEGV_MAPERR); - DEFINE(SIGTRAP, SIGTRAP); - DEFINE(TRAP_TRACE, TRAP_TRACE); - - DEFINE(PT_PTRACED, PT_PTRACED); - - /* Offsets in thread_info structure */ - DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); - DEFINE(TI_PREEMPTCOUNT, offsetof(struct thread_info, preempt_count)); - - return 0; -} diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S index 2783f25e38b..5f0f6b598b5 100644 --- a/arch/m68k/kernel/entry_no.S +++ b/arch/m68k/kernel/entry_no.S @@ -24,7 +24,6 @@ * linux 2.4 support David McCullough <davidm@snapgear.com> */ -#include <linux/sys.h> #include <linux/linkage.h> #include <asm/errno.h> #include <asm/setup.h> diff --git a/arch/m68k/kernel/irq.c b/arch/m68k/kernel/irq.c index 15dbc3e9d20..544b8717d49 100644 --- a/arch/m68k/kernel/irq.c +++ b/arch/m68k/kernel/irq.c @@ -28,31 +28,3 @@ asmlinkage void do_IRQ(int irq, struct pt_regs *regs) set_irq_regs(oldregs); } - -int show_interrupts(struct seq_file *p, void *v) -{ - struct irqaction *ap; - int irq = *((loff_t *) v); - - if (irq == 0) - seq_puts(p, " CPU0\n"); - - if (irq < NR_IRQS) { - struct irq_desc *desc = irq_to_desc(irq); - - ap = desc->action; - if (ap) { - seq_printf(p, "%3d: ", irq); - seq_printf(p, "%10u ", kstat_irqs(irq)); - seq_printf(p, "%14s ", irq_desc_get_chip(desc)->name); - - seq_printf(p, "%s", ap->name); - for (ap = ap->next; ap; ap = ap->next) - seq_printf(p, ", %s", ap->name); - seq_putc(p, '\n'); - } - } - - return 0; -} - diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c index 4752c28ce0a..33f82769547 100644 --- a/arch/m68k/kernel/m68k_ksyms.c +++ b/arch/m68k/kernel/m68k_ksyms.c @@ -1,5 +1,33 @@ -#ifdef CONFIG_MMU -#include "m68k_ksyms_mm.c" -#else -#include "m68k_ksyms_no.c" +#include <linux/module.h> + +asmlinkage long long __ashldi3 (long long, int); +asmlinkage long long __ashrdi3 (long long, int); +asmlinkage long long __lshrdi3 (long long, int); +asmlinkage long long __muldi3 (long long, long long); + +/* The following are special because they're not called + explicitly (the C compiler generates them). Fortunately, + their interface isn't gonna change any time soon now, so + it's OK to leave it out of version control. */ +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__muldi3); + +#if !defined(__mc68020__) && !defined(__mc68030__) && \ + !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcpu32__) +/* + * Simpler 68k and ColdFire parts also need a few other gcc functions. + */ +extern long long __divsi3(long long, long long); +extern long long __modsi3(long long, long long); +extern long long __mulsi3(long long, long long); +extern long long __udivsi3(long long, long long); +extern long long __umodsi3(long long, long long); + +EXPORT_SYMBOL(__divsi3); +EXPORT_SYMBOL(__modsi3); +EXPORT_SYMBOL(__mulsi3); +EXPORT_SYMBOL(__udivsi3); +EXPORT_SYMBOL(__umodsi3); #endif diff --git a/arch/m68k/kernel/m68k_ksyms_mm.c b/arch/m68k/kernel/m68k_ksyms_mm.c deleted file mode 100644 index d900e77e536..00000000000 --- a/arch/m68k/kernel/m68k_ksyms_mm.c +++ /dev/null @@ -1,16 +0,0 @@ -#include <linux/module.h> - -asmlinkage long long __ashldi3 (long long, int); -asmlinkage long long __ashrdi3 (long long, int); -asmlinkage long long __lshrdi3 (long long, int); -asmlinkage long long __muldi3 (long long, long long); - -/* The following are special because they're not called - explicitly (the C compiler generates them). Fortunately, - their interface isn't gonna change any time soon now, so - it's OK to leave it out of version control. */ -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__lshrdi3); -EXPORT_SYMBOL(__muldi3); - diff --git a/arch/m68k/kernel/m68k_ksyms_no.c b/arch/m68k/kernel/m68k_ksyms_no.c deleted file mode 100644 index 39fe0a7aec3..00000000000 --- a/arch/m68k/kernel/m68k_ksyms_no.c +++ /dev/null @@ -1,78 +0,0 @@ -#include <linux/module.h> -#include <linux/linkage.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/user.h> -#include <linux/elfcore.h> -#include <linux/in6.h> -#include <linux/interrupt.h> - -#include <asm/setup.h> -#include <asm/machdep.h> -#include <asm/pgalloc.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/checksum.h> -#include <asm/current.h> - -extern int dump_fpu(struct pt_regs *, elf_fpregset_t *); - -/* platform dependent support */ - -EXPORT_SYMBOL(__ioremap); -EXPORT_SYMBOL(iounmap); -EXPORT_SYMBOL(dump_fpu); - -EXPORT_SYMBOL(ip_fast_csum); - -EXPORT_SYMBOL(kernel_thread); - -/* Networking helper routines. */ -EXPORT_SYMBOL(csum_partial_copy_nocheck); - -/* The following are special because they're not called - explicitly (the C compiler generates them). Fortunately, - their interface isn't gonna change any time soon now, so - it's OK to leave it out of version control. */ -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(memset); - -/* - * libgcc functions - functions that are used internally by the - * compiler... (prototypes are not correct though, but that - * doesn't really matter since they're not versioned). - */ -extern void __ashldi3(void); -extern void __ashrdi3(void); -extern void __divsi3(void); -extern void __lshrdi3(void); -extern void __modsi3(void); -extern void __muldi3(void); -extern void __mulsi3(void); -extern void __udivsi3(void); -extern void __umodsi3(void); - - /* gcc lib functions */ -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__divsi3); -EXPORT_SYMBOL(__lshrdi3); -EXPORT_SYMBOL(__modsi3); -EXPORT_SYMBOL(__muldi3); -EXPORT_SYMBOL(__mulsi3); -EXPORT_SYMBOL(__udivsi3); -EXPORT_SYMBOL(__umodsi3); - -#ifdef CONFIG_COLDFIRE -extern unsigned int *dma_device_address; -extern unsigned long dma_base_addr, _ramend; -EXPORT_SYMBOL(dma_base_addr); -EXPORT_SYMBOL(dma_device_address); -EXPORT_SYMBOL(_ramend); - -extern asmlinkage void trap(void); -extern void *_ramvec; -EXPORT_SYMBOL(trap); -EXPORT_SYMBOL(_ramvec); -#endif /* CONFIG_COLDFIRE */ diff --git a/arch/m68k/kernel/process_no.c b/arch/m68k/kernel/process_no.c index e2a63af5d51..9b86ad11c68 100644 --- a/arch/m68k/kernel/process_no.c +++ b/arch/m68k/kernel/process_no.c @@ -151,6 +151,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) set_fs(fs); return retval; } +EXPORT_SYMBOL(kernel_thread); void flush_thread(void) { @@ -283,6 +284,7 @@ int dump_fpu(struct pt_regs *regs, struct user_m68kfp_struct *fpu) #endif return 1; } +EXPORT_SYMBOL(dump_fpu); /* * Generic dumping code. Used for panic and debug. diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 63013df3358..8623f8dc16f 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -1,5 +1,580 @@ +/* + * linux/arch/m68k/kernel/sys_m68k.c + * + * This file contains various random system calls that + * have a non-standard calling sequence on the Linux/m68k + * platform. + */ + +#include <linux/capability.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/fs.h> +#include <linux/smp.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/shm.h> +#include <linux/stat.h> +#include <linux/syscalls.h> +#include <linux/mman.h> +#include <linux/file.h> +#include <linux/ipc.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/cachectl.h> +#include <asm/traps.h> +#include <asm/page.h> +#include <asm/unistd.h> +#include <asm/cacheflush.h> + #ifdef CONFIG_MMU -#include "sys_m68k_mm.c" + +#include <asm/tlb.h> + +asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, + unsigned long error_code); + +asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) +{ + /* + * This is wrong for sun3 - there PAGE_SIZE is 8Kb, + * so we need to shift the argument down by 1; m68k mmap64(3) + * (in libc) expects the last argument of mmap2 in 4Kb units. + */ + return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); +} + +/* Convert virtual (user) address VADDR to physical address PADDR */ +#define virt_to_phys_040(vaddr) \ +({ \ + unsigned long _mmusr, _paddr; \ + \ + __asm__ __volatile__ (".chip 68040\n\t" \ + "ptestr (%1)\n\t" \ + "movec %%mmusr,%0\n\t" \ + ".chip 68k" \ + : "=r" (_mmusr) \ + : "a" (vaddr)); \ + _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0; \ + _paddr; \ +}) + +static inline int +cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len) +{ + unsigned long paddr, i; + + switch (scope) + { + case FLUSH_SCOPE_ALL: + switch (cache) + { + case FLUSH_CACHE_DATA: + /* This nop is needed for some broken versions of the 68040. */ + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %dc\n\t" + ".chip 68k"); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %ic\n\t" + ".chip 68k"); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %bc\n\t" + ".chip 68k"); + break; + } + break; + + case FLUSH_SCOPE_LINE: + /* Find the physical address of the first mapped page in the + address range. */ + if ((paddr = virt_to_phys_040(addr))) { + paddr += addr & ~(PAGE_MASK | 15); + len = (len + (addr & 15) + 15) >> 4; + } else { + unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); + + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + tmp = PAGE_SIZE; + for (;;) + { + if ((paddr = virt_to_phys_040(addr))) + break; + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + } + len = (len + 15) >> 4; + } + i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; + while (len--) + { + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + if (!--i && len) + { + /* + * No need to page align here since it is done by + * virt_to_phys_040(). + */ + addr += PAGE_SIZE; + i = PAGE_SIZE / 16; + /* Recompute physical address when crossing a page + boundary. */ + for (;;) + { + if ((paddr = virt_to_phys_040(addr))) + break; + if (len <= i) + return 0; + len -= i; + addr += PAGE_SIZE; + } + } + else + paddr += 16; + } + break; + + default: + case FLUSH_SCOPE_PAGE: + len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); + for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) + { + if (!(paddr = virt_to_phys_040(addr))) + continue; + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + } + break; + } + return 0; +} + +#define virt_to_phys_060(vaddr) \ +({ \ + unsigned long paddr; \ + __asm__ __volatile__ (".chip 68060\n\t" \ + "plpar (%0)\n\t" \ + ".chip 68k" \ + : "=a" (paddr) \ + : "0" (vaddr)); \ + (paddr); /* XXX */ \ +}) + +static inline int +cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len) +{ + unsigned long paddr, i; + + /* + * 68060 manual says: + * cpush %dc : flush DC, remains valid (with our %cacr setup) + * cpush %ic : invalidate IC + * cpush %bc : flush DC + invalidate IC + */ + switch (scope) + { + case FLUSH_SCOPE_ALL: + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %dc\n\t" + ".chip 68k"); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %ic\n\t" + ".chip 68k"); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %bc\n\t" + ".chip 68k"); + break; + } + break; + + case FLUSH_SCOPE_LINE: + /* Find the physical address of the first mapped page in the + address range. */ + len += addr & 15; + addr &= -16; + if (!(paddr = virt_to_phys_060(addr))) { + unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); + + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + tmp = PAGE_SIZE; + for (;;) + { + if ((paddr = virt_to_phys_060(addr))) + break; + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + } + } + len = (len + 15) >> 4; + i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; + while (len--) + { + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + if (!--i && len) + { + + /* + * We just want to jump to the first cache line + * in the next page. + */ + addr += PAGE_SIZE; + addr &= PAGE_MASK; + + i = PAGE_SIZE / 16; + /* Recompute physical address when crossing a page + boundary. */ + for (;;) + { + if ((paddr = virt_to_phys_060(addr))) + break; + if (len <= i) + return 0; + len -= i; + addr += PAGE_SIZE; + } + } + else + paddr += 16; + } + break; + + default: + case FLUSH_SCOPE_PAGE: + len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); + addr &= PAGE_MASK; /* Workaround for bug in some + revisions of the 68060 */ + for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) + { + if (!(paddr = virt_to_phys_060(addr))) + continue; + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + } + break; + } + return 0; +} + +/* sys_cacheflush -- flush (part of) the processor cache. */ +asmlinkage int +sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) +{ + struct vm_area_struct *vma; + int ret = -EINVAL; + + if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL || + cache & ~FLUSH_CACHE_BOTH) + goto out; + + if (scope == FLUSH_SCOPE_ALL) { + /* Only the superuser may explicitly flush the whole cache. */ + ret = -EPERM; + if (!capable(CAP_SYS_ADMIN)) + goto out; + } else { + /* + * Verify that the specified address region actually belongs + * to this process. + */ + vma = find_vma (current->mm, addr); + ret = -EINVAL; + /* Check for overflow. */ + if (addr + len < addr) + goto out; + if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) + goto out; + } + + if (CPU_IS_020_OR_030) { + if (scope == FLUSH_SCOPE_LINE && len < 256) { + unsigned long cacr; + __asm__ ("movec %%cacr, %0" : "=r" (cacr)); + if (cache & FLUSH_CACHE_INSN) + cacr |= 4; + if (cache & FLUSH_CACHE_DATA) + cacr |= 0x400; + len >>= 2; + while (len--) { + __asm__ __volatile__ ("movec %1, %%caar\n\t" + "movec %0, %%cacr" + : /* no outputs */ + : "r" (cacr), "r" (addr)); + addr += 4; + } + } else { + /* Flush the whole cache, even if page granularity requested. */ + unsigned long cacr; + __asm__ ("movec %%cacr, %0" : "=r" (cacr)); + if (cache & FLUSH_CACHE_INSN) + cacr |= 8; + if (cache & FLUSH_CACHE_DATA) + cacr |= 0x800; + __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr)); + } + ret = 0; + goto out; + } else { + /* + * 040 or 060: don't blindly trust 'scope', someone could + * try to flush a few megs of memory. + */ + + if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE) + scope=FLUSH_SCOPE_PAGE; + if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL) + scope=FLUSH_SCOPE_ALL; + if (CPU_IS_040) { + ret = cache_flush_040 (addr, scope, cache, len); + } else if (CPU_IS_060) { + ret = cache_flush_060 (addr, scope, cache, len); + } + } +out: + return ret; +} + +/* This syscall gets its arguments in A0 (mem), D2 (oldval) and + D1 (newval). */ +asmlinkage int +sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, + unsigned long __user * mem) +{ + /* This was borrowed from ARM's implementation. */ + for (;;) { + struct mm_struct *mm = current->mm; + pgd_t *pgd; + pmd_t *pmd; + pte_t *pte; + spinlock_t *ptl; + unsigned long mem_value; + + down_read(&mm->mmap_sem); + pgd = pgd_offset(mm, (unsigned long)mem); + if (!pgd_present(*pgd)) + goto bad_access; + pmd = pmd_offset(pgd, (unsigned long)mem); + if (!pmd_present(*pmd)) + goto bad_access; + pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl); + if (!pte_present(*pte) || !pte_dirty(*pte) + || !pte_write(*pte)) { + pte_unmap_unlock(pte, ptl); + goto bad_access; + } + + mem_value = *mem; + if (mem_value == oldval) + *mem = newval; + + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return mem_value; + + bad_access: + up_read(&mm->mmap_sem); + /* This is not necessarily a bad access, we can get here if + a memory we're trying to write to should be copied-on-write. + Make the kernel do the necessary page stuff, then re-iterate. + Simulate a write access fault to do that. */ + { + /* The first argument of the function corresponds to + D1, which is the first field of struct pt_regs. */ + struct pt_regs *fp = (struct pt_regs *)&newval; + + /* '3' is an RMW flag. */ + if (do_page_fault(fp, (unsigned long)mem, 3)) + /* If the do_page_fault() failed, we don't + have anything meaningful to return. + There should be a SIGSEGV pending for + the process. */ + return 0xdeadbeef; + } + } +} + #else -#include "sys_m68k_no.c" -#endif + +/* sys_cacheflush -- flush (part of) the processor cache. */ +asmlinkage int +sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) +{ + flush_cache_all(); + return 0; +} + +/* This syscall gets its arguments in A0 (mem), D2 (oldval) and + D1 (newval). */ +asmlinkage int +sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, + unsigned long __user * mem) +{ + struct mm_struct *mm = current->mm; + unsigned long mem_value; + + down_read(&mm->mmap_sem); + + mem_value = *mem; + if (mem_value == oldval) + *mem = newval; + + up_read(&mm->mmap_sem); + return mem_value; +} + +#endif /* CONFIG_MMU */ + +asmlinkage int sys_getpagesize(void) +{ + return PAGE_SIZE; +} + +/* + * Do a system call from kernel instead of calling sys_execve so we + * end up with proper pt_regs. + */ +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) +{ + register long __res asm ("%d0") = __NR_execve; + register long __a asm ("%d1") = (long)(filename); + register long __b asm ("%d2") = (long)(argv); + register long __c asm ("%d3") = (long)(envp); + asm volatile ("trap #0" : "+d" (__res) + : "d" (__a), "d" (__b), "d" (__c)); + return __res; +} + +asmlinkage unsigned long sys_get_thread_area(void) +{ + return current_thread_info()->tp_value; +} + +asmlinkage int sys_set_thread_area(unsigned long tp) +{ + current_thread_info()->tp_value = tp; + return 0; +} + +asmlinkage int sys_atomic_barrier(void) +{ + /* no code needed for uniprocs */ + return 0; +} diff --git a/arch/m68k/kernel/sys_m68k_mm.c b/arch/m68k/kernel/sys_m68k_mm.c deleted file mode 100644 index 3db2e7f902a..00000000000 --- a/arch/m68k/kernel/sys_m68k_mm.c +++ /dev/null @@ -1,546 +0,0 @@ -/* - * linux/arch/m68k/kernel/sys_m68k.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/m68k - * platform. - */ - -#include <linux/capability.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/ipc.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/cachectl.h> -#include <asm/traps.h> -#include <asm/page.h> -#include <asm/unistd.h> -#include <linux/elf.h> -#include <asm/tlb.h> - -asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, - unsigned long error_code); - -asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - /* - * This is wrong for sun3 - there PAGE_SIZE is 8Kb, - * so we need to shift the argument down by 1; m68k mmap64(3) - * (in libc) expects the last argument of mmap2 in 4Kb units. - */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); -} - -/* Convert virtual (user) address VADDR to physical address PADDR */ -#define virt_to_phys_040(vaddr) \ -({ \ - unsigned long _mmusr, _paddr; \ - \ - __asm__ __volatile__ (".chip 68040\n\t" \ - "ptestr (%1)\n\t" \ - "movec %%mmusr,%0\n\t" \ - ".chip 68k" \ - : "=r" (_mmusr) \ - : "a" (vaddr)); \ - _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0; \ - _paddr; \ -}) - -static inline int -cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len) -{ - unsigned long paddr, i; - - switch (scope) - { - case FLUSH_SCOPE_ALL: - switch (cache) - { - case FLUSH_CACHE_DATA: - /* This nop is needed for some broken versions of the 68040. */ - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %dc\n\t" - ".chip 68k"); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %ic\n\t" - ".chip 68k"); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %bc\n\t" - ".chip 68k"); - break; - } - break; - - case FLUSH_SCOPE_LINE: - /* Find the physical address of the first mapped page in the - address range. */ - if ((paddr = virt_to_phys_040(addr))) { - paddr += addr & ~(PAGE_MASK | 15); - len = (len + (addr & 15) + 15) >> 4; - } else { - unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); - - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - tmp = PAGE_SIZE; - for (;;) - { - if ((paddr = virt_to_phys_040(addr))) - break; - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - } - len = (len + 15) >> 4; - } - i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; - while (len--) - { - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - if (!--i && len) - { - /* - * No need to page align here since it is done by - * virt_to_phys_040(). - */ - addr += PAGE_SIZE; - i = PAGE_SIZE / 16; - /* Recompute physical address when crossing a page - boundary. */ - for (;;) - { - if ((paddr = virt_to_phys_040(addr))) - break; - if (len <= i) - return 0; - len -= i; - addr += PAGE_SIZE; - } - } - else - paddr += 16; - } - break; - - default: - case FLUSH_SCOPE_PAGE: - len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); - for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) - { - if (!(paddr = virt_to_phys_040(addr))) - continue; - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - } - break; - } - return 0; -} - -#define virt_to_phys_060(vaddr) \ -({ \ - unsigned long paddr; \ - __asm__ __volatile__ (".chip 68060\n\t" \ - "plpar (%0)\n\t" \ - ".chip 68k" \ - : "=a" (paddr) \ - : "0" (vaddr)); \ - (paddr); /* XXX */ \ -}) - -static inline int -cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len) -{ - unsigned long paddr, i; - - /* - * 68060 manual says: - * cpush %dc : flush DC, remains valid (with our %cacr setup) - * cpush %ic : invalidate IC - * cpush %bc : flush DC + invalidate IC - */ - switch (scope) - { - case FLUSH_SCOPE_ALL: - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %dc\n\t" - ".chip 68k"); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %ic\n\t" - ".chip 68k"); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %bc\n\t" - ".chip 68k"); - break; - } - break; - - case FLUSH_SCOPE_LINE: - /* Find the physical address of the first mapped page in the - address range. */ - len += addr & 15; - addr &= -16; - if (!(paddr = virt_to_phys_060(addr))) { - unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); - - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - tmp = PAGE_SIZE; - for (;;) - { - if ((paddr = virt_to_phys_060(addr))) - break; - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - } - } - len = (len + 15) >> 4; - i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; - while (len--) - { - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - if (!--i && len) - { - - /* - * We just want to jump to the first cache line - * in the next page. - */ - addr += PAGE_SIZE; - addr &= PAGE_MASK; - - i = PAGE_SIZE / 16; - /* Recompute physical address when crossing a page - boundary. */ - for (;;) - { - if ((paddr = virt_to_phys_060(addr))) - break; - if (len <= i) - return 0; - len -= i; - addr += PAGE_SIZE; - } - } - else - paddr += 16; - } - break; - - default: - case FLUSH_SCOPE_PAGE: - len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); - addr &= PAGE_MASK; /* Workaround for bug in some - revisions of the 68060 */ - for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) - { - if (!(paddr = virt_to_phys_060(addr))) - continue; - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - } - break; - } - return 0; -} - -/* sys_cacheflush -- flush (part of) the processor cache. */ -asmlinkage int -sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) -{ - struct vm_area_struct *vma; - int ret = -EINVAL; - - if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL || - cache & ~FLUSH_CACHE_BOTH) - goto out; - - if (scope == FLUSH_SCOPE_ALL) { - /* Only the superuser may explicitly flush the whole cache. */ - ret = -EPERM; - if (!capable(CAP_SYS_ADMIN)) - goto out; - } else { - /* - * Verify that the specified address region actually belongs - * to this process. - */ - vma = find_vma (current->mm, addr); - ret = -EINVAL; - /* Check for overflow. */ - if (addr + len < addr) - goto out; - if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) - goto out; - } - - if (CPU_IS_020_OR_030) { - if (scope == FLUSH_SCOPE_LINE && len < 256) { - unsigned long cacr; - __asm__ ("movec %%cacr, %0" : "=r" (cacr)); - if (cache & FLUSH_CACHE_INSN) - cacr |= 4; - if (cache & FLUSH_CACHE_DATA) - cacr |= 0x400; - len >>= 2; - while (len--) { - __asm__ __volatile__ ("movec %1, %%caar\n\t" - "movec %0, %%cacr" - : /* no outputs */ - : "r" (cacr), "r" (addr)); - addr += 4; - } - } else { - /* Flush the whole cache, even if page granularity requested. */ - unsigned long cacr; - __asm__ ("movec %%cacr, %0" : "=r" (cacr)); - if (cache & FLUSH_CACHE_INSN) - cacr |= 8; - if (cache & FLUSH_CACHE_DATA) - cacr |= 0x800; - __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr)); - } - ret = 0; - goto out; - } else { - /* - * 040 or 060: don't blindly trust 'scope', someone could - * try to flush a few megs of memory. - */ - - if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE) - scope=FLUSH_SCOPE_PAGE; - if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL) - scope=FLUSH_SCOPE_ALL; - if (CPU_IS_040) { - ret = cache_flush_040 (addr, scope, cache, len); - } else if (CPU_IS_060) { - ret = cache_flush_060 (addr, scope, cache, len); - } - } -out: - return ret; -} - -asmlinkage int sys_getpagesize(void) -{ - return PAGE_SIZE; -} - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - register long __res asm ("%d0") = __NR_execve; - register long __a asm ("%d1") = (long)(filename); - register long __b asm ("%d2") = (long)(argv); - register long __c asm ("%d3") = (long)(envp); - asm volatile ("trap #0" : "+d" (__res) - : "d" (__a), "d" (__b), "d" (__c)); - return __res; -} - -asmlinkage unsigned long sys_get_thread_area(void) -{ - return current_thread_info()->tp_value; -} - -asmlinkage int sys_set_thread_area(unsigned long tp) -{ - current_thread_info()->tp_value = tp; - return 0; -} - -/* This syscall gets its arguments in A0 (mem), D2 (oldval) and - D1 (newval). */ -asmlinkage int -sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, - unsigned long __user * mem) -{ - /* This was borrowed from ARM's implementation. */ - for (;;) { - struct mm_struct *mm = current->mm; - pgd_t *pgd; - pmd_t *pmd; - pte_t *pte; - spinlock_t *ptl; - unsigned long mem_value; - - down_read(&mm->mmap_sem); - pgd = pgd_offset(mm, (unsigned long)mem); - if (!pgd_present(*pgd)) - goto bad_access; - pmd = pmd_offset(pgd, (unsigned long)mem); - if (!pmd_present(*pmd)) - goto bad_access; - pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl); - if (!pte_present(*pte) || !pte_dirty(*pte) - || !pte_write(*pte)) { - pte_unmap_unlock(pte, ptl); - goto bad_access; - } - - mem_value = *mem; - if (mem_value == oldval) - *mem = newval; - - pte_unmap_unlock(pte, ptl); - up_read(&mm->mmap_sem); - return mem_value; - - bad_access: - up_read(&mm->mmap_sem); - /* This is not necessarily a bad access, we can get here if - a memory we're trying to write to should be copied-on-write. - Make the kernel do the necessary page stuff, then re-iterate. - Simulate a write access fault to do that. */ - { - /* The first argument of the function corresponds to - D1, which is the first field of struct pt_regs. */ - struct pt_regs *fp = (struct pt_regs *)&newval; - - /* '3' is an RMW flag. */ - if (do_page_fault(fp, (unsigned long)mem, 3)) - /* If the do_page_fault() failed, we don't - have anything meaningful to return. - There should be a SIGSEGV pending for - the process. */ - return 0xdeadbeef; - } - } -} - -asmlinkage int sys_atomic_barrier(void) -{ - /* no code needed for uniprocs */ - return 0; -} diff --git a/arch/m68k/kernel/sys_m68k_no.c b/arch/m68k/kernel/sys_m68k_no.c deleted file mode 100644 index 68488ae47f0..00000000000 --- a/arch/m68k/kernel/sys_m68k_no.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/sys_m68k.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/m68k - * platform. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/ipc.h> -#include <linux/fs.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/cachectl.h> -#include <asm/traps.h> -#include <asm/cacheflush.h> -#include <asm/unistd.h> - -/* sys_cacheflush -- flush (part of) the processor cache. */ -asmlinkage int -sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) -{ - flush_cache_all(); - return(0); -} - -asmlinkage int sys_getpagesize(void) -{ - return PAGE_SIZE; -} - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - register long __res asm ("%d0") = __NR_execve; - register long __a asm ("%d1") = (long)(filename); - register long __b asm ("%d2") = (long)(argv); - register long __c asm ("%d3") = (long)(envp); - asm volatile ("trap #0" : "+d" (__res) - : "d" (__a), "d" (__b), "d" (__c)); - return __res; -} - -asmlinkage unsigned long sys_get_thread_area(void) -{ - return current_thread_info()->tp_value; -} - -asmlinkage int sys_set_thread_area(unsigned long tp) -{ - current_thread_info()->tp_value = tp; - return 0; -} - -/* This syscall gets its arguments in A0 (mem), D2 (oldval) and - D1 (newval). */ -asmlinkage int -sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, - unsigned long __user * mem) -{ - struct mm_struct *mm = current->mm; - unsigned long mem_value; - - down_read(&mm->mmap_sem); - - mem_value = *mem; - if (mem_value == oldval) - *mem = newval; - - up_read(&mm->mmap_sem); - return mem_value; -} - -asmlinkage int sys_atomic_barrier(void) -{ - /* no code needed for uniprocs */ - return 0; -} diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S index 5909e392cb1..6f7b09122a0 100644 --- a/arch/m68k/kernel/syscalltable.S +++ b/arch/m68k/kernel/syscalltable.S @@ -11,7 +11,6 @@ * Linux/m68k support by Hamish Macdonald */ -#include <linux/sys.h> #include <linux/linkage.h> #ifndef CONFIG_MMU diff --git a/arch/m68k/lib/Makefile b/arch/m68k/lib/Makefile index 1f95881d843..df421e50143 100644 --- a/arch/m68k/lib/Makefile +++ b/arch/m68k/lib/Makefile @@ -1,5 +1,14 @@ + +# +# Makefile for m68k-specific library files.. +# + +lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ + memcpy.o memset.o memmove.o + ifdef CONFIG_MMU -include arch/m68k/lib/Makefile_mm +lib-y += string.o uaccess.o checksum_mm.o else -include arch/m68k/lib/Makefile_no +lib-y += mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o delay.o checksum_no.o endif + diff --git a/arch/m68k/lib/Makefile_mm b/arch/m68k/lib/Makefile_mm deleted file mode 100644 index af9abf8d9d9..00000000000 --- a/arch/m68k/lib/Makefile_mm +++ /dev/null @@ -1,6 +0,0 @@ -# -# Makefile for m68k-specific library files.. -# - -lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ - checksum.o string.o uaccess.o diff --git a/arch/m68k/lib/Makefile_no b/arch/m68k/lib/Makefile_no deleted file mode 100644 index 32d852e586d..00000000000 --- a/arch/m68k/lib/Makefile_no +++ /dev/null @@ -1,7 +0,0 @@ -# -# Makefile for m68knommu specific library files.. -# - -lib-y := ashldi3.o ashrdi3.o lshrdi3.o \ - muldi3.o mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o \ - checksum.o memcpy.o memmove.o memset.o delay.o diff --git a/arch/m68k/lib/checksum.c b/arch/m68k/lib/checksum.c deleted file mode 100644 index 1297536060d..00000000000 --- a/arch/m68k/lib/checksum.c +++ /dev/null @@ -1,5 +0,0 @@ -#ifdef CONFIG_MMU -#include "checksum_mm.c" -#else -#include "checksum_no.c" -#endif diff --git a/arch/m68k/lib/checksum_no.c b/arch/m68k/lib/checksum_no.c index eccf25d3d73..e4c6354da76 100644 --- a/arch/m68k/lib/checksum_no.c +++ b/arch/m68k/lib/checksum_no.c @@ -101,6 +101,7 @@ __sum16 ip_fast_csum(const void *iph, unsigned int ihl) { return (__force __sum16)~do_csum(iph,ihl*4); } +EXPORT_SYMBOL(ip_fast_csum); #endif /* @@ -140,6 +141,7 @@ csum_partial_copy_from_user(const void __user *src, void *dst, memcpy(dst, (__force const void *)src, len); return csum_partial(dst, len, sum); } +EXPORT_SYMBOL(csum_partial_copy_from_user); /* * copy from ds while checksumming, otherwise like csum_partial @@ -151,3 +153,4 @@ csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) memcpy(dst, src, len); return csum_partial(dst, len, sum); } +EXPORT_SYMBOL(csum_partial_copy_nocheck); diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c index b50dbcad474..62182c81e91 100644 --- a/arch/m68k/lib/memcpy.c +++ b/arch/m68k/lib/memcpy.c @@ -1,62 +1,80 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ -#include <linux/types.h> +#include <linux/module.h> +#include <linux/string.h> -void * memcpy(void * to, const void * from, size_t n) +void *memcpy(void *to, const void *from, size_t n) { -#ifdef CONFIG_COLDFIRE - void *xto = to; - size_t temp; + void *xto = to; + size_t temp, temp1; - if (!n) - return xto; - if ((long) to & 1) - { - char *cto = to; - const char *cfrom = from; - *cto++ = *cfrom++; - to = cto; - from = cfrom; - n--; - } - if (n > 2 && (long) to & 2) - { - short *sto = to; - const short *sfrom = from; - *sto++ = *sfrom++; - to = sto; - from = sfrom; - n -= 2; - } - temp = n >> 2; - if (temp) - { - long *lto = to; - const long *lfrom = from; - for (; temp; temp--) - *lto++ = *lfrom++; - to = lto; - from = lfrom; - } - if (n & 2) - { - short *sto = to; - const short *sfrom = from; - *sto++ = *sfrom++; - to = sto; - from = sfrom; - } - if (n & 1) - { - char *cto = to; - const char *cfrom = from; - *cto = *cfrom; - } - return xto; + if (!n) + return xto; + if ((long)to & 1) { + char *cto = to; + const char *cfrom = from; + *cto++ = *cfrom++; + to = cto; + from = cfrom; + n--; + } + if (n > 2 && (long)to & 2) { + short *sto = to; + const short *sfrom = from; + *sto++ = *sfrom++; + to = sto; + from = sfrom; + n -= 2; + } + temp = n >> 2; + if (temp) { + long *lto = to; + const long *lfrom = from; +#if defined(__mc68020__) || defined(__mc68030__) || \ + defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__) + asm volatile ( + " movel %2,%3\n" + " andw #7,%3\n" + " lsrl #3,%2\n" + " negw %3\n" + " jmp %%pc@(1f,%3:w:2)\n" + "4: movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + " movel %0@+,%1@+\n" + "1: dbra %2,4b\n" + " clrw %2\n" + " subql #1,%2\n" + " jpl 4b" + : "=a" (lfrom), "=a" (lto), "=d" (temp), "=&d" (temp1) + : "0" (lfrom), "1" (lto), "2" (temp)); #else - const char *c_from = from; - char *c_to = to; - while (n-- > 0) - *c_to++ = *c_from++; - return((void *) to); + for (; temp; temp--) + *lto++ = *lfrom++; #endif + to = lto; + from = lfrom; + } + if (n & 2) { + short *sto = to; + const short *sfrom = from; + *sto++ = *sfrom++; + to = sto; + from = sfrom; + } + if (n & 1) { + char *cto = to; + const char *cfrom = from; + *cto = *cfrom; + } + return xto; } +EXPORT_SYMBOL(memcpy); diff --git a/arch/m68k/lib/memmove.c b/arch/m68k/lib/memmove.c index b3dcfe9dab7..6519f7f349f 100644 --- a/arch/m68k/lib/memmove.c +++ b/arch/m68k/lib/memmove.c @@ -4,8 +4,6 @@ * for more details. */ -#define __IN_STRING_C - #include <linux/module.h> #include <linux/string.h> diff --git a/arch/m68k/lib/memset.c b/arch/m68k/lib/memset.c index 1389bf45563..f649e6a2e64 100644 --- a/arch/m68k/lib/memset.c +++ b/arch/m68k/lib/memset.c @@ -1,47 +1,75 @@ -#include <linux/types.h> +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ -void * memset(void * s, int c, size_t count) +#include <linux/module.h> +#include <linux/string.h> + +void *memset(void *s, int c, size_t count) { - void *xs = s; - size_t temp; + void *xs = s; + size_t temp; - if (!count) - return xs; - c &= 0xff; - c |= c << 8; - c |= c << 16; - if ((long) s & 1) - { - char *cs = s; - *cs++ = c; - s = cs; - count--; - } - if (count > 2 && (long) s & 2) - { - short *ss = s; - *ss++ = c; - s = ss; - count -= 2; - } - temp = count >> 2; - if (temp) - { - long *ls = s; - for (; temp; temp--) - *ls++ = c; - s = ls; - } - if (count & 2) - { - short *ss = s; - *ss++ = c; - s = ss; - } - if (count & 1) - { - char *cs = s; - *cs = c; - } - return xs; + if (!count) + return xs; + c &= 0xff; + c |= c << 8; + c |= c << 16; + if ((long)s & 1) { + char *cs = s; + *cs++ = c; + s = cs; + count--; + } + if (count > 2 && (long)s & 2) { + short *ss = s; + *ss++ = c; + s = ss; + count -= 2; + } + temp = count >> 2; + if (temp) { + long *ls = s; +#if defined(__mc68020__) || defined(__mc68030__) || \ + defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__) + size_t temp1; + asm volatile ( + " movel %1,%2\n" + " andw #7,%2\n" + " lsrl #3,%1\n" + " negw %2\n" + " jmp %%pc@(2f,%2:w:2)\n" + "1: movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + " movel %3,%0@+\n" + "2: dbra %1,1b\n" + " clrw %1\n" + " subql #1,%1\n" + " jpl 1b" + : "=a" (ls), "=d" (temp), "=&d" (temp1) + : "d" (c), "0" (ls), "1" (temp)); +#else + for (; temp; temp--) + *ls++ = c; +#endif + s = ls; + } + if (count & 2) { + short *ss = s; + *ss++ = c; + s = ss; + } + if (count & 1) { + char *cs = s; + *cs = c; + } + return xs; } +EXPORT_SYMBOL(memset); diff --git a/arch/m68k/lib/muldi3.c b/arch/m68k/lib/muldi3.c index 16e0eb338ee..079bafca073 100644 --- a/arch/m68k/lib/muldi3.c +++ b/arch/m68k/lib/muldi3.c @@ -1,5 +1,98 @@ -#ifdef CONFIG_MMU -#include "muldi3_mm.c" +/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and + gcc-2.7.2.3/longlong.h which is: */ +/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#if defined(__mc68020__) || defined(__mc68030__) || \ + defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__) + +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulu%.l %3,%1:%0" \ + : "=d" ((USItype)(w0)), \ + "=d" ((USItype)(w1)) \ + : "%0" ((USItype)(u)), \ + "dmi" ((USItype)(v))) + #else -#include "muldi3_no.c" + +#define SI_TYPE_SIZE 32 +#define __BITS4 (SI_TYPE_SIZE / 4) +#define __ll_B (1L << (SI_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((USItype) (t) % __ll_B) +#define __ll_highpart(t) ((USItype) (t) / __ll_B) + +#define umul_ppmm(w1, w0, u, v) \ + do { \ + USItype __x0, __x1, __x2, __x3; \ + USItype __ul, __vl, __uh, __vh; \ + \ + __ul = __ll_lowpart (u); \ + __uh = __ll_highpart (u); \ + __vl = __ll_lowpart (v); \ + __vh = __ll_highpart (v); \ + \ + __x0 = (USItype) __ul * __vl; \ + __x1 = (USItype) __ul * __vh; \ + __x2 = (USItype) __uh * __vl; \ + __x3 = (USItype) __uh * __vh; \ + \ + __x1 += __ll_highpart (__x0);/* this can't give carry */ \ + __x1 += __x2; /* but this indeed can */ \ + if (__x1 < __x2) /* did we get it? */ \ + __x3 += __ll_B; /* yes, add it in the proper pos. */ \ + \ + (w1) = __x3 + __ll_highpart (__x1); \ + (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ + } while (0) + #endif + +#define __umulsidi3(u, v) \ + ({DIunion __w; \ + umul_ppmm (__w.s.high, __w.s.low, u, v); \ + __w.ll; }) + +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef int word_type __attribute__ ((mode (__word__))); + +struct DIstruct {SItype high, low;}; + +typedef union +{ + struct DIstruct s; + DItype ll; +} DIunion; + +DItype +__muldi3 (DItype u, DItype v) +{ + DIunion w; + DIunion uu, vv; + + uu.ll = u, + vv.ll = v; + + w.ll = __umulsidi3 (uu.s.low, vv.s.low); + w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + + (USItype) uu.s.high * (USItype) vv.s.low); + + return w.ll; +} diff --git a/arch/m68k/lib/muldi3_mm.c b/arch/m68k/lib/muldi3_mm.c deleted file mode 100644 index be4f275649e..00000000000 --- a/arch/m68k/lib/muldi3_mm.c +++ /dev/null @@ -1,63 +0,0 @@ -/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and - gcc-2.7.2.3/longlong.h which is: */ -/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#define BITS_PER_UNIT 8 - -#define umul_ppmm(w1, w0, u, v) \ - __asm__ ("mulu%.l %3,%1:%0" \ - : "=d" ((USItype)(w0)), \ - "=d" ((USItype)(w1)) \ - : "%0" ((USItype)(u)), \ - "dmi" ((USItype)(v))) - -#define __umulsidi3(u, v) \ - ({DIunion __w; \ - umul_ppmm (__w.s.high, __w.s.low, u, v); \ - __w.ll; }) - -typedef int SItype __attribute__ ((mode (SI))); -typedef unsigned int USItype __attribute__ ((mode (SI))); -typedef int DItype __attribute__ ((mode (DI))); -typedef int word_type __attribute__ ((mode (__word__))); - -struct DIstruct {SItype high, low;}; - -typedef union -{ - struct DIstruct s; - DItype ll; -} DIunion; - -DItype -__muldi3 (DItype u, DItype v) -{ - DIunion w; - DIunion uu, vv; - - uu.ll = u, - vv.ll = v; - - w.ll = __umulsidi3 (uu.s.low, vv.s.low); - w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high - + (USItype) uu.s.high * (USItype) vv.s.low); - - return w.ll; -} diff --git a/arch/m68k/lib/muldi3_no.c b/arch/m68k/lib/muldi3_no.c deleted file mode 100644 index 34af72c3030..00000000000 --- a/arch/m68k/lib/muldi3_no.c +++ /dev/null @@ -1,86 +0,0 @@ -/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and - gcc-2.7.2.3/longlong.h which is: */ -/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#define BITS_PER_UNIT 8 -#define SI_TYPE_SIZE 32 - -#define __BITS4 (SI_TYPE_SIZE / 4) -#define __ll_B (1L << (SI_TYPE_SIZE / 2)) -#define __ll_lowpart(t) ((USItype) (t) % __ll_B) -#define __ll_highpart(t) ((USItype) (t) / __ll_B) - -#define umul_ppmm(w1, w0, u, v) \ - do { \ - USItype __x0, __x1, __x2, __x3; \ - USItype __ul, __vl, __uh, __vh; \ - \ - __ul = __ll_lowpart (u); \ - __uh = __ll_highpart (u); \ - __vl = __ll_lowpart (v); \ - __vh = __ll_highpart (v); \ - \ - __x0 = (USItype) __ul * __vl; \ - __x1 = (USItype) __ul * __vh; \ - __x2 = (USItype) __uh * __vl; \ - __x3 = (USItype) __uh * __vh; \ - \ - __x1 += __ll_highpart (__x0);/* this can't give carry */ \ - __x1 += __x2; /* but this indeed can */ \ - if (__x1 < __x2) /* did we get it? */ \ - __x3 += __ll_B; /* yes, add it in the proper pos. */ \ - \ - (w1) = __x3 + __ll_highpart (__x1); \ - (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ - } while (0) - -#define __umulsidi3(u, v) \ - ({DIunion __w; \ - umul_ppmm (__w.s.high, __w.s.low, u, v); \ - __w.ll; }) - -typedef int SItype __attribute__ ((mode (SI))); -typedef unsigned int USItype __attribute__ ((mode (SI))); -typedef int DItype __attribute__ ((mode (DI))); -typedef int word_type __attribute__ ((mode (__word__))); - -struct DIstruct {SItype high, low;}; - -typedef union -{ - struct DIstruct s; - DItype ll; -} DIunion; - -DItype -__muldi3 (DItype u, DItype v) -{ - DIunion w; - DIunion uu, vv; - - uu.ll = u, - vv.ll = v; - - w.ll = __umulsidi3 (uu.s.low, vv.s.low); - w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high - + (USItype) uu.s.high * (USItype) vv.s.low); - - return w.ll; -} diff --git a/arch/m68k/lib/string.c b/arch/m68k/lib/string.c index d399c5f2563..b9a57abfad0 100644 --- a/arch/m68k/lib/string.c +++ b/arch/m68k/lib/string.c @@ -20,226 +20,3 @@ char *strcat(char *dest, const char *src) return __kernel_strcpy(dest + __kernel_strlen(dest), src); } EXPORT_SYMBOL(strcat); - -void *memset(void *s, int c, size_t count) -{ - void *xs = s; - size_t temp, temp1; - - if (!count) - return xs; - c &= 0xff; - c |= c << 8; - c |= c << 16; - if ((long)s & 1) { - char *cs = s; - *cs++ = c; - s = cs; - count--; - } - if (count > 2 && (long)s & 2) { - short *ss = s; - *ss++ = c; - s = ss; - count -= 2; - } - temp = count >> 2; - if (temp) { - long *ls = s; - - asm volatile ( - " movel %1,%2\n" - " andw #7,%2\n" - " lsrl #3,%1\n" - " negw %2\n" - " jmp %%pc@(2f,%2:w:2)\n" - "1: movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - " movel %3,%0@+\n" - "2: dbra %1,1b\n" - " clrw %1\n" - " subql #1,%1\n" - " jpl 1b" - : "=a" (ls), "=d" (temp), "=&d" (temp1) - : "d" (c), "0" (ls), "1" (temp)); - s = ls; - } - if (count & 2) { - short *ss = s; - *ss++ = c; - s = ss; - } - if (count & 1) { - char *cs = s; - *cs = c; - } - return xs; -} -EXPORT_SYMBOL(memset); - -void *memcpy(void *to, const void *from, size_t n) -{ - void *xto = to; - size_t temp, temp1; - - if (!n) - return xto; - if ((long)to & 1) { - char *cto = to; - const char *cfrom = from; - *cto++ = *cfrom++; - to = cto; - from = cfrom; - n--; - } - if (n > 2 && (long)to & 2) { - short *sto = to; - const short *sfrom = from; - *sto++ = *sfrom++; - to = sto; - from = sfrom; - n -= 2; - } - temp = n >> 2; - if (temp) { - long *lto = to; - const long *lfrom = from; - - asm volatile ( - " movel %2,%3\n" - " andw #7,%3\n" - " lsrl #3,%2\n" - " negw %3\n" - " jmp %%pc@(1f,%3:w:2)\n" - "4: movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - " movel %0@+,%1@+\n" - "1: dbra %2,4b\n" - " clrw %2\n" - " subql #1,%2\n" - " jpl 4b" - : "=a" (lfrom), "=a" (lto), "=d" (temp), "=&d" (temp1) - : "0" (lfrom), "1" (lto), "2" (temp)); - to = lto; - from = lfrom; - } - if (n & 2) { - short *sto = to; - const short *sfrom = from; - *sto++ = *sfrom++; - to = sto; - from = sfrom; - } - if (n & 1) { - char *cto = to; - const char *cfrom = from; - *cto = *cfrom; - } - return xto; -} -EXPORT_SYMBOL(memcpy); - -void *memmove(void *dest, const void *src, size_t n) -{ - void *xdest = dest; - size_t temp; - - if (!n) - return xdest; - - if (dest < src) { - if ((long)dest & 1) { - char *cdest = dest; - const char *csrc = src; - *cdest++ = *csrc++; - dest = cdest; - src = csrc; - n--; - } - if (n > 2 && (long)dest & 2) { - short *sdest = dest; - const short *ssrc = src; - *sdest++ = *ssrc++; - dest = sdest; - src = ssrc; - n -= 2; - } - temp = n >> 2; - if (temp) { - long *ldest = dest; - const long *lsrc = src; - temp--; - do - *ldest++ = *lsrc++; - while (temp--); - dest = ldest; - src = lsrc; - } - if (n & 2) { - short *sdest = dest; - const short *ssrc = src; - *sdest++ = *ssrc++; - dest = sdest; - src = ssrc; - } - if (n & 1) { - char *cdest = dest; - const char *csrc = src; - *cdest = *csrc; - } - } else { - dest = (char *)dest + n; - src = (const char *)src + n; - if ((long)dest & 1) { - char *cdest = dest; - const char *csrc = src; - *--cdest = *--csrc; - dest = cdest; - src = csrc; - n--; - } - if (n > 2 && (long)dest & 2) { - short *sdest = dest; - const short *ssrc = src; - *--sdest = *--ssrc; - dest = sdest; - src = ssrc; - n -= 2; - } - temp = n >> 2; - if (temp) { - long *ldest = dest; - const long *lsrc = src; - temp--; - do - *--ldest = *--lsrc; - while (temp--); - dest = ldest; - src = lsrc; - } - if (n & 2) { - short *sdest = dest; - const short *ssrc = src; - *--sdest = *--ssrc; - dest = sdest; - src = ssrc; - } - if (n & 1) { - char *cdest = dest; - const char *csrc = src; - *--cdest = *--csrc; - } - } - return xdest; -} -EXPORT_SYMBOL(memmove); diff --git a/arch/m68k/mm/Makefile b/arch/m68k/mm/Makefile index b60270e4954..09cadf1058d 100644 --- a/arch/m68k/mm/Makefile +++ b/arch/m68k/mm/Makefile @@ -1,5 +1,9 @@ -ifdef CONFIG_MMU -include arch/m68k/mm/Makefile_mm -else -include arch/m68k/mm/Makefile_no -endif +# +# Makefile for the linux m68k-specific parts of the memory manager. +# + +obj-y := init.o + +obj-$(CONFIG_MMU) += cache.o fault.o hwtest.o +obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o +obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o diff --git a/arch/m68k/mm/Makefile_mm b/arch/m68k/mm/Makefile_mm deleted file mode 100644 index 5eaa43c4cb3..00000000000 --- a/arch/m68k/mm/Makefile_mm +++ /dev/null @@ -1,8 +0,0 @@ -# -# Makefile for the linux m68k-specific parts of the memory manager. -# - -obj-y := cache.o init.o fault.o hwtest.o - -obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o -obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o diff --git a/arch/m68k/mm/Makefile_no b/arch/m68k/mm/Makefile_no deleted file mode 100644 index b54ab6b4b52..00000000000 --- a/arch/m68k/mm/Makefile_no +++ /dev/null @@ -1,5 +0,0 @@ -# -# Makefile for the linux m68knommu specific parts of the memory manager. -# - -obj-y += init.o kmap.o diff --git a/arch/m68k/mm/init_no.c b/arch/m68k/mm/init_no.c index 8a6653f56bd..7cbd7bd1f8b 100644 --- a/arch/m68k/mm/init_no.c +++ b/arch/m68k/mm/init_no.c @@ -38,28 +38,10 @@ #include <asm/system.h> #include <asm/machdep.h> -#undef DEBUG - -extern void die_if_kernel(char *,struct pt_regs *,long); -extern void free_initmem(void); - /* - * BAD_PAGE is the page that is used for page faults when linux - * is out-of-memory. Older versions of linux just did a - * do_exit(), but using this instead means there is less risk - * for a process dying in kernel mode, possibly leaving a inode - * unused etc.. - * - * BAD_PAGETABLE is the accompanying page-table: it is initialized - * to point to BAD_PAGE entries. - * * ZERO_PAGE is a special page that is used for zero-initialized * data and COW. */ -static unsigned long empty_bad_page_table; - -static unsigned long empty_bad_page; - unsigned long empty_zero_page; extern unsigned long memory_start; @@ -77,22 +59,9 @@ void __init paging_init(void) * Make sure start_mem is page aligned, otherwise bootmem and * page_alloc get different views of the world. */ -#ifdef DEBUG - unsigned long start_mem = PAGE_ALIGN(memory_start); -#endif unsigned long end_mem = memory_end & PAGE_MASK; + unsigned long zones_size[MAX_NR_ZONES] = {0, }; -#ifdef DEBUG - printk (KERN_DEBUG "start_mem is %#lx\nvirtual_end is %#lx\n", - start_mem, end_mem); -#endif - - /* - * Initialize the bad page table and bad page to point - * to a couple of allocated pages. - */ - empty_bad_page_table = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); - empty_bad_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); memset((void *)empty_zero_page, 0, PAGE_SIZE); @@ -101,19 +70,8 @@ void __init paging_init(void) */ set_fs (USER_DS); -#ifdef DEBUG - printk (KERN_DEBUG "before free_area_init\n"); - - printk (KERN_DEBUG "free_area_init -> start_mem is %#lx\nvirtual_end is %#lx\n", - start_mem, end_mem); -#endif - - { - unsigned long zones_size[MAX_NR_ZONES] = {0, }; - - zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; - free_area_init(zones_size); - } + zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; + free_area_init(zones_size); } void __init mem_init(void) @@ -166,8 +124,7 @@ void free_initrd_mem(unsigned long start, unsigned long end) } #endif -void -free_initmem() +void free_initmem(void) { #ifdef CONFIG_RAMKERNEL unsigned long addr; diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c index a373d136b2b..69345849454 100644 --- a/arch/m68k/mm/kmap.c +++ b/arch/m68k/mm/kmap.c @@ -1,5 +1,367 @@ -#ifdef CONFIG_MMU -#include "kmap_mm.c" +/* + * linux/arch/m68k/mm/kmap.c + * + * Copyright (C) 1997 Roman Hodek + * + * 10/01/99 cleaned up the code and changing to the same interface + * used by other architectures /Roman Zippel + */ + +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/io.h> +#include <asm/system.h> + +#undef DEBUG + +#define PTRTREESIZE (256*1024) + +/* + * For 040/060 we can use the virtual memory area like other architectures, + * but for 020/030 we want to use early termination page descriptor and we + * can't mix this with normal page descriptors, so we have to copy that code + * (mm/vmalloc.c) and return appriorate aligned addresses. + */ + +#ifdef CPU_M68040_OR_M68060_ONLY + +#define IO_SIZE PAGE_SIZE + +static inline struct vm_struct *get_io_area(unsigned long size) +{ + return get_vm_area(size, VM_IOREMAP); +} + + +static inline void free_io_area(void *addr) +{ + vfree((void *)(PAGE_MASK & (unsigned long)addr)); +} + #else -#include "kmap_no.c" + +#define IO_SIZE (256*1024) + +static struct vm_struct *iolist; + +static struct vm_struct *get_io_area(unsigned long size) +{ + unsigned long addr; + struct vm_struct **p, *tmp, *area; + + area = kmalloc(sizeof(*area), GFP_KERNEL); + if (!area) + return NULL; + addr = KMAP_START; + for (p = &iolist; (tmp = *p) ; p = &tmp->next) { + if (size + addr < (unsigned long)tmp->addr) + break; + if (addr > KMAP_END-size) { + kfree(area); + return NULL; + } + addr = tmp->size + (unsigned long)tmp->addr; + } + area->addr = (void *)addr; + area->size = size + IO_SIZE; + area->next = *p; + *p = area; + return area; +} + +static inline void free_io_area(void *addr) +{ + struct vm_struct **p, *tmp; + + if (!addr) + return; + addr = (void *)((unsigned long)addr & -IO_SIZE); + for (p = &iolist ; (tmp = *p) ; p = &tmp->next) { + if (tmp->addr == addr) { + *p = tmp->next; + __iounmap(tmp->addr, tmp->size); + kfree(tmp); + return; + } + } +} + #endif + +/* + * Map some physical address range into the kernel address space. + */ +/* Rewritten by Andreas Schwab to remove all races. */ + +void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) +{ + struct vm_struct *area; + unsigned long virtaddr, retaddr; + long offset; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + /* + * Don't allow mappings that wrap.. + */ + if (!size || physaddr > (unsigned long)(-size)) + return NULL; + +#ifdef CONFIG_AMIGA + if (MACH_IS_AMIGA) { + if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000) + && (cacheflag == IOMAP_NOCACHE_SER)) + return (void __iomem *)physaddr; + } +#endif + +#ifdef DEBUG + printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag); +#endif + /* + * Mappings have to be aligned + */ + offset = physaddr & (IO_SIZE - 1); + physaddr &= -IO_SIZE; + size = (size + offset + IO_SIZE - 1) & -IO_SIZE; + + /* + * Ok, go for it.. + */ + area = get_io_area(size); + if (!area) + return NULL; + + virtaddr = (unsigned long)area->addr; + retaddr = virtaddr + offset; +#ifdef DEBUG + printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr); +#endif + + /* + * add cache and table flags to physical address + */ + if (CPU_IS_040_OR_060) { + physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 | + _PAGE_ACCESSED | _PAGE_DIRTY); + switch (cacheflag) { + case IOMAP_FULL_CACHING: + physaddr |= _PAGE_CACHE040; + break; + case IOMAP_NOCACHE_SER: + default: + physaddr |= _PAGE_NOCACHE_S; + break; + case IOMAP_NOCACHE_NONSER: + physaddr |= _PAGE_NOCACHE; + break; + case IOMAP_WRITETHROUGH: + physaddr |= _PAGE_CACHE040W; + break; + } + } else { + physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); + switch (cacheflag) { + case IOMAP_NOCACHE_SER: + case IOMAP_NOCACHE_NONSER: + default: + physaddr |= _PAGE_NOCACHE030; + break; + case IOMAP_FULL_CACHING: + case IOMAP_WRITETHROUGH: + break; + } + } + + while ((long)size > 0) { +#ifdef DEBUG + if (!(virtaddr & (PTRTREESIZE-1))) + printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr); +#endif + pgd_dir = pgd_offset_k(virtaddr); + pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr); + if (!pmd_dir) { + printk("ioremap: no mem for pmd_dir\n"); + return NULL; + } + + if (CPU_IS_020_OR_030) { + pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr; + physaddr += PTRTREESIZE; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + } else { + pte_dir = pte_alloc_kernel(pmd_dir, virtaddr); + if (!pte_dir) { + printk("ioremap: no mem for pte_dir\n"); + return NULL; + } + + pte_val(*pte_dir) = physaddr; + virtaddr += PAGE_SIZE; + physaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + } +#ifdef DEBUG + printk("\n"); +#endif + flush_tlb_all(); + + return (void __iomem *)retaddr; +} +EXPORT_SYMBOL(__ioremap); + +/* + * Unmap a ioremap()ed region again + */ +void iounmap(void __iomem *addr) +{ +#ifdef CONFIG_AMIGA + if ((!MACH_IS_AMIGA) || + (((unsigned long)addr < 0x40000000) || + ((unsigned long)addr > 0x60000000))) + free_io_area((__force void *)addr); +#else + free_io_area((__force void *)addr); +#endif +} +EXPORT_SYMBOL(iounmap); + +/* + * __iounmap unmaps nearly everything, so be careful + * it doesn't free currently pointer/page tables anymore but it + * wans't used anyway and might be added later. + */ +void __iounmap(void *addr, unsigned long size) +{ + unsigned long virtaddr = (unsigned long)addr; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + while ((long)size > 0) { + pgd_dir = pgd_offset_k(virtaddr); + if (pgd_bad(*pgd_dir)) { + printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); + pgd_clear(pgd_dir); + return; + } + pmd_dir = pmd_offset(pgd_dir, virtaddr); + + if (CPU_IS_020_OR_030) { + int pmd_off = (virtaddr/PTRTREESIZE) & 15; + int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK; + + if (pmd_type == _PAGE_PRESENT) { + pmd_dir->pmd[pmd_off] = 0; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + continue; + } else if (pmd_type == 0) + continue; + } + + if (pmd_bad(*pmd_dir)) { + printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); + pmd_clear(pmd_dir); + return; + } + pte_dir = pte_offset_kernel(pmd_dir, virtaddr); + + pte_val(*pte_dir) = 0; + virtaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + flush_tlb_all(); +} + +/* + * Set new cache mode for some kernel address space. + * The caller must push data for that range itself, if such data may already + * be in the cache. + */ +void kernel_set_cachemode(void *addr, unsigned long size, int cmode) +{ + unsigned long virtaddr = (unsigned long)addr; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + if (CPU_IS_040_OR_060) { + switch (cmode) { + case IOMAP_FULL_CACHING: + cmode = _PAGE_CACHE040; + break; + case IOMAP_NOCACHE_SER: + default: + cmode = _PAGE_NOCACHE_S; + break; + case IOMAP_NOCACHE_NONSER: + cmode = _PAGE_NOCACHE; + break; + case IOMAP_WRITETHROUGH: + cmode = _PAGE_CACHE040W; + break; + } + } else { + switch (cmode) { + case IOMAP_NOCACHE_SER: + case IOMAP_NOCACHE_NONSER: + default: + cmode = _PAGE_NOCACHE030; + break; + case IOMAP_FULL_CACHING: + case IOMAP_WRITETHROUGH: + cmode = 0; + } + } + + while ((long)size > 0) { + pgd_dir = pgd_offset_k(virtaddr); + if (pgd_bad(*pgd_dir)) { + printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); + pgd_clear(pgd_dir); + return; + } + pmd_dir = pmd_offset(pgd_dir, virtaddr); + + if (CPU_IS_020_OR_030) { + int pmd_off = (virtaddr/PTRTREESIZE) & 15; + + if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) { + pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] & + _CACHEMASK040) | cmode; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + continue; + } + } + + if (pmd_bad(*pmd_dir)) { + printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); + pmd_clear(pmd_dir); + return; + } + pte_dir = pte_offset_kernel(pmd_dir, virtaddr); + + pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode; + virtaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + flush_tlb_all(); +} +EXPORT_SYMBOL(kernel_set_cachemode); diff --git a/arch/m68k/mm/kmap_mm.c b/arch/m68k/mm/kmap_mm.c deleted file mode 100644 index 69345849454..00000000000 --- a/arch/m68k/mm/kmap_mm.c +++ /dev/null @@ -1,367 +0,0 @@ -/* - * linux/arch/m68k/mm/kmap.c - * - * Copyright (C) 1997 Roman Hodek - * - * 10/01/99 cleaned up the code and changing to the same interface - * used by other architectures /Roman Zippel - */ - -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> - -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/io.h> -#include <asm/system.h> - -#undef DEBUG - -#define PTRTREESIZE (256*1024) - -/* - * For 040/060 we can use the virtual memory area like other architectures, - * but for 020/030 we want to use early termination page descriptor and we - * can't mix this with normal page descriptors, so we have to copy that code - * (mm/vmalloc.c) and return appriorate aligned addresses. - */ - -#ifdef CPU_M68040_OR_M68060_ONLY - -#define IO_SIZE PAGE_SIZE - -static inline struct vm_struct *get_io_area(unsigned long size) -{ - return get_vm_area(size, VM_IOREMAP); -} - - -static inline void free_io_area(void *addr) -{ - vfree((void *)(PAGE_MASK & (unsigned long)addr)); -} - -#else - -#define IO_SIZE (256*1024) - -static struct vm_struct *iolist; - -static struct vm_struct *get_io_area(unsigned long size) -{ - unsigned long addr; - struct vm_struct **p, *tmp, *area; - - area = kmalloc(sizeof(*area), GFP_KERNEL); - if (!area) - return NULL; - addr = KMAP_START; - for (p = &iolist; (tmp = *p) ; p = &tmp->next) { - if (size + addr < (unsigned long)tmp->addr) - break; - if (addr > KMAP_END-size) { - kfree(area); - return NULL; - } - addr = tmp->size + (unsigned long)tmp->addr; - } - area->addr = (void *)addr; - area->size = size + IO_SIZE; - area->next = *p; - *p = area; - return area; -} - -static inline void free_io_area(void *addr) -{ - struct vm_struct **p, *tmp; - - if (!addr) - return; - addr = (void *)((unsigned long)addr & -IO_SIZE); - for (p = &iolist ; (tmp = *p) ; p = &tmp->next) { - if (tmp->addr == addr) { - *p = tmp->next; - __iounmap(tmp->addr, tmp->size); - kfree(tmp); - return; - } - } -} - -#endif - -/* - * Map some physical address range into the kernel address space. - */ -/* Rewritten by Andreas Schwab to remove all races. */ - -void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) -{ - struct vm_struct *area; - unsigned long virtaddr, retaddr; - long offset; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - /* - * Don't allow mappings that wrap.. - */ - if (!size || physaddr > (unsigned long)(-size)) - return NULL; - -#ifdef CONFIG_AMIGA - if (MACH_IS_AMIGA) { - if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000) - && (cacheflag == IOMAP_NOCACHE_SER)) - return (void __iomem *)physaddr; - } -#endif - -#ifdef DEBUG - printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag); -#endif - /* - * Mappings have to be aligned - */ - offset = physaddr & (IO_SIZE - 1); - physaddr &= -IO_SIZE; - size = (size + offset + IO_SIZE - 1) & -IO_SIZE; - - /* - * Ok, go for it.. - */ - area = get_io_area(size); - if (!area) - return NULL; - - virtaddr = (unsigned long)area->addr; - retaddr = virtaddr + offset; -#ifdef DEBUG - printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr); -#endif - - /* - * add cache and table flags to physical address - */ - if (CPU_IS_040_OR_060) { - physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 | - _PAGE_ACCESSED | _PAGE_DIRTY); - switch (cacheflag) { - case IOMAP_FULL_CACHING: - physaddr |= _PAGE_CACHE040; - break; - case IOMAP_NOCACHE_SER: - default: - physaddr |= _PAGE_NOCACHE_S; - break; - case IOMAP_NOCACHE_NONSER: - physaddr |= _PAGE_NOCACHE; - break; - case IOMAP_WRITETHROUGH: - physaddr |= _PAGE_CACHE040W; - break; - } - } else { - physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); - switch (cacheflag) { - case IOMAP_NOCACHE_SER: - case IOMAP_NOCACHE_NONSER: - default: - physaddr |= _PAGE_NOCACHE030; - break; - case IOMAP_FULL_CACHING: - case IOMAP_WRITETHROUGH: - break; - } - } - - while ((long)size > 0) { -#ifdef DEBUG - if (!(virtaddr & (PTRTREESIZE-1))) - printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr); -#endif - pgd_dir = pgd_offset_k(virtaddr); - pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr); - if (!pmd_dir) { - printk("ioremap: no mem for pmd_dir\n"); - return NULL; - } - - if (CPU_IS_020_OR_030) { - pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr; - physaddr += PTRTREESIZE; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - } else { - pte_dir = pte_alloc_kernel(pmd_dir, virtaddr); - if (!pte_dir) { - printk("ioremap: no mem for pte_dir\n"); - return NULL; - } - - pte_val(*pte_dir) = physaddr; - virtaddr += PAGE_SIZE; - physaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - } -#ifdef DEBUG - printk("\n"); -#endif - flush_tlb_all(); - - return (void __iomem *)retaddr; -} -EXPORT_SYMBOL(__ioremap); - -/* - * Unmap a ioremap()ed region again - */ -void iounmap(void __iomem *addr) -{ -#ifdef CONFIG_AMIGA - if ((!MACH_IS_AMIGA) || - (((unsigned long)addr < 0x40000000) || - ((unsigned long)addr > 0x60000000))) - free_io_area((__force void *)addr); -#else - free_io_area((__force void *)addr); -#endif -} -EXPORT_SYMBOL(iounmap); - -/* - * __iounmap unmaps nearly everything, so be careful - * it doesn't free currently pointer/page tables anymore but it - * wans't used anyway and might be added later. - */ -void __iounmap(void *addr, unsigned long size) -{ - unsigned long virtaddr = (unsigned long)addr; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - while ((long)size > 0) { - pgd_dir = pgd_offset_k(virtaddr); - if (pgd_bad(*pgd_dir)) { - printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); - pgd_clear(pgd_dir); - return; - } - pmd_dir = pmd_offset(pgd_dir, virtaddr); - - if (CPU_IS_020_OR_030) { - int pmd_off = (virtaddr/PTRTREESIZE) & 15; - int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK; - - if (pmd_type == _PAGE_PRESENT) { - pmd_dir->pmd[pmd_off] = 0; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - continue; - } else if (pmd_type == 0) - continue; - } - - if (pmd_bad(*pmd_dir)) { - printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); - pmd_clear(pmd_dir); - return; - } - pte_dir = pte_offset_kernel(pmd_dir, virtaddr); - - pte_val(*pte_dir) = 0; - virtaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - flush_tlb_all(); -} - -/* - * Set new cache mode for some kernel address space. - * The caller must push data for that range itself, if such data may already - * be in the cache. - */ -void kernel_set_cachemode(void *addr, unsigned long size, int cmode) -{ - unsigned long virtaddr = (unsigned long)addr; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - if (CPU_IS_040_OR_060) { - switch (cmode) { - case IOMAP_FULL_CACHING: - cmode = _PAGE_CACHE040; - break; - case IOMAP_NOCACHE_SER: - default: - cmode = _PAGE_NOCACHE_S; - break; - case IOMAP_NOCACHE_NONSER: - cmode = _PAGE_NOCACHE; - break; - case IOMAP_WRITETHROUGH: - cmode = _PAGE_CACHE040W; - break; - } - } else { - switch (cmode) { - case IOMAP_NOCACHE_SER: - case IOMAP_NOCACHE_NONSER: - default: - cmode = _PAGE_NOCACHE030; - break; - case IOMAP_FULL_CACHING: - case IOMAP_WRITETHROUGH: - cmode = 0; - } - } - - while ((long)size > 0) { - pgd_dir = pgd_offset_k(virtaddr); - if (pgd_bad(*pgd_dir)) { - printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); - pgd_clear(pgd_dir); - return; - } - pmd_dir = pmd_offset(pgd_dir, virtaddr); - - if (CPU_IS_020_OR_030) { - int pmd_off = (virtaddr/PTRTREESIZE) & 15; - - if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) { - pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] & - _CACHEMASK040) | cmode; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - continue; - } - } - - if (pmd_bad(*pmd_dir)) { - printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); - pmd_clear(pmd_dir); - return; - } - pte_dir = pte_offset_kernel(pmd_dir, virtaddr); - - pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode; - virtaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - flush_tlb_all(); -} -EXPORT_SYMBOL(kernel_set_cachemode); diff --git a/arch/m68k/mm/kmap_no.c b/arch/m68k/mm/kmap_no.c deleted file mode 100644 index ece8d5ad4e6..00000000000 --- a/arch/m68k/mm/kmap_no.c +++ /dev/null @@ -1,45 +0,0 @@ -/* - * linux/arch/m68knommu/mm/kmap.c - * - * Copyright (C) 2000 Lineo, <davidm@snapgear.com> - * Copyright (C) 2000-2002 David McCullough <davidm@snapgear.com> - */ - -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/vmalloc.h> - -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/io.h> -#include <asm/system.h> - -#undef DEBUG - -/* - * Map some physical address range into the kernel address space. - */ -void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) -{ - return (void *)physaddr; -} - -/* - * Unmap a ioremap()ed region again. - */ -void iounmap(void *addr) -{ -} - -/* - * Set new cache mode for some kernel address space. - * The caller must push data for that range itself, if such data may already - * be in the cache. - */ -void kernel_set_cachemode(void *addr, unsigned long size, int cmode) -{ -} diff --git a/arch/m68k/platform/68328/entry.S b/arch/m68k/platform/68328/entry.S index 676960cf022..f68dce766c0 100644 --- a/arch/m68k/platform/68328/entry.S +++ b/arch/m68k/platform/68328/entry.S @@ -10,7 +10,6 @@ * Linux/m68k support by Hamish Macdonald */ -#include <linux/sys.h> #include <linux/linkage.h> #include <asm/thread_info.h> #include <asm/unistd.h> @@ -80,7 +79,7 @@ ENTRY(system_call) movel %sp,%d1 /* get thread_info pointer */ andl #-THREAD_SIZE,%d1 movel %d1,%a2 - btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + btst #(TIF_SYSCALL_TRACE%8),%a2@(TINFO_FLAGS+(31-TIF_SYSCALL_TRACE)/8) jne do_trace cmpl #NR_syscalls,%d0 jcc badsys @@ -107,12 +106,12 @@ Luser_return: andl #-THREAD_SIZE,%d1 movel %d1,%a2 1: - move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + move %a2@(TINFO_FLAGS),%d1 /* thread_info->flags */ jne Lwork_to_do RESTORE_ALL Lwork_to_do: - movel %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + movel %a2@(TINFO_FLAGS),%d1 /* thread_info->flags */ btst #TIF_NEED_RESCHED,%d1 jne reschedule diff --git a/arch/m68k/platform/68360/entry.S b/arch/m68k/platform/68360/entry.S index 46c1b18c9dc..a07b14feed9 100644 --- a/arch/m68k/platform/68360/entry.S +++ b/arch/m68k/platform/68360/entry.S @@ -12,7 +12,6 @@ * M68360 Port by SED Systems, and Lineo. */ -#include <linux/sys.h> #include <linux/linkage.h> #include <asm/thread_info.h> #include <asm/unistd.h> @@ -76,7 +75,7 @@ ENTRY(system_call) movel %sp,%d1 /* get thread_info pointer */ andl #-THREAD_SIZE,%d1 movel %d1,%a2 - btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + btst #(TIF_SYSCALL_TRACE%8),%a2@(TINFO_FLAGS+(31-TIF_SYSCALL_TRACE)/8) jne do_trace cmpl #NR_syscalls,%d0 jcc badsys @@ -103,12 +102,12 @@ Luser_return: andl #-THREAD_SIZE,%d1 movel %d1,%a2 1: - move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + move %a2@(TINFO_FLAGS),%d1 /* thread_info->flags */ jne Lwork_to_do RESTORE_ALL Lwork_to_do: - movel %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + movel %a2@(TINFO_FLAGS),%d1 /* thread_info->flags */ btst #TIF_NEED_RESCHED,%d1 jne reschedule diff --git a/arch/m68k/platform/coldfire/dma.c b/arch/m68k/platform/coldfire/dma.c index e88b95e2cc6..df5ce20d181 100644 --- a/arch/m68k/platform/coldfire/dma.c +++ b/arch/m68k/platform/coldfire/dma.c @@ -9,6 +9,7 @@ /***************************************************************************/ #include <linux/kernel.h> +#include <linux/module.h> #include <asm/dma.h> #include <asm/coldfire.h> #include <asm/mcfsim.h> @@ -33,7 +34,9 @@ unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { MCFDMA_BASE3, #endif }; +EXPORT_SYMBOL(dma_base_addr); unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; +EXPORT_SYMBOL(dma_device_address); /***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/entry.S b/arch/m68k/platform/coldfire/entry.S index eab63f09965..27c2b001161 100644 --- a/arch/m68k/platform/coldfire/entry.S +++ b/arch/m68k/platform/coldfire/entry.S @@ -26,7 +26,6 @@ * Bug, speed and maintainability fixes by Philippe De Muyter <phdm@macqel.be> */ -#include <linux/sys.h> #include <linux/linkage.h> #include <asm/unistd.h> #include <asm/thread_info.h> @@ -78,7 +77,7 @@ ENTRY(system_call) movel %d2,%a0 movel %a0@,%a1 /* save top of frame */ movel %sp,%a1@(TASK_THREAD+THREAD_ESP0) - btst #(TIF_SYSCALL_TRACE%8),%a0@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + btst #(TIF_SYSCALL_TRACE%8),%a0@(TINFO_FLAGS+(31-TIF_SYSCALL_TRACE)/8) bnes 1f movel %d3,%a0 @@ -113,11 +112,11 @@ ret_from_exception: movel %sp,%d1 /* get thread_info pointer */ andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ movel %d1,%a0 - movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + movel %a0@(TINFO_FLAGS),%d1 /* get thread_info->flags */ andl #(1<<TIF_NEED_RESCHED),%d1 jeq Lkernel_return - movel %a0@(TI_PREEMPTCOUNT),%d1 + movel %a0@(TINFO_PREEMPT),%d1 cmpl #0,%d1 jne Lkernel_return @@ -137,14 +136,14 @@ Luser_return: movel %sp,%d1 /* get thread_info pointer */ andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ movel %d1,%a0 - movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + movel %a0@(TINFO_FLAGS),%d1 /* get thread_info->flags */ jne Lwork_to_do /* still work to do */ Lreturn: RESTORE_USER Lwork_to_do: - movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + movel %a0@(TINFO_FLAGS),%d1 /* get thread_info->flags */ move #0x2000,%sr /* enable intrs again */ btst #TIF_NEED_RESCHED,%d1 jne reschedule diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S index 6ae91a49918..c33483824a2 100644 --- a/arch/m68k/platform/coldfire/head.S +++ b/arch/m68k/platform/coldfire/head.S @@ -8,7 +8,6 @@ /*****************************************************************************/ -#include <linux/sys.h> #include <linux/linkage.h> #include <linux/init.h> #include <asm/asm-offsets.h> diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 01af3876cf9..a81176f44c7 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -118,7 +118,7 @@ SECTIONS EXIT_DATA } - PERCPU(1 << CONFIG_MIPS_L1_CACHE_SHIFT, PAGE_SIZE) + PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/mn10300/kernel/vmlinux.lds.S b/arch/mn10300/kernel/vmlinux.lds.S index 968bcd2cb02..6f702a6ab39 100644 --- a/arch/mn10300/kernel/vmlinux.lds.S +++ b/arch/mn10300/kernel/vmlinux.lds.S @@ -70,7 +70,7 @@ SECTIONS .exit.text : { EXIT_TEXT; } .exit.data : { EXIT_DATA; } - PERCPU(32, PAGE_SIZE) + PERCPU_SECTION(32) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index e1a55849bfa..fa6f2b8163e 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -149,7 +149,7 @@ SECTIONS EXIT_DATA } - PERCPU(L1_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index b9150f07d26..920276c0f6a 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -160,7 +160,7 @@ SECTIONS INIT_RAM_FS } - PERCPU(L1_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) . = ALIGN(8); .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 4a7f14079e0..ff2d2371b2e 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -230,17 +230,6 @@ config SYSVIPC_COMPAT config AUDIT_ARCH def_bool y -config S390_EXEC_PROTECT - def_bool y - prompt "Data execute protection" - help - This option allows to enable a buffer overflow protection for user - space programs and it also selects the addressing mode option above. - The kernel parameter noexec=on will enable this feature and also - switch the addressing modes, default is disabled. Enabling this (via - kernel parameter) on machines earlier than IBM System z9 this will - reduce system performance. - comment "Code generation options" choice diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index 5c91995b74e..24bff4f1cc5 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -130,9 +130,7 @@ static void appldata_work_fn(struct work_struct *work) { struct list_head *lh; struct appldata_ops *ops; - int i; - i = 0; get_online_cpus(); mutex_lock(&appldata_ops_mutex); list_for_each(lh, &appldata_ops_list) { diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h index 7488e52efa9..81d7908416c 100644 --- a/arch/s390/include/asm/cmpxchg.h +++ b/arch/s390/include/asm/cmpxchg.h @@ -167,7 +167,6 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old, #ifdef CONFIG_64BIT #define cmpxchg64(ptr, o, n) \ ({ \ - BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ cmpxchg((ptr), (o), (n)); \ }) #else /* CONFIG_64BIT */ diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 10c029cfcc7..64b61bf72e9 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -196,18 +196,6 @@ do { \ } while (0) #endif /* __s390x__ */ -/* - * An executable for which elf_read_implies_exec() returns TRUE will - * have the READ_IMPLIES_EXEC personality flag set automatically. - */ -#define elf_read_implies_exec(ex, executable_stack) \ -({ \ - if (current->mm->context.noexec && \ - executable_stack != EXSTACK_DISABLE_X) \ - disable_noexec(current->mm, current); \ - current->mm->context.noexec == 0; \ -}) - #define STACK_RND_MASK 0x7ffUL #define ARCH_DLINFO \ diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index b56403c2df2..799ed0f1643 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -111,21 +111,10 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm, { pmd_t *pmdp = (pmd_t *) ptep; - if (!MACHINE_HAS_IDTE) { - __pmd_csp(pmdp); - if (mm->context.noexec) { - pmdp = get_shadow_table(pmdp); - __pmd_csp(pmdp); - } - return; - } - - __pmd_idte(address, pmdp); - if (mm->context.noexec) { - pmdp = get_shadow_table(pmdp); + if (MACHINE_HAS_IDTE) __pmd_idte(address, pmdp); - } - return; + else + __pmd_csp(pmdp); } #define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \ diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index db14a311f1d..1544b90bd6d 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -15,6 +15,7 @@ enum interruption_class { EXTINT_VRT, EXTINT_SCP, EXTINT_IUC, + EXTINT_CPM, IOINT_QAI, IOINT_QDI, IOINT_DAS, diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 65e172f8209..228cf0b295d 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -124,7 +124,7 @@ struct _lowcore { /* Address space pointer. */ __u32 kernel_asce; /* 0x02ac */ __u32 user_asce; /* 0x02b0 */ - __u32 user_exec_asce; /* 0x02b4 */ + __u32 current_pid; /* 0x02b4 */ /* SMP info area */ __u32 cpu_nr; /* 0x02b8 */ @@ -255,7 +255,7 @@ struct _lowcore { /* Address space pointer. */ __u64 kernel_asce; /* 0x0310 */ __u64 user_asce; /* 0x0318 */ - __u64 user_exec_asce; /* 0x0320 */ + __u64 current_pid; /* 0x0320 */ /* SMP info area */ __u32 cpu_nr; /* 0x0328 */ diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index 78522cdefdd..82d0847896a 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -5,19 +5,18 @@ typedef struct { atomic_t attach_count; unsigned int flush_mm; spinlock_t list_lock; - struct list_head crst_list; struct list_head pgtable_list; unsigned long asce_bits; unsigned long asce_limit; unsigned long vdso_base; - int noexec; - int has_pgste; /* The mmu context has extended page tables */ - int alloc_pgste; /* cloned contexts will have extended page tables */ + /* Cloned contexts will be created with extended page tables. */ + unsigned int alloc_pgste:1; + /* The mmu context has extended page tables. */ + unsigned int has_pgste:1; } mm_context_t; #define INIT_MM_CONTEXT(name) \ .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \ - .context.crst_list = LIST_HEAD_INIT(name.context.crst_list), \ .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), #endif diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index 8c277caa8d3..5682f160ff8 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -35,11 +35,9 @@ static inline int init_new_context(struct task_struct *tsk, * and if has_pgste is set, it will create extended page * tables. */ - mm->context.noexec = 0; mm->context.has_pgste = 1; mm->context.alloc_pgste = 1; } else { - mm->context.noexec = (user_mode == SECONDARY_SPACE_MODE); mm->context.has_pgste = 0; mm->context.alloc_pgste = 0; } @@ -63,10 +61,8 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd); if (user_mode != HOME_SPACE_MODE) { /* Load primary space page table origin. */ - pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd; - S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd); asm volatile(LCTL_OPCODE" 1,1,%0\n" - : : "m" (S390_lowcore.user_exec_asce) ); + : : "m" (S390_lowcore.user_asce) ); } else /* Load home space page table origin. */ asm volatile(LCTL_OPCODE" 13,13,%0" diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 3c987e9ec8d..accb372ddc7 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -90,6 +90,7 @@ static inline void copy_page(void *to, void *from) */ typedef struct { unsigned long pgprot; } pgprot_t; +typedef struct { unsigned long pgste; } pgste_t; typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd; } pmd_t; typedef struct { unsigned long pud; } pud_t; @@ -97,18 +98,21 @@ typedef struct { unsigned long pgd; } pgd_t; typedef pte_t *pgtable_t; #define pgprot_val(x) ((x).pgprot) +#define pgste_val(x) ((x).pgste) #define pte_val(x) ((x).pte) #define pmd_val(x) ((x).pmd) #define pud_val(x) ((x).pud) #define pgd_val(x) ((x).pgd) +#define __pgste(x) ((pgste_t) { (x) } ) #define __pte(x) ((pte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) +#define __pud(x) ((pud_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) -static inline void -page_set_storage_key(unsigned long addr, unsigned int skey, int mapped) +static inline void page_set_storage_key(unsigned long addr, + unsigned char skey, int mapped) { if (!mapped) asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0" @@ -117,15 +121,59 @@ page_set_storage_key(unsigned long addr, unsigned int skey, int mapped) asm volatile("sske %0,%1" : : "d" (skey), "a" (addr)); } -static inline unsigned int -page_get_storage_key(unsigned long addr) +static inline unsigned char page_get_storage_key(unsigned long addr) { - unsigned int skey; + unsigned char skey; - asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0)); + asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr)); return skey; } +static inline int page_reset_referenced(unsigned long addr) +{ + unsigned int ipm; + + asm volatile( + " rrbe 0,%1\n" + " ipm %0\n" + : "=d" (ipm) : "a" (addr) : "cc"); + return !!(ipm & 0x20000000); +} + +/* Bits int the storage key */ +#define _PAGE_CHANGED 0x02 /* HW changed bit */ +#define _PAGE_REFERENCED 0x04 /* HW referenced bit */ +#define _PAGE_FP_BIT 0x08 /* HW fetch protection bit */ +#define _PAGE_ACC_BITS 0xf0 /* HW access control bits */ + +/* + * Test and clear dirty bit in storage key. + * We can't clear the changed bit atomically. This is a potential + * race against modification of the referenced bit. This function + * should therefore only be called if it is not mapped in any + * address space. + */ +#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY +static inline int page_test_and_clear_dirty(unsigned long pfn, int mapped) +{ + unsigned char skey; + + skey = page_get_storage_key(pfn << PAGE_SHIFT); + if (!(skey & _PAGE_CHANGED)) + return 0; + page_set_storage_key(pfn << PAGE_SHIFT, skey & ~_PAGE_CHANGED, mapped); + return 1; +} + +/* + * Test and clear referenced bit in storage key. + */ +#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG +static inline int page_test_and_clear_young(unsigned long pfn) +{ + return page_reset_referenced(pfn << PAGE_SHIFT); +} + struct page; void arch_free_page(struct page *page, int order); void arch_alloc_page(struct page *page, int order); diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h index f7ad8719d02..5325c89a584 100644 --- a/arch/s390/include/asm/percpu.h +++ b/arch/s390/include/asm/percpu.h @@ -1,6 +1,9 @@ #ifndef __ARCH_S390_PERCPU__ #define __ARCH_S390_PERCPU__ +#include <linux/preempt.h> +#include <asm/cmpxchg.h> + /* * s390 uses its own implementation for per cpu data, the offset of * the cpu local data area is cached in the cpu's lowcore memory. @@ -16,6 +19,71 @@ #define ARCH_NEEDS_WEAK_PER_CPU #endif +#define arch_irqsafe_cpu_to_op(pcp, val, op) \ +do { \ + typedef typeof(pcp) pcp_op_T__; \ + pcp_op_T__ old__, new__, prev__; \ + pcp_op_T__ *ptr__; \ + preempt_disable(); \ + ptr__ = __this_cpu_ptr(&(pcp)); \ + prev__ = *ptr__; \ + do { \ + old__ = prev__; \ + new__ = old__ op (val); \ + switch (sizeof(*ptr__)) { \ + case 8: \ + prev__ = cmpxchg64(ptr__, old__, new__); \ + break; \ + default: \ + prev__ = cmpxchg(ptr__, old__, new__); \ + } \ + } while (prev__ != old__); \ + preempt_enable(); \ +} while (0) + +#define irqsafe_cpu_add_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +) +#define irqsafe_cpu_add_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +) +#define irqsafe_cpu_add_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +) +#define irqsafe_cpu_add_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +) + +#define irqsafe_cpu_and_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &) +#define irqsafe_cpu_and_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &) +#define irqsafe_cpu_and_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &) +#define irqsafe_cpu_and_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &) + +#define irqsafe_cpu_or_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |) +#define irqsafe_cpu_or_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |) +#define irqsafe_cpu_or_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |) +#define irqsafe_cpu_or_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |) + +#define irqsafe_cpu_xor_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^) +#define irqsafe_cpu_xor_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^) +#define irqsafe_cpu_xor_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^) +#define irqsafe_cpu_xor_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^) + +#define arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) \ +({ \ + typedef typeof(pcp) pcp_op_T__; \ + pcp_op_T__ ret__; \ + pcp_op_T__ *ptr__; \ + preempt_disable(); \ + ptr__ = __this_cpu_ptr(&(pcp)); \ + switch (sizeof(*ptr__)) { \ + case 8: \ + ret__ = cmpxchg64(ptr__, oval, nval); \ + break; \ + default: \ + ret__ = cmpxchg(ptr__, oval, nval); \ + } \ + preempt_enable(); \ + ret__; \ +}) + +#define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) +#define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) +#define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) +#define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) + #include <asm-generic/percpu.h> #endif /* __ARCH_S390_PERCPU__ */ diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index 082eb4e50e8..f6314af3b35 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -19,14 +19,13 @@ #define check_pgt_cache() do {} while (0) -unsigned long *crst_table_alloc(struct mm_struct *, int); +unsigned long *crst_table_alloc(struct mm_struct *); void crst_table_free(struct mm_struct *, unsigned long *); void crst_table_free_rcu(struct mm_struct *, unsigned long *); unsigned long *page_table_alloc(struct mm_struct *); void page_table_free(struct mm_struct *, unsigned long *); void page_table_free_rcu(struct mm_struct *, unsigned long *); -void disable_noexec(struct mm_struct *, struct task_struct *); static inline void clear_table(unsigned long *s, unsigned long val, size_t n) { @@ -50,9 +49,6 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n) static inline void crst_table_init(unsigned long *crst, unsigned long entry) { clear_table(crst, entry, sizeof(unsigned long)*2048); - crst = get_shadow_table(crst); - if (crst) - clear_table(crst, entry, sizeof(unsigned long)*2048); } #ifndef __s390x__ @@ -69,10 +65,7 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm) #define pmd_free(mm, x) do { } while (0) #define pgd_populate(mm, pgd, pud) BUG() -#define pgd_populate_kernel(mm, pgd, pud) BUG() - #define pud_populate(mm, pud, pmd) BUG() -#define pud_populate_kernel(mm, pud, pmd) BUG() #else /* __s390x__ */ @@ -90,7 +83,7 @@ void crst_table_downgrade(struct mm_struct *, unsigned long limit); static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address) { - unsigned long *table = crst_table_alloc(mm, mm->context.noexec); + unsigned long *table = crst_table_alloc(mm); if (table) crst_table_init(table, _REGION3_ENTRY_EMPTY); return (pud_t *) table; @@ -99,43 +92,21 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr) { - unsigned long *table = crst_table_alloc(mm, mm->context.noexec); + unsigned long *table = crst_table_alloc(mm); if (table) crst_table_init(table, _SEGMENT_ENTRY_EMPTY); return (pmd_t *) table; } #define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd) -static inline void pgd_populate_kernel(struct mm_struct *mm, - pgd_t *pgd, pud_t *pud) -{ - pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud); -} - static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) { - pgd_populate_kernel(mm, pgd, pud); - if (mm->context.noexec) { - pgd = get_shadow_table(pgd); - pud = get_shadow_table(pud); - pgd_populate_kernel(mm, pgd, pud); - } -} - -static inline void pud_populate_kernel(struct mm_struct *mm, - pud_t *pud, pmd_t *pmd) -{ - pud_val(*pud) = _REGION3_ENTRY | __pa(pmd); + pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud); } static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { - pud_populate_kernel(mm, pud, pmd); - if (mm->context.noexec) { - pud = get_shadow_table(pud); - pmd = get_shadow_table(pmd); - pud_populate_kernel(mm, pud, pmd); - } + pud_val(*pud) = _REGION3_ENTRY | __pa(pmd); } #endif /* __s390x__ */ @@ -143,29 +114,19 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) static inline pgd_t *pgd_alloc(struct mm_struct *mm) { spin_lock_init(&mm->context.list_lock); - INIT_LIST_HEAD(&mm->context.crst_list); INIT_LIST_HEAD(&mm->context.pgtable_list); - return (pgd_t *) - crst_table_alloc(mm, user_mode == SECONDARY_SPACE_MODE); + return (pgd_t *) crst_table_alloc(mm); } #define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd) -static inline void pmd_populate_kernel(struct mm_struct *mm, - pmd_t *pmd, pte_t *pte) -{ - pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte); -} - static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte) { - pmd_populate_kernel(mm, pmd, pte); - if (mm->context.noexec) { - pmd = get_shadow_table(pmd); - pmd_populate_kernel(mm, pmd, pte + PTRS_PER_PTE); - } + pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte); } +#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte) + #define pmd_pgtable(pmd) \ (pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 02ace3491c5..c4773a2ef3d 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -31,9 +31,8 @@ #ifndef __ASSEMBLY__ #include <linux/sched.h> #include <linux/mm_types.h> -#include <asm/bitops.h> #include <asm/bug.h> -#include <asm/processor.h> +#include <asm/page.h> extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096))); extern void paging_init(void); @@ -243,11 +242,13 @@ extern unsigned long VMALLOC_START; /* Software bits in the page table entry */ #define _PAGE_SWT 0x001 /* SW pte type bit t */ #define _PAGE_SWX 0x002 /* SW pte type bit x */ -#define _PAGE_SPECIAL 0x004 /* SW associated with special page */ +#define _PAGE_SWC 0x004 /* SW pte changed bit (for KVM) */ +#define _PAGE_SWR 0x008 /* SW pte referenced bit (for KVM) */ +#define _PAGE_SPECIAL 0x010 /* SW associated with special page */ #define __HAVE_ARCH_PTE_SPECIAL /* Set of bits not changed in pte_modify */ -#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL) +#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_SWC | _PAGE_SWR) /* Six different types of pages. */ #define _PAGE_TYPE_EMPTY 0x400 @@ -256,8 +257,6 @@ extern unsigned long VMALLOC_START; #define _PAGE_TYPE_FILE 0x601 /* bit 0x002 is used for offset !! */ #define _PAGE_TYPE_RO 0x200 #define _PAGE_TYPE_RW 0x000 -#define _PAGE_TYPE_EX_RO 0x202 -#define _PAGE_TYPE_EX_RW 0x002 /* * Only four types for huge pages, using the invalid bit and protection bit @@ -287,8 +286,6 @@ extern unsigned long VMALLOC_START; * _PAGE_TYPE_FILE 11?1 -> 11?1 * _PAGE_TYPE_RO 0100 -> 1100 * _PAGE_TYPE_RW 0000 -> 1000 - * _PAGE_TYPE_EX_RO 0110 -> 1110 - * _PAGE_TYPE_EX_RW 0010 -> 1010 * * pte_none is true for bits combinations 1000, 1010, 1100, 1110 * pte_present is true for bits combinations 0000, 0010, 0100, 0110, 1001 @@ -297,14 +294,17 @@ extern unsigned long VMALLOC_START; */ /* Page status table bits for virtualization */ -#define RCP_PCL_BIT 55 -#define RCP_HR_BIT 54 -#define RCP_HC_BIT 53 -#define RCP_GR_BIT 50 -#define RCP_GC_BIT 49 - -/* User dirty bit for KVM's migration feature */ -#define KVM_UD_BIT 47 +#define RCP_ACC_BITS 0xf000000000000000UL +#define RCP_FP_BIT 0x0800000000000000UL +#define RCP_PCL_BIT 0x0080000000000000UL +#define RCP_HR_BIT 0x0040000000000000UL +#define RCP_HC_BIT 0x0020000000000000UL +#define RCP_GR_BIT 0x0004000000000000UL +#define RCP_GC_BIT 0x0002000000000000UL + +/* User dirty / referenced bit for KVM's migration feature */ +#define KVM_UR_BIT 0x0000800000000000UL +#define KVM_UC_BIT 0x0000400000000000UL #ifndef __s390x__ @@ -377,85 +377,54 @@ extern unsigned long VMALLOC_START; #define _ASCE_USER_BITS (_ASCE_SPACE_SWITCH | _ASCE_PRIVATE_SPACE | \ _ASCE_ALT_EVENT) -/* Bits int the storage key */ -#define _PAGE_CHANGED 0x02 /* HW changed bit */ -#define _PAGE_REFERENCED 0x04 /* HW referenced bit */ - /* * Page protection definitions. */ #define PAGE_NONE __pgprot(_PAGE_TYPE_NONE) #define PAGE_RO __pgprot(_PAGE_TYPE_RO) #define PAGE_RW __pgprot(_PAGE_TYPE_RW) -#define PAGE_EX_RO __pgprot(_PAGE_TYPE_EX_RO) -#define PAGE_EX_RW __pgprot(_PAGE_TYPE_EX_RW) #define PAGE_KERNEL PAGE_RW #define PAGE_COPY PAGE_RO /* - * Dependent on the EXEC_PROTECT option s390 can do execute protection. - * Write permission always implies read permission. In theory with a - * primary/secondary page table execute only can be implemented but - * it would cost an additional bit in the pte to distinguish all the - * different pte types. To avoid that execute permission currently - * implies read permission as well. + * On s390 the page table entry has an invalid bit and a read-only bit. + * Read permission implies execute permission and write permission + * implies read permission. */ /*xwr*/ #define __P000 PAGE_NONE #define __P001 PAGE_RO #define __P010 PAGE_RO #define __P011 PAGE_RO -#define __P100 PAGE_EX_RO -#define __P101 PAGE_EX_RO -#define __P110 PAGE_EX_RO -#define __P111 PAGE_EX_RO +#define __P100 PAGE_RO +#define __P101 PAGE_RO +#define __P110 PAGE_RO +#define __P111 PAGE_RO #define __S000 PAGE_NONE #define __S001 PAGE_RO #define __S010 PAGE_RW #define __S011 PAGE_RW -#define __S100 PAGE_EX_RO -#define __S101 PAGE_EX_RO -#define __S110 PAGE_EX_RW -#define __S111 PAGE_EX_RW - -#ifndef __s390x__ -# define PxD_SHADOW_SHIFT 1 -#else /* __s390x__ */ -# define PxD_SHADOW_SHIFT 2 -#endif /* __s390x__ */ +#define __S100 PAGE_RO +#define __S101 PAGE_RO +#define __S110 PAGE_RW +#define __S111 PAGE_RW -static inline void *get_shadow_table(void *table) +static inline int mm_exclusive(struct mm_struct *mm) { - unsigned long addr, offset; - struct page *page; - - addr = (unsigned long) table; - offset = addr & ((PAGE_SIZE << PxD_SHADOW_SHIFT) - 1); - page = virt_to_page((void *)(addr ^ offset)); - return (void *)(addr_t)(page->index ? (page->index | offset) : 0UL); + return likely(mm == current->active_mm && + atomic_read(&mm->context.attach_count) <= 1); } -/* - * Certain architectures need to do special things when PTEs - * within a page table are directly modified. Thus, the following - * hook is made available. - */ -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t entry) +static inline int mm_has_pgste(struct mm_struct *mm) { - *ptep = entry; - if (mm->context.noexec) { - if (!(pte_val(entry) & _PAGE_INVALID) && - (pte_val(entry) & _PAGE_SWX)) - pte_val(entry) |= _PAGE_RO; - else - pte_val(entry) = _PAGE_TYPE_EMPTY; - ptep[PTRS_PER_PTE] = entry; - } +#ifdef CONFIG_PGSTE + if (unlikely(mm->context.has_pgste)) + return 1; +#endif + return 0; } - /* * pgd/pmd/pte query functions */ @@ -568,52 +537,127 @@ static inline int pte_special(pte_t pte) } #define __HAVE_ARCH_PTE_SAME -#define pte_same(a,b) (pte_val(a) == pte_val(b)) +static inline int pte_same(pte_t a, pte_t b) +{ + return pte_val(a) == pte_val(b); +} -static inline void rcp_lock(pte_t *ptep) +static inline pgste_t pgste_get_lock(pte_t *ptep) { + unsigned long new = 0; #ifdef CONFIG_PGSTE - unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE); + unsigned long old; + preempt_disable(); - while (test_and_set_bit(RCP_PCL_BIT, pgste)) - ; + asm( + " lg %0,%2\n" + "0: lgr %1,%0\n" + " nihh %0,0xff7f\n" /* clear RCP_PCL_BIT in old */ + " oihh %1,0x0080\n" /* set RCP_PCL_BIT in new */ + " csg %0,%1,%2\n" + " jl 0b\n" + : "=&d" (old), "=&d" (new), "=Q" (ptep[PTRS_PER_PTE]) + : "Q" (ptep[PTRS_PER_PTE]) : "cc"); #endif + return __pgste(new); } -static inline void rcp_unlock(pte_t *ptep) +static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste) { #ifdef CONFIG_PGSTE - unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE); - clear_bit(RCP_PCL_BIT, pgste); + asm( + " nihh %1,0xff7f\n" /* clear RCP_PCL_BIT */ + " stg %1,%0\n" + : "=Q" (ptep[PTRS_PER_PTE]) + : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) : "cc"); preempt_enable(); #endif } -/* forward declaration for SetPageUptodate in page-flags.h*/ -static inline void page_clear_dirty(struct page *page, int mapped); -#include <linux/page-flags.h> - -static inline void ptep_rcp_copy(pte_t *ptep) +static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) { #ifdef CONFIG_PGSTE - struct page *page = virt_to_page(pte_val(*ptep)); - unsigned int skey; - unsigned long *pgste = (unsigned long *) (ptep + PTRS_PER_PTE); - - skey = page_get_storage_key(page_to_phys(page)); - if (skey & _PAGE_CHANGED) { - set_bit_simple(RCP_GC_BIT, pgste); - set_bit_simple(KVM_UD_BIT, pgste); + unsigned long pfn, bits; + unsigned char skey; + + pfn = pte_val(*ptep) >> PAGE_SHIFT; + skey = page_get_storage_key(pfn); + bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED); + /* Clear page changed & referenced bit in the storage key */ + if (bits) { + skey ^= bits; + page_set_storage_key(pfn, skey, 1); } - if (skey & _PAGE_REFERENCED) - set_bit_simple(RCP_GR_BIT, pgste); - if (test_and_clear_bit_simple(RCP_HC_BIT, pgste)) { - SetPageDirty(page); - set_bit_simple(KVM_UD_BIT, pgste); - } - if (test_and_clear_bit_simple(RCP_HR_BIT, pgste)) - SetPageReferenced(page); + /* Transfer page changed & referenced bit to guest bits in pgste */ + pgste_val(pgste) |= bits << 48; /* RCP_GR_BIT & RCP_GC_BIT */ + /* Get host changed & referenced bits from pgste */ + bits |= (pgste_val(pgste) & (RCP_HR_BIT | RCP_HC_BIT)) >> 52; + /* Clear host bits in pgste. */ + pgste_val(pgste) &= ~(RCP_HR_BIT | RCP_HC_BIT); + pgste_val(pgste) &= ~(RCP_ACC_BITS | RCP_FP_BIT); + /* Copy page access key and fetch protection bit to pgste */ + pgste_val(pgste) |= + (unsigned long) (skey & (_PAGE_ACC_BITS | _PAGE_FP_BIT)) << 56; + /* Transfer changed and referenced to kvm user bits */ + pgste_val(pgste) |= bits << 45; /* KVM_UR_BIT & KVM_UC_BIT */ + /* Transfer changed & referenced to pte sofware bits */ + pte_val(*ptep) |= bits << 1; /* _PAGE_SWR & _PAGE_SWC */ #endif + return pgste; + +} + +static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + int young; + + young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK); + /* Transfer page referenced bit to pte software bit (host view) */ + if (young || (pgste_val(pgste) & RCP_HR_BIT)) + pte_val(*ptep) |= _PAGE_SWR; + /* Clear host referenced bit in pgste. */ + pgste_val(pgste) &= ~RCP_HR_BIT; + /* Transfer page referenced bit to guest bit in pgste */ + pgste_val(pgste) |= (unsigned long) young << 50; /* set RCP_GR_BIT */ +#endif + return pgste; + +} + +static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + unsigned long pfn; + unsigned long okey, nkey; + + pfn = pte_val(*ptep) >> PAGE_SHIFT; + okey = nkey = page_get_storage_key(pfn); + nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); + /* Set page access key and fetch protection bit from pgste */ + nkey |= (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; + if (okey != nkey) + page_set_storage_key(pfn, nkey, 1); +#endif +} + +/* + * Certain architectures need to do special things when PTEs + * within a page table are directly modified. Thus, the following + * hook is made available. + */ +static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t entry) +{ + pgste_t pgste; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste_set_pte(ptep, pgste); + *ptep = entry; + pgste_set_unlock(ptep, pgste); + } else + *ptep = entry; } /* @@ -627,19 +671,19 @@ static inline int pte_write(pte_t pte) static inline int pte_dirty(pte_t pte) { - /* A pte is neither clean nor dirty on s/390. The dirty bit - * is in the storage key. See page_test_and_clear_dirty for - * details. - */ +#ifdef CONFIG_PGSTE + if (pte_val(pte) & _PAGE_SWC) + return 1; +#endif return 0; } static inline int pte_young(pte_t pte) { - /* A pte is neither young nor old on s/390. The young bit - * is in the storage key. See page_test_and_clear_young for - * details. - */ +#ifdef CONFIG_PGSTE + if (pte_val(pte) & _PAGE_SWR) + return 1; +#endif return 0; } @@ -647,64 +691,30 @@ static inline int pte_young(pte_t pte) * pgd/pmd/pte modification functions */ -#ifndef __s390x__ - -#define pgd_clear(pgd) do { } while (0) -#define pud_clear(pud) do { } while (0) - -#else /* __s390x__ */ - -static inline void pgd_clear_kernel(pgd_t * pgd) +static inline void pgd_clear(pgd_t *pgd) { +#ifdef __s390x__ if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2) pgd_val(*pgd) = _REGION2_ENTRY_EMPTY; +#endif } -static inline void pgd_clear(pgd_t * pgd) -{ - pgd_t *shadow = get_shadow_table(pgd); - - pgd_clear_kernel(pgd); - if (shadow) - pgd_clear_kernel(shadow); -} - -static inline void pud_clear_kernel(pud_t *pud) +static inline void pud_clear(pud_t *pud) { +#ifdef __s390x__ if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3) pud_val(*pud) = _REGION3_ENTRY_EMPTY; +#endif } -static inline void pud_clear(pud_t *pud) -{ - pud_t *shadow = get_shadow_table(pud); - - pud_clear_kernel(pud); - if (shadow) - pud_clear_kernel(shadow); -} - -#endif /* __s390x__ */ - -static inline void pmd_clear_kernel(pmd_t * pmdp) +static inline void pmd_clear(pmd_t *pmdp) { pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY; } -static inline void pmd_clear(pmd_t *pmd) -{ - pmd_t *shadow = get_shadow_table(pmd); - - pmd_clear_kernel(pmd); - if (shadow) - pmd_clear_kernel(shadow); -} - static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { pte_val(*ptep) = _PAGE_TYPE_EMPTY; - if (mm->context.noexec) - pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY; } /* @@ -734,35 +744,27 @@ static inline pte_t pte_mkwrite(pte_t pte) static inline pte_t pte_mkclean(pte_t pte) { - /* The only user of pte_mkclean is the fork() code. - We must *not* clear the *physical* page dirty bit - just because fork() wants to clear the dirty bit in - *one* of the page's mappings. So we just do nothing. */ +#ifdef CONFIG_PGSTE + pte_val(pte) &= ~_PAGE_SWC; +#endif return pte; } static inline pte_t pte_mkdirty(pte_t pte) { - /* We do not explicitly set the dirty bit because the - * sske instruction is slow. It is faster to let the - * next instruction set the dirty bit. - */ return pte; } static inline pte_t pte_mkold(pte_t pte) { - /* S/390 doesn't keep its dirty/referenced bit in the pte. - * There is no point in clearing the real referenced bit. - */ +#ifdef CONFIG_PGSTE + pte_val(pte) &= ~_PAGE_SWR; +#endif return pte; } static inline pte_t pte_mkyoung(pte_t pte) { - /* S/390 doesn't keep its dirty/referenced bit in the pte. - * There is no point in setting the real referenced bit. - */ return pte; } @@ -800,62 +802,60 @@ static inline pte_t pte_mkhuge(pte_t pte) } #endif -#ifdef CONFIG_PGSTE /* - * Get (and clear) the user dirty bit for a PTE. + * Get (and clear) the user dirty bit for a pte. */ -static inline int kvm_s390_test_and_clear_page_dirty(struct mm_struct *mm, - pte_t *ptep) +static inline int ptep_test_and_clear_user_dirty(struct mm_struct *mm, + pte_t *ptep) { - int dirty; - unsigned long *pgste; - struct page *page; - unsigned int skey; - - if (!mm->context.has_pgste) - return -EINVAL; - rcp_lock(ptep); - pgste = (unsigned long *) (ptep + PTRS_PER_PTE); - page = virt_to_page(pte_val(*ptep)); - skey = page_get_storage_key(page_to_phys(page)); - if (skey & _PAGE_CHANGED) { - set_bit_simple(RCP_GC_BIT, pgste); - set_bit_simple(KVM_UD_BIT, pgste); + pgste_t pgste; + int dirty = 0; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_all(ptep, pgste); + dirty = !!(pgste_val(pgste) & KVM_UC_BIT); + pgste_val(pgste) &= ~KVM_UC_BIT; + pgste_set_unlock(ptep, pgste); + return dirty; } - if (test_and_clear_bit_simple(RCP_HC_BIT, pgste)) { - SetPageDirty(page); - set_bit_simple(KVM_UD_BIT, pgste); - } - dirty = test_and_clear_bit_simple(KVM_UD_BIT, pgste); - if (skey & _PAGE_CHANGED) - page_clear_dirty(page, 1); - rcp_unlock(ptep); return dirty; } -#endif + +/* + * Get (and clear) the user referenced bit for a pte. + */ +static inline int ptep_test_and_clear_user_young(struct mm_struct *mm, + pte_t *ptep) +{ + pgste_t pgste; + int young = 0; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_young(ptep, pgste); + young = !!(pgste_val(pgste) & KVM_UR_BIT); + pgste_val(pgste) &= ~KVM_UR_BIT; + pgste_set_unlock(ptep, pgste); + } + return young; +} #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { -#ifdef CONFIG_PGSTE - unsigned long physpage; - int young; - unsigned long *pgste; + pgste_t pgste; + pte_t pte; - if (!vma->vm_mm->context.has_pgste) - return 0; - physpage = pte_val(*ptep) & PAGE_MASK; - pgste = (unsigned long *) (ptep + PTRS_PER_PTE); - - young = ((page_get_storage_key(physpage) & _PAGE_REFERENCED) != 0); - rcp_lock(ptep); - if (young) - set_bit_simple(RCP_GR_BIT, pgste); - young |= test_and_clear_bit_simple(RCP_HR_BIT, pgste); - rcp_unlock(ptep); - return young; -#endif + if (mm_has_pgste(vma->vm_mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_young(ptep, pgste); + pte = *ptep; + *ptep = pte_mkold(pte); + pgste_set_unlock(ptep, pgste); + return pte_young(pte); + } return 0; } @@ -867,10 +867,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, * On s390 reference bits are in storage key and never in TLB * With virtualization we handle the reference bit, without we * we can simply return */ -#ifdef CONFIG_PGSTE return ptep_test_and_clear_young(vma, address, ptep); -#endif - return 0; } static inline void __ptep_ipte(unsigned long address, pte_t *ptep) @@ -890,25 +887,6 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep) } } -static inline void ptep_invalidate(struct mm_struct *mm, - unsigned long address, pte_t *ptep) -{ - if (mm->context.has_pgste) { - rcp_lock(ptep); - __ptep_ipte(address, ptep); - ptep_rcp_copy(ptep); - pte_val(*ptep) = _PAGE_TYPE_EMPTY; - rcp_unlock(ptep); - return; - } - __ptep_ipte(address, ptep); - pte_val(*ptep) = _PAGE_TYPE_EMPTY; - if (mm->context.noexec) { - __ptep_ipte(address, ptep + PTRS_PER_PTE); - pte_val(*(ptep + PTRS_PER_PTE)) = _PAGE_TYPE_EMPTY; - } -} - /* * This is hard to understand. ptep_get_and_clear and ptep_clear_flush * both clear the TLB for the unmapped pte. The reason is that @@ -923,24 +901,72 @@ static inline void ptep_invalidate(struct mm_struct *mm, * is a nop. */ #define __HAVE_ARCH_PTEP_GET_AND_CLEAR -#define ptep_get_and_clear(__mm, __address, __ptep) \ -({ \ - pte_t __pte = *(__ptep); \ - (__mm)->context.flush_mm = 1; \ - if (atomic_read(&(__mm)->context.attach_count) > 1 || \ - (__mm) != current->active_mm) \ - ptep_invalidate(__mm, __address, __ptep); \ - else \ - pte_clear((__mm), (__address), (__ptep)); \ - __pte; \ -}) +static inline pte_t ptep_get_and_clear(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte; + + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; + + if (mm_has_pgste(mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } + return pte; +} + +#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION +static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, + unsigned long address, + pte_t *ptep) +{ + pte_t pte; + + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste_get_lock(ptep); + + pte = *ptep; + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + return pte; +} + +static inline void ptep_modify_prot_commit(struct mm_struct *mm, + unsigned long address, + pte_t *ptep, pte_t pte) +{ + *ptep = pte; + if (mm_has_pgste(mm)) + pgste_set_unlock(ptep, *(pgste_t *)(ptep + PTRS_PER_PTE)); +} #define __HAVE_ARCH_PTEP_CLEAR_FLUSH static inline pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) { - pte_t pte = *ptep; - ptep_invalidate(vma->vm_mm, address, ptep); + pgste_t pgste; + pte_t pte; + + if (mm_has_pgste(vma->vm_mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; + + if (mm_has_pgste(vma->vm_mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } return pte; } @@ -953,76 +979,67 @@ static inline pte_t ptep_clear_flush(struct vm_area_struct *vma, */ #define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, - unsigned long addr, + unsigned long address, pte_t *ptep, int full) { - pte_t pte = *ptep; + pgste_t pgste; + pte_t pte; + + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + if (!full) + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; - if (full) - pte_clear(mm, addr, ptep); - else - ptep_invalidate(mm, addr, ptep); + if (mm_has_pgste(mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } return pte; } #define __HAVE_ARCH_PTEP_SET_WRPROTECT -#define ptep_set_wrprotect(__mm, __addr, __ptep) \ -({ \ - pte_t __pte = *(__ptep); \ - if (pte_write(__pte)) { \ - (__mm)->context.flush_mm = 1; \ - if (atomic_read(&(__mm)->context.attach_count) > 1 || \ - (__mm) != current->active_mm) \ - ptep_invalidate(__mm, __addr, __ptep); \ - set_pte_at(__mm, __addr, __ptep, pte_wrprotect(__pte)); \ - } \ -}) +static inline pte_t ptep_set_wrprotect(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte = *ptep; -#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS -#define ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \ -({ \ - int __changed = !pte_same(*(__ptep), __entry); \ - if (__changed) { \ - ptep_invalidate((__vma)->vm_mm, __addr, __ptep); \ - set_pte_at((__vma)->vm_mm, __addr, __ptep, __entry); \ - } \ - __changed; \ -}) + if (pte_write(pte)) { + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); -/* - * Test and clear dirty bit in storage key. - * We can't clear the changed bit atomically. This is a potential - * race against modification of the referenced bit. This function - * should therefore only be called if it is not mapped in any - * address space. - */ -#define __HAVE_ARCH_PAGE_TEST_DIRTY -static inline int page_test_dirty(struct page *page) -{ - return (page_get_storage_key(page_to_phys(page)) & _PAGE_CHANGED) != 0; -} + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + *ptep = pte_wrprotect(pte); -#define __HAVE_ARCH_PAGE_CLEAR_DIRTY -static inline void page_clear_dirty(struct page *page, int mapped) -{ - page_set_storage_key(page_to_phys(page), PAGE_DEFAULT_KEY, mapped); + if (mm_has_pgste(mm)) + pgste_set_unlock(ptep, pgste); + } + return pte; } -/* - * Test and clear referenced bit in storage key. - */ -#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG -static inline int page_test_and_clear_young(struct page *page) +#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS +static inline int ptep_set_access_flags(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, + pte_t entry, int dirty) { - unsigned long physpage = page_to_phys(page); - int ccode; - - asm volatile( - " rrbe 0,%1\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (ccode) : "a" (physpage) : "cc" ); - return ccode & 2; + pgste_t pgste; + + if (pte_same(*ptep, entry)) + return 0; + if (mm_has_pgste(vma->vm_mm)) + pgste = pgste_get_lock(ptep); + + __ptep_ipte(address, ptep); + *ptep = entry; + + if (mm_has_pgste(vma->vm_mm)) + pgste_set_unlock(ptep, pgste); + return 1; } /* diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 2c79b641627..1300c302533 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -84,6 +84,7 @@ struct thread_struct { struct per_event per_event; /* Cause of the last PER trap */ /* pfault_wait is used to block the process on a pfault event */ unsigned long pfault_wait; + struct list_head list; }; typedef struct thread_struct thread_struct; diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h index 29d5d6d4bec..b7a4f2eb005 100644 --- a/arch/s390/include/asm/tlbflush.h +++ b/arch/s390/include/asm/tlbflush.h @@ -50,7 +50,7 @@ static inline void __tlb_flush_full(struct mm_struct *mm) /* * If the process only ran on the local cpu, do a local flush. */ - local_cpumask = cpumask_of_cpu(smp_processor_id()); + cpumask_copy(&local_cpumask, cpumask_of(smp_processor_id())); if (cpumask_equal(mm_cpumask(mm), &local_cpumask)) __tlb_flush_local(); else @@ -80,16 +80,11 @@ static inline void __tlb_flush_mm(struct mm_struct * mm) * on all cpus instead of doing a local flush if the mm * only ran on the local cpu. */ - if (MACHINE_HAS_IDTE) { - if (mm->context.noexec) - __tlb_flush_idte((unsigned long) - get_shadow_table(mm->pgd) | - mm->context.asce_bits); + if (MACHINE_HAS_IDTE) __tlb_flush_idte((unsigned long) mm->pgd | mm->context.asce_bits); - return; - } - __tlb_flush_full(mm); + else + __tlb_flush_full(mm); } static inline void __tlb_flush_mm_cond(struct mm_struct * mm) diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h index e8215257237..9208e69245a 100644 --- a/arch/s390/include/asm/unistd.h +++ b/arch/s390/include/asm/unistd.h @@ -385,6 +385,7 @@ /* Ignore system calls that are also reachable via sys_socket */ #define __IGNORE_recvmmsg +#define __IGNORE_sendmmsg #define __ARCH_WANT_IPC_PARSE_VERSION #define __ARCH_WANT_OLD_READDIR diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index fe03c140002..edfbd17d708 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -124,13 +124,11 @@ int main(void) DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer)); DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock)); DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task)); + DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid)); DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info)); DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack)); DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack)); DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack)); - DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce)); - DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce)); - DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce)); DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock)); DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock)); DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags)); diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 1b67fc6ebdc..0476174dfff 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -212,6 +212,7 @@ __switch_to: lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task st %r3,__LC_CURRENT # store task struct of next + mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next st %r5,__LC_THREAD_INFO # store thread info of next ahi %r5,STACK_SIZE # end of kernel stack of next st %r5,__LC_KERNEL_STACK # store end of kernel stack diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 9fd86456349..d61967e2eab 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -220,6 +220,7 @@ __switch_to: lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task stg %r3,__LC_CURRENT # store task struct of next + mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next stg %r5,__LC_THREAD_INFO # store thread info of next aghi %r5,STACK_SIZE # end of kernel stack of next stg %r5,__LC_KERNEL_STACK # store end of kernel stack diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index ea5099c9709..e204f9597aa 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -32,6 +32,7 @@ static const struct irq_class intrclass_names[] = { {.name = "VRT", .desc = "[EXT] Virtio" }, {.name = "SCP", .desc = "[EXT] Service Call" }, {.name = "IUC", .desc = "[EXT] IUCV" }, + {.name = "CPM", .desc = "[EXT] CPU Measurement" }, {.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" }, {.name = "QDI", .desc = "[I/O] QDIO Interrupt" }, {.name = "DAS", .desc = "[I/O] DASD" }, diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index a895e69379f..541a7509fae 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -9,41 +9,26 @@ #include <linux/compiler.h> #include <linux/cpu.h> -#include <linux/errno.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/mm.h> -#include <linux/fs.h> #include <linux/smp.h> -#include <linux/stddef.h> #include <linux/slab.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/vmalloc.h> -#include <linux/user.h> #include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/reboot.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/notifier.h> #include <linux/tick.h> -#include <linux/elfcore.h> -#include <linux/kernel_stat.h> #include <linux/personality.h> #include <linux/syscalls.h> #include <linux/compat.h> #include <linux/kprobes.h> #include <linux/random.h> -#include <asm/compat.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> +#include <linux/module.h> #include <asm/system.h> #include <asm/io.h> #include <asm/processor.h> #include <asm/irq.h> #include <asm/timer.h> #include <asm/nmi.h> +#include <asm/compat.h> #include <asm/smp.h> #include "entry.h" diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index f5434d1ecb3..0c35dee10b0 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -305,8 +305,7 @@ static int set_amode_and_uaccess(unsigned long user_amode, */ static int __init early_parse_switch_amode(char *p) { - if (user_mode != SECONDARY_SPACE_MODE) - user_mode = PRIMARY_SPACE_MODE; + user_mode = PRIMARY_SPACE_MODE; return 0; } early_param("switch_amode", early_parse_switch_amode); @@ -315,10 +314,6 @@ static int __init early_parse_user_mode(char *p) { if (p && strcmp(p, "primary") == 0) user_mode = PRIMARY_SPACE_MODE; -#ifdef CONFIG_S390_EXEC_PROTECT - else if (p && strcmp(p, "secondary") == 0) - user_mode = SECONDARY_SPACE_MODE; -#endif else if (!p || strcmp(p, "home") == 0) user_mode = HOME_SPACE_MODE; else @@ -327,31 +322,9 @@ static int __init early_parse_user_mode(char *p) } early_param("user_mode", early_parse_user_mode); -#ifdef CONFIG_S390_EXEC_PROTECT -/* - * Enable execute protection? - */ -static int __init early_parse_noexec(char *p) -{ - if (!strncmp(p, "off", 3)) - return 0; - user_mode = SECONDARY_SPACE_MODE; - return 0; -} -early_param("noexec", early_parse_noexec); -#endif /* CONFIG_S390_EXEC_PROTECT */ - static void setup_addressing_mode(void) { - if (user_mode == SECONDARY_SPACE_MODE) { - if (set_amode_and_uaccess(PSW_ASC_SECONDARY, - PSW32_ASC_SECONDARY)) - pr_info("Execute protection active, " - "mvcos available\n"); - else - pr_info("Execute protection active, " - "mvcos not available\n"); - } else if (user_mode == PRIMARY_SPACE_MODE) { + if (user_mode == PRIMARY_SPACE_MODE) { if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY)) pr_info("Address spaces switched, " "mvcos available\n"); diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 63c7d9ff220..f8e85ecbc45 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -335,7 +335,7 @@ static int smp_rescan_cpus_sigp(cpumask_t avail) smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN; if (!cpu_stopped(logical_cpu)) continue; - cpu_set(logical_cpu, cpu_present_map); + set_cpu_present(logical_cpu, true); smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED; logical_cpu = cpumask_next(logical_cpu, &avail); if (logical_cpu >= nr_cpu_ids) @@ -367,7 +367,7 @@ static int smp_rescan_cpus_sclp(cpumask_t avail) continue; __cpu_logical_map[logical_cpu] = cpu_id; smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN; - cpu_set(logical_cpu, cpu_present_map); + set_cpu_present(logical_cpu, true); if (cpu >= info->configured) smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY; else @@ -385,7 +385,7 @@ static int __smp_rescan_cpus(void) { cpumask_t avail; - cpus_xor(avail, cpu_possible_map, cpu_present_map); + cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask); if (smp_use_sigp_detection) return smp_rescan_cpus_sigp(avail); else @@ -467,7 +467,7 @@ int __cpuinit start_secondary(void *cpuvoid) notify_cpu_starting(smp_processor_id()); /* Mark this cpu as online */ ipi_call_lock(); - cpu_set(smp_processor_id(), cpu_online_map); + set_cpu_online(smp_processor_id(), true); ipi_call_unlock(); /* Switch on interrupts */ local_irq_enable(); @@ -644,7 +644,7 @@ int __cpu_disable(void) struct ec_creg_mask_parms cr_parms; int cpu = smp_processor_id(); - cpu_clear(cpu, cpu_online_map); + set_cpu_online(cpu, false); /* Disable pfault pseudo page faults on this cpu. */ pfault_fini(); @@ -654,8 +654,8 @@ int __cpu_disable(void) /* disable all external interrupts */ cr_parms.orvals[0] = 0; - cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 12 | - 1 << 11 | 1 << 10 | 1 << 6 | 1 << 4); + cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 11 | + 1 << 10 | 1 << 9 | 1 << 6 | 1 << 4); /* disable all I/O interrupts */ cr_parms.orvals[6] = 0; cr_parms.andvals[6] = ~(1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 | @@ -681,7 +681,7 @@ void __cpu_die(unsigned int cpu) atomic_dec(&init_mm.context.attach_count); } -void cpu_die(void) +void __noreturn cpu_die(void) { idle_task_exit(); while (sigp(smp_processor_id(), sigp_stop) == sigp_busy) @@ -738,8 +738,8 @@ void __init smp_prepare_boot_cpu(void) BUG_ON(smp_processor_id() != 0); current_thread_info()->cpu = 0; - cpu_set(0, cpu_present_map); - cpu_set(0, cpu_online_map); + set_cpu_present(0, true); + set_cpu_online(0, true); S390_lowcore.percpu_offset = __per_cpu_offset[0]; current_set[0] = current; smp_cpu_state[0] = CPU_STATE_CONFIGURED; @@ -1016,21 +1016,21 @@ int __ref smp_rescan_cpus(void) get_online_cpus(); mutex_lock(&smp_cpu_state_mutex); - newcpus = cpu_present_map; + cpumask_copy(&newcpus, cpu_present_mask); rc = __smp_rescan_cpus(); if (rc) goto out; - cpus_andnot(newcpus, cpu_present_map, newcpus); - for_each_cpu_mask(cpu, newcpus) { + cpumask_andnot(&newcpus, cpu_present_mask, &newcpus); + for_each_cpu(cpu, &newcpus) { rc = smp_add_present_cpu(cpu); if (rc) - cpu_clear(cpu, cpu_present_map); + set_cpu_present(cpu, false); } rc = 0; out: mutex_unlock(&smp_cpu_state_mutex); put_online_cpus(); - if (!cpus_empty(newcpus)) + if (!cpumask_empty(&newcpus)) topology_schedule_update(); return rc; } diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 87be655557a..a59557f1fb5 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -810,7 +810,7 @@ static int etr_sync_clock_stop(struct etr_aib *aib, int port) etr_sync.etr_port = port; get_online_cpus(); atomic_set(&etr_sync.cpus, num_online_cpus() - 1); - rc = stop_machine(etr_sync_clock, &etr_sync, &cpu_online_map); + rc = stop_machine(etr_sync_clock, &etr_sync, cpu_online_mask); put_online_cpus(); return rc; } @@ -1579,7 +1579,7 @@ static void stp_work_fn(struct work_struct *work) memset(&stp_sync, 0, sizeof(stp_sync)); get_online_cpus(); atomic_set(&stp_sync.cpus, num_online_cpus() - 1); - stop_machine(stp_sync_clock, &stp_sync, &cpu_online_map); + stop_machine(stp_sync_clock, &stp_sync, cpu_online_mask); put_online_cpus(); if (!check_sync_clock()) diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 94b06c31fc8..2eafb8c7a74 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -52,20 +52,20 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) { cpumask_t mask; - cpus_clear(mask); + cpumask_clear(&mask); if (!topology_enabled || !MACHINE_HAS_TOPOLOGY) { cpumask_copy(&mask, cpumask_of(cpu)); return mask; } while (info) { - if (cpu_isset(cpu, info->mask)) { + if (cpumask_test_cpu(cpu, &info->mask)) { mask = info->mask; break; } info = info->next; } - if (cpus_empty(mask)) - mask = cpumask_of_cpu(cpu); + if (cpumask_empty(&mask)) + cpumask_copy(&mask, cpumask_of(cpu)); return mask; } @@ -85,10 +85,10 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu, if (cpu_logical_map(lcpu) != rcpu) continue; #ifdef CONFIG_SCHED_BOOK - cpu_set(lcpu, book->mask); + cpumask_set_cpu(lcpu, &book->mask); cpu_book_id[lcpu] = book->id; #endif - cpu_set(lcpu, core->mask); + cpumask_set_cpu(lcpu, &core->mask); cpu_core_id[lcpu] = core->id; smp_cpu_polarization[lcpu] = tl_cpu->pp; } @@ -101,13 +101,13 @@ static void clear_masks(void) info = &core_info; while (info) { - cpus_clear(info->mask); + cpumask_clear(&info->mask); info = info->next; } #ifdef CONFIG_SCHED_BOOK info = &book_info; while (info) { - cpus_clear(info->mask); + cpumask_clear(&info->mask); info = info->next; } #endif diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index d13e8755a8c..8ad2b34ad15 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -22,6 +22,9 @@ obj-y += vdso32_wrapper.o extra-y += vdso32.lds CPPFLAGS_vdso32.lds += -P -C -U$(ARCH) +# Disable gcov profiling for VDSO code +GCOV_PROFILE := n + # Force dependency (incbin is bad) $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index 449352dda9c..2a8ddfd12a5 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -22,6 +22,9 @@ obj-y += vdso64_wrapper.o extra-y += vdso64.lds CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) +# Disable gcov profiling for VDSO code +GCOV_PROFILE := n + # Force dependency (incbin is bad) $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 1bc18cdb525..56fe6bc81fe 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -77,7 +77,7 @@ SECTIONS . = ALIGN(PAGE_SIZE); INIT_DATA_SECTION(0x100) - PERCPU(0x100, PAGE_SIZE) + PERCPU_SECTION(0x100) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 3cc95dd0a3a..075ddada491 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -412,6 +412,7 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long struct dcss_segment *seg; int rc, diag_cc; + start_addr = end_addr = 0; seg = kmalloc(sizeof(*seg), GFP_KERNEL | GFP_DMA); if (seg == NULL) { rc = -ENOMEM; @@ -573,6 +574,7 @@ segment_modify_shared (char *name, int do_nonshared) unsigned long start_addr, end_addr, dummy; int rc, diag_cc; + start_addr = end_addr = 0; mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { @@ -681,8 +683,6 @@ void segment_save(char *name) { struct dcss_segment *seg; - int startpfn = 0; - int endpfn = 0; char cmd1[160]; char cmd2[80]; int i, response; @@ -698,8 +698,6 @@ segment_save(char *name) goto out; } - startpfn = seg->start_addr >> PAGE_SHIFT; - endpfn = (seg->end) >> PAGE_SHIFT; sprintf(cmd1, "DEFSEG %s", name); for (i=0; i<seg->segcnt; i++) { sprintf(cmd1+strlen(cmd1), " %lX-%lX %s", diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index ab988135e5c..a0f9e730f26 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -225,33 +225,6 @@ static noinline void do_sigbus(struct pt_regs *regs, long int_code, force_sig_info(SIGBUS, &si, tsk); } -#ifdef CONFIG_S390_EXEC_PROTECT -static noinline int signal_return(struct pt_regs *regs, long int_code, - unsigned long trans_exc_code) -{ - u16 instruction; - int rc; - - rc = __get_user(instruction, (u16 __user *) regs->psw.addr); - - if (!rc && instruction == 0x0a77) { - clear_tsk_thread_flag(current, TIF_PER_TRAP); - if (is_compat_task()) - sys32_sigreturn(); - else - sys_sigreturn(); - } else if (!rc && instruction == 0x0aad) { - clear_tsk_thread_flag(current, TIF_PER_TRAP); - if (is_compat_task()) - sys32_rt_sigreturn(); - else - sys_rt_sigreturn(); - } else - do_sigsegv(regs, int_code, SEGV_MAPERR, trans_exc_code); - return 0; -} -#endif /* CONFIG_S390_EXEC_PROTECT */ - static noinline void do_fault_error(struct pt_regs *regs, long int_code, unsigned long trans_exc_code, int fault) { @@ -259,13 +232,6 @@ static noinline void do_fault_error(struct pt_regs *regs, long int_code, switch (fault) { case VM_FAULT_BADACCESS: -#ifdef CONFIG_S390_EXEC_PROTECT - if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY && - (trans_exc_code & 3) == 0) { - signal_return(regs, int_code, trans_exc_code); - break; - } -#endif /* CONFIG_S390_EXEC_PROTECT */ case VM_FAULT_BADMAP: /* Bad memory access. Check if it is kernel or user space. */ if (regs->psw.mask & PSW_MASK_PSTATE) { @@ -414,11 +380,6 @@ void __kprobes do_dat_exception(struct pt_regs *regs, long pgm_int_code, int access, fault; access = VM_READ | VM_EXEC | VM_WRITE; -#ifdef CONFIG_S390_EXEC_PROTECT - if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY && - (trans_exc_code & 3) == 0) - access = VM_EXEC; -#endif fault = do_exception(regs, access, trans_exc_code); if (unlikely(fault)) do_fault_error(regs, pgm_int_code & 255, trans_exc_code, fault); @@ -491,22 +452,28 @@ static int __init nopfault(char *str) __setup("nopfault", nopfault); -typedef struct { - __u16 refdiagc; - __u16 reffcode; - __u16 refdwlen; - __u16 refversn; - __u64 refgaddr; - __u64 refselmk; - __u64 refcmpmk; - __u64 reserved; -} __attribute__ ((packed, aligned(8))) pfault_refbk_t; +struct pfault_refbk { + u16 refdiagc; + u16 reffcode; + u16 refdwlen; + u16 refversn; + u64 refgaddr; + u64 refselmk; + u64 refcmpmk; + u64 reserved; +} __attribute__ ((packed, aligned(8))); int pfault_init(void) { - pfault_refbk_t refbk = - { 0x258, 0, 5, 2, __LC_CURRENT, 1ULL << 48, 1ULL << 48, - __PF_RES_FIELD }; + struct pfault_refbk refbk = { + .refdiagc = 0x258, + .reffcode = 0, + .refdwlen = 5, + .refversn = 2, + .refgaddr = __LC_CURRENT_PID, + .refselmk = 1ULL << 48, + .refcmpmk = 1ULL << 48, + .reserved = __PF_RES_FIELD }; int rc; if (!MACHINE_IS_VM || pfault_disable) @@ -524,8 +491,12 @@ int pfault_init(void) void pfault_fini(void) { - pfault_refbk_t refbk = - { 0x258, 1, 5, 2, 0ULL, 0ULL, 0ULL, 0ULL }; + struct pfault_refbk refbk = { + .refdiagc = 0x258, + .reffcode = 1, + .refdwlen = 5, + .refversn = 2, + }; if (!MACHINE_IS_VM || pfault_disable) return; @@ -537,11 +508,15 @@ void pfault_fini(void) : : "a" (&refbk), "m" (refbk) : "cc"); } +static DEFINE_SPINLOCK(pfault_lock); +static LIST_HEAD(pfault_list); + static void pfault_interrupt(unsigned int ext_int_code, unsigned int param32, unsigned long param64) { struct task_struct *tsk; __u16 subcode; + pid_t pid; /* * Get the external interruption subcode & pfault @@ -553,44 +528,79 @@ static void pfault_interrupt(unsigned int ext_int_code, if ((subcode & 0xff00) != __SUBCODE_MASK) return; kstat_cpu(smp_processor_id()).irqs[EXTINT_PFL]++; - - /* - * Get the token (= address of the task structure of the affected task). - */ -#ifdef CONFIG_64BIT - tsk = (struct task_struct *) param64; -#else - tsk = (struct task_struct *) param32; -#endif - + if (subcode & 0x0080) { + /* Get the token (= pid of the affected task). */ + pid = sizeof(void *) == 4 ? param32 : param64; + rcu_read_lock(); + tsk = find_task_by_pid_ns(pid, &init_pid_ns); + if (tsk) + get_task_struct(tsk); + rcu_read_unlock(); + if (!tsk) + return; + } else { + tsk = current; + } + spin_lock(&pfault_lock); if (subcode & 0x0080) { /* signal bit is set -> a page has been swapped in by VM */ - if (xchg(&tsk->thread.pfault_wait, -1) != 0) { + if (tsk->thread.pfault_wait == 1) { /* Initial interrupt was faster than the completion * interrupt. pfault_wait is valid. Set pfault_wait * back to zero and wake up the process. This can * safely be done because the task is still sleeping * and can't produce new pfaults. */ tsk->thread.pfault_wait = 0; + list_del(&tsk->thread.list); wake_up_process(tsk); - put_task_struct(tsk); + } else { + /* Completion interrupt was faster than initial + * interrupt. Set pfault_wait to -1 so the initial + * interrupt doesn't put the task to sleep. */ + tsk->thread.pfault_wait = -1; } + put_task_struct(tsk); } else { /* signal bit not set -> a real page is missing. */ - get_task_struct(tsk); - set_task_state(tsk, TASK_UNINTERRUPTIBLE); - if (xchg(&tsk->thread.pfault_wait, 1) != 0) { + if (tsk->thread.pfault_wait == -1) { /* Completion interrupt was faster than the initial - * interrupt (swapped in a -1 for pfault_wait). Set - * pfault_wait back to zero and exit. This can be - * done safely because tsk is running in kernel - * mode and can't produce new pfaults. */ + * interrupt (pfault_wait == -1). Set pfault_wait + * back to zero and exit. */ tsk->thread.pfault_wait = 0; - set_task_state(tsk, TASK_RUNNING); - put_task_struct(tsk); - } else + } else { + /* Initial interrupt arrived before completion + * interrupt. Let the task sleep. */ + tsk->thread.pfault_wait = 1; + list_add(&tsk->thread.list, &pfault_list); + set_task_state(tsk, TASK_UNINTERRUPTIBLE); set_tsk_need_resched(tsk); + } + } + spin_unlock(&pfault_lock); +} + +static int __cpuinit pfault_cpu_notify(struct notifier_block *self, + unsigned long action, void *hcpu) +{ + struct thread_struct *thread, *next; + struct task_struct *tsk; + + switch (action) { + case CPU_DEAD: + case CPU_DEAD_FROZEN: + spin_lock_irq(&pfault_lock); + list_for_each_entry_safe(thread, next, &pfault_list, list) { + thread->pfault_wait = 0; + list_del(&thread->list); + tsk = container_of(thread, struct task_struct, thread); + wake_up_process(tsk); + } + spin_unlock_irq(&pfault_lock); + break; + default: + break; } + return NOTIFY_OK; } static int __init pfault_irq_init(void) @@ -599,22 +609,21 @@ static int __init pfault_irq_init(void) if (!MACHINE_IS_VM) return 0; - /* - * Try to get pfault pseudo page faults going. - */ rc = register_external_interrupt(0x2603, pfault_interrupt); - if (rc) { - pfault_disable = 1; - return rc; - } - if (pfault_init() == 0) - return 0; + if (rc) + goto out_extint; + rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP; + if (rc) + goto out_pfault; + hotcpu_notifier(pfault_cpu_notify, 0); + return 0; - /* Tough luck, no pfault. */ - pfault_disable = 1; +out_pfault: unregister_external_interrupt(0x2603, pfault_interrupt); - return 0; +out_extint: + pfault_disable = 1; + return rc; } early_initcall(pfault_irq_init); -#endif +#endif /* CONFIG_PFAULT */ diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index 639cd21f221..a4d856db915 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -13,7 +13,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *pteptr, pte_t pteval) { pmd_t *pmdp = (pmd_t *) pteptr; - pte_t shadow_pteval = pteval; unsigned long mask; if (!MACHINE_HAS_HPAGE) { @@ -21,18 +20,9 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, mask = pte_val(pteval) & (_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO); pte_val(pteval) = (_SEGMENT_ENTRY + __pa(pteptr)) | mask; - if (mm->context.noexec) { - pteptr += PTRS_PER_PTE; - pte_val(shadow_pteval) = - (_SEGMENT_ENTRY + __pa(pteptr)) | mask; - } } pmd_val(*pmdp) = pte_val(pteval); - if (mm->context.noexec) { - pmdp = get_shadow_table(pmdp); - pmd_val(*pmdp) = pte_val(shadow_pteval); - } } int arch_prepare_hugepage(struct page *page) diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index bb409332a48..dfefc217169 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -175,7 +175,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable) pmd = pmd_offset(pud, address); pte = pte_offset_kernel(pmd, address); if (!enable) { - ptep_invalidate(&init_mm, address, pte); + __ptep_ipte(address, pte); + pte_val(*pte) = _PAGE_TYPE_EMPTY; continue; } *pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW)); diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c index f05edcc3bef..d013ed39743 100644 --- a/arch/s390/mm/pageattr.c +++ b/arch/s390/mm/pageattr.c @@ -28,7 +28,7 @@ static void change_page_attr(unsigned long addr, int numpages, pte = *ptep; pte = set(pte); - ptep_invalidate(&init_mm, addr, ptep); + __ptep_ipte(addr, ptep); *ptep = pte; addr += PAGE_SIZE; } diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index e1850c28cd6..8d433064251 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -40,7 +40,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); static DEFINE_PER_CPU(struct rcu_table_freelist *, rcu_table_freelist); static void __page_table_free(struct mm_struct *mm, unsigned long *table); -static void __crst_table_free(struct mm_struct *mm, unsigned long *table); static struct rcu_table_freelist *rcu_table_freelist_get(struct mm_struct *mm) { @@ -67,7 +66,7 @@ static void rcu_table_freelist_callback(struct rcu_head *head) while (batch->pgt_index > 0) __page_table_free(batch->mm, batch->table[--batch->pgt_index]); while (batch->crst_index < RCU_FREELIST_SIZE) - __crst_table_free(batch->mm, batch->table[batch->crst_index++]); + crst_table_free(batch->mm, batch->table[batch->crst_index++]); free_page((unsigned long) batch); } @@ -125,63 +124,33 @@ static int __init parse_vmalloc(char *arg) } early_param("vmalloc", parse_vmalloc); -unsigned long *crst_table_alloc(struct mm_struct *mm, int noexec) +unsigned long *crst_table_alloc(struct mm_struct *mm) { struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER); if (!page) return NULL; - page->index = 0; - if (noexec) { - struct page *shadow = alloc_pages(GFP_KERNEL, ALLOC_ORDER); - if (!shadow) { - __free_pages(page, ALLOC_ORDER); - return NULL; - } - page->index = page_to_phys(shadow); - } - spin_lock_bh(&mm->context.list_lock); - list_add(&page->lru, &mm->context.crst_list); - spin_unlock_bh(&mm->context.list_lock); return (unsigned long *) page_to_phys(page); } -static void __crst_table_free(struct mm_struct *mm, unsigned long *table) -{ - unsigned long *shadow = get_shadow_table(table); - - if (shadow) - free_pages((unsigned long) shadow, ALLOC_ORDER); - free_pages((unsigned long) table, ALLOC_ORDER); -} - void crst_table_free(struct mm_struct *mm, unsigned long *table) { - struct page *page = virt_to_page(table); - - spin_lock_bh(&mm->context.list_lock); - list_del(&page->lru); - spin_unlock_bh(&mm->context.list_lock); - __crst_table_free(mm, table); + free_pages((unsigned long) table, ALLOC_ORDER); } void crst_table_free_rcu(struct mm_struct *mm, unsigned long *table) { struct rcu_table_freelist *batch; - struct page *page = virt_to_page(table); - spin_lock_bh(&mm->context.list_lock); - list_del(&page->lru); - spin_unlock_bh(&mm->context.list_lock); if (atomic_read(&mm->mm_users) < 2 && cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) { - __crst_table_free(mm, table); + crst_table_free(mm, table); return; } batch = rcu_table_freelist_get(mm); if (!batch) { smp_call_function(smp_sync, NULL, 1); - __crst_table_free(mm, table); + crst_table_free(mm, table); return; } batch->table[--batch->crst_index] = table; @@ -197,7 +166,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long limit) BUG_ON(limit > (1UL << 53)); repeat: - table = crst_table_alloc(mm, mm->context.noexec); + table = crst_table_alloc(mm); if (!table) return -ENOMEM; spin_lock_bh(&mm->page_table_lock); @@ -273,7 +242,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm) unsigned long *table; unsigned long bits; - bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL; + bits = (mm->context.has_pgste) ? 3UL : 1UL; spin_lock_bh(&mm->context.list_lock); page = NULL; if (!list_empty(&mm->context.pgtable_list)) { @@ -329,7 +298,7 @@ void page_table_free(struct mm_struct *mm, unsigned long *table) struct page *page; unsigned long bits; - bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL; + bits = (mm->context.has_pgste) ? 3UL : 1UL; bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long); page = pfn_to_page(__pa(table) >> PAGE_SHIFT); spin_lock_bh(&mm->context.list_lock); @@ -366,7 +335,7 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table) page_table_free(mm, table); return; } - bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL; + bits = (mm->context.has_pgste) ? 3UL : 1UL; bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long); page = pfn_to_page(__pa(table) >> PAGE_SHIFT); spin_lock_bh(&mm->context.list_lock); @@ -379,25 +348,6 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table) rcu_table_freelist_finish(); } -void disable_noexec(struct mm_struct *mm, struct task_struct *tsk) -{ - struct page *page; - - spin_lock_bh(&mm->context.list_lock); - /* Free shadow region and segment tables. */ - list_for_each_entry(page, &mm->context.crst_list, lru) - if (page->index) { - free_pages((unsigned long) page->index, ALLOC_ORDER); - page->index = 0; - } - /* "Free" second halves of page tables. */ - list_for_each_entry(page, &mm->context.pgtable_list, lru) - page->flags &= ~SECOND_HALVES; - spin_unlock_bh(&mm->context.list_lock); - mm->context.noexec = 0; - update_mm(mm, tsk); -} - /* * switch on pgstes for its userspace process (for kvm) */ diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 34c43f23b28..8c1970d1dd9 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -95,7 +95,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) pu_dir = vmem_pud_alloc(); if (!pu_dir) goto out; - pgd_populate_kernel(&init_mm, pg_dir, pu_dir); + pgd_populate(&init_mm, pg_dir, pu_dir); } pu_dir = pud_offset(pg_dir, address); @@ -103,7 +103,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) pm_dir = vmem_pmd_alloc(); if (!pm_dir) goto out; - pud_populate_kernel(&init_mm, pu_dir, pm_dir); + pud_populate(&init_mm, pu_dir, pm_dir); } pte = mk_pte_phys(address, __pgprot(ro ? _PAGE_RO : 0)); @@ -123,7 +123,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) pt_dir = vmem_pte_alloc(); if (!pt_dir) goto out; - pmd_populate_kernel(&init_mm, pm_dir, pt_dir); + pmd_populate(&init_mm, pm_dir, pt_dir); } pt_dir = pte_offset_kernel(pm_dir, address); @@ -159,7 +159,7 @@ static void vmem_remove_range(unsigned long start, unsigned long size) continue; if (pmd_huge(*pm_dir)) { - pmd_clear_kernel(pm_dir); + pmd_clear(pm_dir); address += HPAGE_SIZE - PAGE_SIZE; continue; } @@ -192,7 +192,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node) pu_dir = vmem_pud_alloc(); if (!pu_dir) goto out; - pgd_populate_kernel(&init_mm, pg_dir, pu_dir); + pgd_populate(&init_mm, pg_dir, pu_dir); } pu_dir = pud_offset(pg_dir, address); @@ -200,7 +200,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node) pm_dir = vmem_pmd_alloc(); if (!pm_dir) goto out; - pud_populate_kernel(&init_mm, pu_dir, pm_dir); + pud_populate(&init_mm, pu_dir, pm_dir); } pm_dir = pmd_offset(pu_dir, address); @@ -208,7 +208,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node) pt_dir = vmem_pte_alloc(); if (!pt_dir) goto out; - pmd_populate_kernel(&init_mm, pm_dir, pt_dir); + pmd_populate(&init_mm, pm_dir, pt_dir); } pt_dir = pte_offset_kernel(pm_dir, address); diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c index 33cbd373cce..053caa0fd27 100644 --- a/arch/s390/oprofile/hwsampler.c +++ b/arch/s390/oprofile/hwsampler.c @@ -5,6 +5,7 @@ * Author: Heinz Graalfs <graalfs@de.ibm.com> */ +#include <linux/kernel_stat.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/smp.h> @@ -674,17 +675,11 @@ int hwsampler_activate(unsigned int cpu) static void hws_ext_handler(unsigned int ext_int_code, unsigned int param32, unsigned long param64) { - int cpu; struct hws_cpu_buffer *cb; - cpu = smp_processor_id(); - cb = &per_cpu(sampler_cpu_buffer, cpu); - - atomic_xchg( - &cb->ext_params, - atomic_read(&cb->ext_params) - | S390_lowcore.ext_params); - + kstat_cpu(smp_processor_id()).irqs[EXTINT_CPM]++; + cb = &__get_cpu_var(sampler_cpu_buffer); + atomic_xchg(&cb->ext_params, atomic_read(&cb->ext_params) | param32); if (hws_wq) queue_work(hws_wq, &cb->worker); } @@ -764,7 +759,7 @@ static int worker_check_error(unsigned int cpu, int ext_params) if (!sdbt || !*sdbt) return -EINVAL; - if (ext_params & EI_IEA) + if (ext_params & EI_PRA) cb->req_alert++; if (ext_params & EI_LSDA) @@ -1009,7 +1004,7 @@ int hwsampler_deallocate() if (hws_state != HWS_STOPPED) goto deallocate_exit; - smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */ + ctl_clear_bit(0, 5); /* set bit 58 CR0 off */ deallocate_sdbt(); hws_state = HWS_DEALLOCATED; @@ -1123,7 +1118,7 @@ int hwsampler_shutdown() mutex_lock(&hws_sem); if (hws_state == HWS_STOPPED) { - smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */ + ctl_clear_bit(0, 5); /* set bit 58 CR0 off */ deallocate_sdbt(); } if (hws_wq) { @@ -1198,7 +1193,7 @@ start_all_exit: hws_oom = 1; hws_flush_all = 0; /* now let them in, 1407 CPUMF external interrupts */ - smp_ctl_set_bit(0, 5); /* set CR0 bit 58 */ + ctl_set_bit(0, 5); /* set CR0 bit 58 */ return 0; } diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S index af4d46187a7..731c10ce67b 100644 --- a/arch/sh/kernel/vmlinux.lds.S +++ b/arch/sh/kernel/vmlinux.lds.S @@ -66,7 +66,7 @@ SECTIONS __machvec_end = .; } - PERCPU(L1_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) /* * .exit.text is discarded at runtime, not link time, to deal with diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 92b557afe53..c0220759003 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -108,7 +108,7 @@ SECTIONS __sun4v_2insn_patch_end = .; } - PERCPU(SMP_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(SMP_CACHE_BYTES) . = ALIGN(PAGE_SIZE); __init_end = .; diff --git a/arch/tile/kernel/vmlinux.lds.S b/arch/tile/kernel/vmlinux.lds.S index 38f64fafdc1..631f10de12f 100644 --- a/arch/tile/kernel/vmlinux.lds.S +++ b/arch/tile/kernel/vmlinux.lds.S @@ -60,7 +60,7 @@ SECTIONS . = ALIGN(PAGE_SIZE); VMLINUX_SYMBOL(_sinitdata) = .; INIT_DATA_SECTION(16) :data =0 - PERCPU(L2_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L2_CACHE_BYTES) . = ALIGN(PAGE_SIZE); VMLINUX_SYMBOL(_einitdata) = .; diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86 index a9da516a527..795ea8e869f 100644 --- a/arch/um/Kconfig.x86 +++ b/arch/um/Kconfig.x86 @@ -29,10 +29,10 @@ config X86_64 def_bool 64BIT config RWSEM_XCHGADD_ALGORITHM - def_bool X86_XADD + def_bool X86_XADD && 64BIT config RWSEM_GENERIC_SPINLOCK - def_bool !X86_XADD + def_bool !RWSEM_XCHGADD_ALGORITHM config 3_LEVEL_PGTABLES bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S index 34bede8aad4..4938de5512d 100644 --- a/arch/um/include/asm/common.lds.S +++ b/arch/um/include/asm/common.lds.S @@ -42,7 +42,7 @@ INIT_SETUP(0) } - PERCPU(32, 32) + PERCPU_SECTION(32) .initcall.init : { INIT_CALLS diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h index 12d55e773eb..48142971b25 100644 --- a/arch/x86/include/asm/linkage.h +++ b/arch/x86/include/asm/linkage.h @@ -8,11 +8,6 @@ #ifdef CONFIG_X86_32 #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) -/* - * For 32-bit UML - mark functions implemented in assembly that use - * regparm input parameters: - */ -#define asmregparm __attribute__((regparm(3))) /* * Make sure the compiler doesn't do anything stupid with the diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 53278b0dfdf..a0a9779084d 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -509,6 +509,11 @@ do { \ * it in software. The address used in the cmpxchg16 instruction must be * aligned to a 16 byte boundary. */ +#ifdef CONFIG_SMP +#define CMPXCHG16B_EMU_CALL "call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP3 +#else +#define CMPXCHG16B_EMU_CALL "call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP2 +#endif #define percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2) \ ({ \ char __ret; \ @@ -517,7 +522,7 @@ do { \ typeof(o2) __o2 = o2; \ typeof(o2) __n2 = n2; \ typeof(o2) __dummy; \ - alternative_io("call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP4, \ + alternative_io(CMPXCHG16B_EMU_CALL, \ "cmpxchg16b " __percpu_prefix "(%%rsi)\n\tsetz %0\n\t", \ X86_FEATURE_CX16, \ ASM_OUTPUT2("=a"(__ret), "=d"(__dummy)), \ diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 9488dcff7ae..e5293394b54 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -676,7 +676,7 @@ void mask_ioapic_entries(void) int apic, pin; for (apic = 0; apic < nr_ioapics; apic++) { - if (ioapics[apic].saved_registers) + if (!ioapics[apic].saved_registers) continue; for (pin = 0; pin < ioapics[apic].nr_registers; pin++) { @@ -699,7 +699,7 @@ int restore_ioapic_entries(void) int apic, pin; for (apic = 0; apic < nr_ioapics; apic++) { - if (ioapics[apic].saved_registers) + if (!ioapics[apic].saved_registers) continue; for (pin = 0; pin < ioapics[apic].nr_registers; pin++) diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index f65e5b521db..807c2a2b80f 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -1363,7 +1363,7 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, * We must return the syscall number to actually look up in the table. * This can be -1L to skip running any syscall at all. */ -asmregparm long syscall_trace_enter(struct pt_regs *regs) +long syscall_trace_enter(struct pt_regs *regs) { long ret = 0; @@ -1408,7 +1408,7 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs) return ret ?: regs->orig_ax; } -asmregparm void syscall_trace_leave(struct pt_regs *regs) +void syscall_trace_leave(struct pt_regs *regs) { bool step; diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 49927a863cc..61682f0ac26 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -326,7 +326,7 @@ SECTIONS } #if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) - PERCPU(INTERNODE_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(INTERNODE_CACHE_BYTES) #endif . = ALIGN(PAGE_SIZE); diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index a2820065927..88ecea3facb 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -155,7 +155,7 @@ SECTIONS INIT_RAM_FS } - PERCPU(XCHAL_ICACHE_LINESIZE, PAGE_SIZE) + PERCPU_SECTION(XCHAL_ICACHE_LINESIZE) /* We need this dummy segment here */ |