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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-01-03 22:55:21 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-01-03 22:55:21 +0000
commit04228460a3ded723b2da09141c76c45ddd712caf (patch)
treedb7b9143b150ead1e9fec10760a1d5ff4045a5e7 /arch
parent7c0ab43e6ab09d72dc8dbac2521b2f819ccc4026 (diff)
parent24c78557741395e038e83f25367cf2bfd7f582b8 (diff)
Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/common/it8152.c1
-rw-r--r--arch/arm/include/asm/hardware/it8152.h1
-rw-r--r--arch/arm/mach-at91/include/mach/at91_mci.h2
-rw-r--r--arch/arm/mach-ixp4xx/common-pci.c2
-rw-r--r--arch/arm/mach-pxa/sleep.S4
-rw-r--r--arch/arm/mach-s3c2412/Kconfig7
-rw-r--r--arch/arm/mach-s3c2412/Makefile3
-rw-r--r--arch/arm/mach-s3c2416/Kconfig1
-rw-r--r--arch/arm/mach-s5pv210/mach-aquila.c6
-rw-r--r--arch/arm/mach-s5pv210/mach-goni.c6
-rw-r--r--arch/arm/mach-shmobile/include/mach/entry-macro.S30
-rw-r--r--arch/arm/mach-shmobile/include/mach/vmalloc.h2
-rw-r--r--arch/arm/plat-s3c24xx/Kconfig2
-rw-r--r--arch/mips/mm/sc-mips.c4
-rw-r--r--arch/mn10300/kernel/time.c10
-rw-r--r--arch/powerpc/platforms/52xx/mpc52xx_gpt.c1
-rw-r--r--arch/sh/boards/mach-se/7206/irq.c2
-rw-r--r--arch/sh/kernel/cpu/sh2a/clock-sh7201.c2
-rw-r--r--arch/sh/kernel/cpu/sh4/clock-sh4-202.c3
-rw-r--r--arch/tile/include/asm/signal.h2
-rw-r--r--arch/tile/kernel/compat_signal.c6
-rw-r--r--arch/tile/kernel/intvec_32.S24
-rw-r--r--arch/tile/kernel/process.c8
-rw-r--r--arch/tile/kernel/signal.c10
-rw-r--r--arch/x86/boot/compressed/misc.c2
-rw-r--r--arch/x86/include/asm/e820.h3
-rw-r--r--arch/x86/kernel/Makefile1
-rw-r--r--arch/x86/kernel/apic/apic.c8
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
-rw-r--r--arch/x86/kernel/apic/probe_64.c7
-rw-r--r--arch/x86/kernel/head_32.S12
-rw-r--r--arch/x86/kernel/hpet.c26
-rw-r--r--arch/x86/kernel/microcode_intel.c16
-rw-r--r--arch/x86/kernel/resource.c48
-rw-r--r--arch/x86/kernel/setup.c18
-rw-r--r--arch/x86/kernel/xsave.c3
-rw-r--r--arch/x86/pci/i386.c18
-rw-r--r--arch/x86/vdso/Makefile4
38 files changed, 219 insertions, 90 deletions
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c
index 1bec96e8519..42ff90b46df 100644
--- a/arch/arm/common/it8152.c
+++ b/arch/arm/common/it8152.c
@@ -352,3 +352,4 @@ struct pci_bus * __init it8152_pci_scan_bus(int nr, struct pci_sys_data *sys)
return pci_scan_bus(nr, &it8152_ops, sys);
}
+EXPORT_SYMBOL(dma_set_coherent_mask);
diff --git a/arch/arm/include/asm/hardware/it8152.h b/arch/arm/include/asm/hardware/it8152.h
index 21fa272301f..b2f95c72287 100644
--- a/arch/arm/include/asm/hardware/it8152.h
+++ b/arch/arm/include/asm/hardware/it8152.h
@@ -76,6 +76,7 @@ extern unsigned long it8152_base_address;
IT8152_PD_IRQ(0) Audio controller (ACR)
*/
#define IT8152_IRQ(x) (IRQ_BOARD_START + (x))
+#define IT8152_LAST_IRQ (IRQ_BOARD_START + 40)
/* IRQ-sources in 3 groups - local devices, LPC (serial), and external PCI */
#define IT8152_LD_IRQ_COUNT 9
diff --git a/arch/arm/mach-at91/include/mach/at91_mci.h b/arch/arm/mach-at91/include/mach/at91_mci.h
index 57f8ee15494..27ac6f550fe 100644
--- a/arch/arm/mach-at91/include/mach/at91_mci.h
+++ b/arch/arm/mach-at91/include/mach/at91_mci.h
@@ -74,6 +74,8 @@
#define AT91_MCI_TRTYP_BLOCK (0 << 19)
#define AT91_MCI_TRTYP_MULTIPLE (1 << 19)
#define AT91_MCI_TRTYP_STREAM (2 << 19)
+#define AT91_MCI_TRTYP_SDIO_BYTE (4 << 19)
+#define AT91_MCI_TRTYP_SDIO_BLOCK (5 << 19)
#define AT91_MCI_BLKR 0x18 /* Block Register */
#define AT91_MCI_BLKR_BCNT(n) ((0xffff & (n)) << 0) /* Block count */
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index 24498a932ba..a54b3db8036 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -513,4 +513,4 @@ int dma_set_coherent_mask(struct device *dev, u64 mask)
EXPORT_SYMBOL(ixp4xx_pci_read);
EXPORT_SYMBOL(ixp4xx_pci_write);
-
+EXPORT_SYMBOL(dma_set_coherent_mask);
diff --git a/arch/arm/mach-pxa/sleep.S b/arch/arm/mach-pxa/sleep.S
index 52c30b01a67..ae008110db4 100644
--- a/arch/arm/mach-pxa/sleep.S
+++ b/arch/arm/mach-pxa/sleep.S
@@ -353,8 +353,8 @@ resume_turn_on_mmu:
@ Let us ensure we jump to resume_after_mmu only when the mcr above
@ actually took effect. They call it the "cpwait" operation.
- mrc p15, 0, r1, c2, c0, 0 @ queue a dependency on CP15
- sub pc, r2, r1, lsr #32 @ jump to virtual addr
+ mrc p15, 0, r0, c2, c0, 0 @ queue a dependency on CP15
+ sub pc, r2, r0, lsr #32 @ jump to virtual addr
nop
nop
nop
diff --git a/arch/arm/mach-s3c2412/Kconfig b/arch/arm/mach-s3c2412/Kconfig
index fa2e5bffbb8..6983cb4d4ca 100644
--- a/arch/arm/mach-s3c2412/Kconfig
+++ b/arch/arm/mach-s3c2412/Kconfig
@@ -28,9 +28,16 @@ config S3C2412_DMA
config S3C2412_PM
bool
+ select S3C2412_PM_SLEEP
help
Internal config node to apply S3C2412 power management
+config S3C2412_PM_SLEEP
+ bool
+ help
+ Internal config node to apply sleep for S3C2412 power management.
+ Can be selected by another SoCs with similar sleep procedure.
+
# Note, the S3C2412 IOtiming support is in plat-s3c24xx
config S3C2412_CPUFREQ
diff --git a/arch/arm/mach-s3c2412/Makefile b/arch/arm/mach-s3c2412/Makefile
index 530ec46cbae..6c48a91ea39 100644
--- a/arch/arm/mach-s3c2412/Makefile
+++ b/arch/arm/mach-s3c2412/Makefile
@@ -14,7 +14,8 @@ obj-$(CONFIG_CPU_S3C2412) += irq.o
obj-$(CONFIG_CPU_S3C2412) += clock.o
obj-$(CONFIG_CPU_S3C2412) += gpio.o
obj-$(CONFIG_S3C2412_DMA) += dma.o
-obj-$(CONFIG_S3C2412_PM) += pm.o sleep.o
+obj-$(CONFIG_S3C2412_PM) += pm.o
+obj-$(CONFIG_S3C2412_PM_SLEEP) += sleep.o
obj-$(CONFIG_S3C2412_CPUFREQ) += cpu-freq.o
# Machine support
diff --git a/arch/arm/mach-s3c2416/Kconfig b/arch/arm/mach-s3c2416/Kconfig
index 27b3e7c9d61..df8d14974c9 100644
--- a/arch/arm/mach-s3c2416/Kconfig
+++ b/arch/arm/mach-s3c2416/Kconfig
@@ -27,6 +27,7 @@ config S3C2416_DMA
config S3C2416_PM
bool
+ select S3C2412_PM_SLEEP
help
Internal config node to apply S3C2416 power management
diff --git a/arch/arm/mach-s5pv210/mach-aquila.c b/arch/arm/mach-s5pv210/mach-aquila.c
index 28677caf361..461aa035afc 100644
--- a/arch/arm/mach-s5pv210/mach-aquila.c
+++ b/arch/arm/mach-s5pv210/mach-aquila.c
@@ -378,6 +378,12 @@ static struct max8998_regulator_data aquila_regulators[] = {
static struct max8998_platform_data aquila_max8998_pdata = {
.num_regulators = ARRAY_SIZE(aquila_regulators),
.regulators = aquila_regulators,
+ .buck1_set1 = S5PV210_GPH0(3),
+ .buck1_set2 = S5PV210_GPH0(4),
+ .buck2_set3 = S5PV210_GPH0(5),
+ .buck1_max_voltage1 = 1200000,
+ .buck1_max_voltage2 = 1200000,
+ .buck2_max_voltage = 1200000,
};
#endif
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index b1dcf964a76..e22d5112fd4 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -518,6 +518,12 @@ static struct max8998_regulator_data goni_regulators[] = {
static struct max8998_platform_data goni_max8998_pdata = {
.num_regulators = ARRAY_SIZE(goni_regulators),
.regulators = goni_regulators,
+ .buck1_set1 = S5PV210_GPH0(3),
+ .buck1_set2 = S5PV210_GPH0(4),
+ .buck2_set3 = S5PV210_GPH0(5),
+ .buck1_max_voltage1 = 1200000,
+ .buck1_max_voltage2 = 1200000,
+ .buck2_max_voltage = 1200000,
};
#endif
diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S
index a285d13c741..f428c4db2b6 100644
--- a/arch/arm/mach-shmobile/include/mach/entry-macro.S
+++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S
@@ -1,4 +1,5 @@
/*
+ * Copyright (C) 2010 Magnus Damm
* Copyright (C) 2008 Renesas Solutions Corp.
*
* This program is free software; you can redistribute it and/or modify
@@ -14,24 +15,45 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <mach/hardware.h>
#include <mach/irqs.h>
+#define INTCA_BASE 0xe6980000
+#define INTFLGA_OFFS 0x00000018 /* accept pending interrupt */
+#define INTEVTA_OFFS 0x00000020 /* vector number of accepted interrupt */
+#define INTLVLA_OFFS 0x00000030 /* priority level of accepted interrupt */
+#define INTLVLB_OFFS 0x00000034 /* previous priority level */
+
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
- ldr \base, =INTFLGA
+ ldr \base, =INTCA_BASE
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \irqnr, [\base]
+ /* The single INTFLGA read access below results in the following:
+ *
+ * 1. INTLVLB is updated with old priority value from INTLVLA
+ * 2. Highest priority interrupt is accepted
+ * 3. INTLVLA is updated to contain priority of accepted interrupt
+ * 4. Accepted interrupt vector is stored in INTFLGA and INTEVTA
+ */
+ ldr \irqnr, [\base, #INTFLGA_OFFS]
+
+ /* Restore INTLVLA with the value saved in INTLVLB.
+ * This is required to support interrupt priorities properly.
+ */
+ ldrb \tmp, [\base, #INTLVLB_OFFS]
+ strb \tmp, [\base, #INTLVLA_OFFS]
+
+ /* Handle invalid vector number case */
cmp \irqnr, #0
beq 1000f
- /* intevt to irq number */
+
+ /* Convert vector to irq number, same as the evt2irq() macro */
lsr \irqnr, \irqnr, #0x5
subs \irqnr, \irqnr, #16
diff --git a/arch/arm/mach-shmobile/include/mach/vmalloc.h b/arch/arm/mach-shmobile/include/mach/vmalloc.h
index 4aecf6e3a85..2b8fd8b942f 100644
--- a/arch/arm/mach-shmobile/include/mach/vmalloc.h
+++ b/arch/arm/mach-shmobile/include/mach/vmalloc.h
@@ -2,6 +2,6 @@
#define __ASM_MACH_VMALLOC_H
/* Vmalloc at ... - 0xe5ffffff */
-#define VMALLOC_END 0xe6000000
+#define VMALLOC_END 0xe6000000UL
#endif /* __ASM_MACH_VMALLOC_H */
diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index 5a27b1b538f..eb105e61c74 100644
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -8,7 +8,7 @@ config PLAT_S3C24XX
default y
select NO_IOPORT
select ARCH_REQUIRE_GPIOLIB
- select S3C_DEVICE_NAND
+ select S3C_DEV_NAND
select S3C_GPIO_CFG_S3C24XX
help
Base platform code for any Samsung S3C24XX device
diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c
index 505fecad468..9cca8de0054 100644
--- a/arch/mips/mm/sc-mips.c
+++ b/arch/mips/mm/sc-mips.c
@@ -68,6 +68,9 @@ static struct bcache_ops mips_sc_ops = {
*/
static inline int mips_sc_is_activated(struct cpuinfo_mips *c)
{
+ unsigned int config2 = read_c0_config2();
+ unsigned int tmp;
+
/* Check the bypass bit (L2B) */
switch (c->cputype) {
case CPU_34K:
@@ -83,6 +86,7 @@ static inline int mips_sc_is_activated(struct cpuinfo_mips *c)
c->scache.linesz = 2 << tmp;
else
return 0;
+ return 1;
}
static inline int __init mips_sc_probe(void)
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c
index f860a340acc..75da468090b 100644
--- a/arch/mn10300/kernel/time.c
+++ b/arch/mn10300/kernel/time.c
@@ -40,21 +40,17 @@ unsigned long long sched_clock(void)
unsigned long long ll;
unsigned l[2];
} tsc64, result;
- unsigned long tsc, tmp;
+ unsigned long tmp;
unsigned product[3]; /* 96-bit intermediate value */
/* cnt32_to_63() is not safe with preemption */
preempt_disable();
- /* read the TSC value
- */
- tsc = get_cycles();
-
- /* expand to 64-bits.
+ /* expand the tsc to 64-bits.
* - sched_clock() must be called once a minute or better or the
* following will go horribly wrong - see cnt32_to_63()
*/
- tsc64.ll = cnt32_to_63(tsc) & 0x7fffffffffffffffULL;
+ tsc64.ll = cnt32_to_63(get_cycles()) & 0x7fffffffffffffffULL;
preempt_enable();
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index fea833e18ad..e0d703c7fdf 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -63,6 +63,7 @@
#include <linux/of_gpio.h>
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/fs.h>
#include <linux/watchdog.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
diff --git a/arch/sh/boards/mach-se/7206/irq.c b/arch/sh/boards/mach-se/7206/irq.c
index d961949600f..9070d7e6070 100644
--- a/arch/sh/boards/mach-se/7206/irq.c
+++ b/arch/sh/boards/mach-se/7206/irq.c
@@ -140,7 +140,7 @@ void __init init_se7206_IRQ(void)
make_se7206_irq(IRQ1_IRQ); /* ATA */
make_se7206_irq(IRQ3_IRQ); /* SLOT / PCM */
- __raw_writew(__raw_readw(INTC_ICR1) | 0x000b, INTC_ICR); /* ICR1 */
+ __raw_writew(__raw_readw(INTC_ICR1) | 0x000b, INTC_ICR1); /* ICR1 */
/* FPGA System register setup*/
__raw_writew(0x0000,INTSTS0); /* Clear INTSTS0 */
diff --git a/arch/sh/kernel/cpu/sh2a/clock-sh7201.c b/arch/sh/kernel/cpu/sh2a/clock-sh7201.c
index b26264dc2ae..c509c40cba4 100644
--- a/arch/sh/kernel/cpu/sh2a/clock-sh7201.c
+++ b/arch/sh/kernel/cpu/sh2a/clock-sh7201.c
@@ -34,7 +34,7 @@ static const int pfc_divisors[]={1,2,3,4,6,8,12};
static void master_clk_init(struct clk *clk)
{
- return 10000000 * PLL2 * pll1rate[(__raw_readw(FREQCR) >> 8) & 0x0007];
+ clk->rate = 10000000 * PLL2 * pll1rate[(__raw_readw(FREQCR) >> 8) & 0x0007];
}
static struct clk_ops sh7201_master_clk_ops = {
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
index b601fa3978d..6282a839e08 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
@@ -81,8 +81,7 @@ static void shoc_clk_init(struct clk *clk)
for (i = 0; i < ARRAY_SIZE(frqcr3_divisors); i++) {
int divisor = frqcr3_divisors[i];
- if (clk->ops->set_rate(clk, clk->parent->rate /
- divisor, 0) == 0)
+ if (clk->ops->set_rate(clk, clk->parent->rate / divisor) == 0)
break;
}
diff --git a/arch/tile/include/asm/signal.h b/arch/tile/include/asm/signal.h
index c1ee1d61d44..81d92a45cd4 100644
--- a/arch/tile/include/asm/signal.h
+++ b/arch/tile/include/asm/signal.h
@@ -25,7 +25,7 @@
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
struct pt_regs;
-int restore_sigcontext(struct pt_regs *, struct sigcontext __user *, long *);
+int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
int setup_sigcontext(struct sigcontext __user *, struct pt_regs *);
void do_signal(struct pt_regs *regs);
#endif
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index 543d6a33aa2..dbb0dfc7bec 100644
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -290,12 +290,12 @@ long compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
return ret;
}
+/* The assembly shim for this function arranges to ignore the return value. */
long compat_sys_rt_sigreturn(struct pt_regs *regs)
{
struct compat_rt_sigframe __user *frame =
(struct compat_rt_sigframe __user *) compat_ptr(regs->sp);
sigset_t set;
- long r0;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -308,13 +308,13 @@ long compat_sys_rt_sigreturn(struct pt_regs *regs)
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL, regs) != 0)
goto badframe;
- return r0;
+ return 0;
badframe:
force_sig(SIGSEGV, current);
diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S
index f5821626247..5eed4a02bf6 100644
--- a/arch/tile/kernel/intvec_32.S
+++ b/arch/tile/kernel/intvec_32.S
@@ -1342,8 +1342,8 @@ handle_syscall:
lw r20, r20
/* Jump to syscall handler. */
- jalr r20; .Lhandle_syscall_link:
- FEEDBACK_REENTER(handle_syscall)
+ jalr r20
+.Lhandle_syscall_link: /* value of "lr" after "jalr r20" above */
/*
* Write our r0 onto the stack so it gets restored instead
@@ -1352,6 +1352,9 @@ handle_syscall:
PTREGS_PTR(r29, PTREGS_OFFSET_REG(0))
sw r29, r0
+.Lsyscall_sigreturn_skip:
+ FEEDBACK_REENTER(handle_syscall)
+
/* Do syscall trace again, if requested. */
lw r30, r31
andi r30, r30, _TIF_SYSCALL_TRACE
@@ -1536,9 +1539,24 @@ STD_ENTRY_LOCAL(bad_intr)
}; \
STD_ENDPROC(_##x)
+/*
+ * Special-case sigreturn to not write r0 to the stack on return.
+ * This is technically more efficient, but it also avoids difficulties
+ * in the 64-bit OS when handling 32-bit compat code, since we must not
+ * sign-extend r0 for the sigreturn return-value case.
+ */
+#define PTREGS_SYSCALL_SIGRETURN(x, reg) \
+ STD_ENTRY(_##x); \
+ addli lr, lr, .Lsyscall_sigreturn_skip - .Lhandle_syscall_link; \
+ { \
+ PTREGS_PTR(reg, PTREGS_OFFSET_BASE); \
+ j x \
+ }; \
+ STD_ENDPROC(_##x)
+
PTREGS_SYSCALL(sys_execve, r3)
PTREGS_SYSCALL(sys_sigaltstack, r2)
-PTREGS_SYSCALL(sys_rt_sigreturn, r0)
+PTREGS_SYSCALL_SIGRETURN(sys_rt_sigreturn, r0)
PTREGS_SYSCALL(sys_cmpxchg_badaddr, r1)
/* Save additional callee-saves to pt_regs, put address in r4 and jump. */
diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index 8430f45daea..e90eb53173b 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -212,6 +212,13 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
childregs->sp = sp; /* override with new user stack pointer */
/*
+ * If CLONE_SETTLS is set, set "tp" in the new task to "r4",
+ * which is passed in as arg #5 to sys_clone().
+ */
+ if (clone_flags & CLONE_SETTLS)
+ childregs->tp = regs->regs[4];
+
+ /*
* Copy the callee-saved registers from the passed pt_regs struct
* into the context-switch callee-saved registers area.
* This way when we start the interrupt-return sequence, the
@@ -539,6 +546,7 @@ struct task_struct *__sched _switch_to(struct task_struct *prev,
return __switch_to(prev, next, next_current_ksp0(next));
}
+/* Note there is an implicit fifth argument if (clone_flags & CLONE_SETTLS). */
SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
void __user *, parent_tidptr, void __user *, child_tidptr,
struct pt_regs *, regs)
diff --git a/arch/tile/kernel/signal.c b/arch/tile/kernel/signal.c
index 757407e3669..1260321155f 100644
--- a/arch/tile/kernel/signal.c
+++ b/arch/tile/kernel/signal.c
@@ -52,7 +52,7 @@ SYSCALL_DEFINE3(sigaltstack, const stack_t __user *, uss,
*/
int restore_sigcontext(struct pt_regs *regs,
- struct sigcontext __user *sc, long *pr0)
+ struct sigcontext __user *sc)
{
int err = 0;
int i;
@@ -75,17 +75,15 @@ int restore_sigcontext(struct pt_regs *regs,
regs->faultnum = INT_SWINT_1_SIGRETURN;
- err |= __get_user(*pr0, &sc->gregs[0]);
return err;
}
-/* sigreturn() returns long since it restores r0 in the interrupted code. */
+/* The assembly shim for this function arranges to ignore the return value. */
SYSCALL_DEFINE1(rt_sigreturn, struct pt_regs *, regs)
{
struct rt_sigframe __user *frame =
(struct rt_sigframe __user *)(regs->sp);
sigset_t set;
- long r0;
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -98,13 +96,13 @@ SYSCALL_DEFINE1(rt_sigreturn, struct pt_regs *, regs)
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
goto badframe;
- return r0;
+ return 0;
badframe:
force_sig(SIGSEGV, current);
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 23f315c9f21..325c05294fc 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -355,7 +355,7 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
if (heap > 0x3fffffffffffUL)
error("Destination address too large");
#else
- if (heap > ((-__PAGE_OFFSET-(512<<20)-1) & 0x7fffffff))
+ if (heap > ((-__PAGE_OFFSET-(128<<20)-1) & 0x7fffffff))
error("Destination address too large");
#endif
#ifndef CONFIG_RELOCATABLE
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 5be1542fbfa..e99d55d74df 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -72,6 +72,9 @@ struct e820map {
#define BIOS_BEGIN 0x000a0000
#define BIOS_END 0x00100000
+#define BIOS_ROM_BASE 0xffe00000
+#define BIOS_ROM_END 0xffffffff
+
#ifdef __KERNEL__
/* see comment in arch/x86/kernel/e820.c */
extern struct e820map e820;
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 9e13763b609..1e994754d32 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -45,6 +45,7 @@ obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
obj-y += tsc.o io_delay.o rtc.o
obj-y += pci-iommu_table.o
+obj-y += resource.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
obj-y += process.o
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3f838d53739..78218135b48 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1389,6 +1389,14 @@ void __cpuinit end_local_APIC_setup(void)
setup_apic_nmi_watchdog(NULL);
apic_pm_activate();
+
+ /*
+ * Now that local APIC setup is completed for BP, configure the fault
+ * handling for interrupt remapping.
+ */
+ if (!smp_processor_id() && intr_remapping_enabled)
+ enable_drhd_fault_handling();
+
}
#ifdef CONFIG_X86_X2APIC
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 7cc0a721f62..fadcd743a74 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2430,13 +2430,12 @@ static void ack_apic_level(struct irq_data *data)
{
struct irq_cfg *cfg = data->chip_data;
int i, do_unmask_irq = 0, irq = data->irq;
- struct irq_desc *desc = irq_to_desc(irq);
unsigned long v;
irq_complete_move(cfg);
#ifdef CONFIG_GENERIC_PENDING_IRQ
/* If we are moving the irq we need to mask it */
- if (unlikely(desc->status & IRQ_MOVE_PENDING)) {
+ if (unlikely(irq_to_desc(irq)->status & IRQ_MOVE_PENDING)) {
do_unmask_irq = 1;
mask_ioapic(cfg);
}
@@ -3413,6 +3412,7 @@ dmar_msi_set_affinity(struct irq_data *data, const struct cpumask *mask,
msg.data |= MSI_DATA_VECTOR(cfg->vector);
msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
msg.address_lo |= MSI_ADDR_DEST_ID(dest);
+ msg.address_hi = MSI_ADDR_BASE_HI | MSI_ADDR_EXT_DEST_ID(dest);
dmar_msi_write(irq, &msg);
diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c
index f9e4e6a5407..d8c4a6feb28 100644
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -79,13 +79,6 @@ void __init default_setup_apic_routing(void)
/* need to update phys_pkg_id */
apic->phys_pkg_id = apicid_phys_pkg_id;
}
-
- /*
- * Now that apic routing model is selected, configure the
- * fault handling for intr remapping.
- */
- if (intr_remapping_enabled)
- enable_drhd_fault_handling();
}
/* Same for both flat and physical. */
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index f0bea76f6ea..c0dbd9ac24f 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -60,16 +60,18 @@
#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
#endif
+/* Number of possible pages in the lowmem region */
+LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
+
/* Enough space to fit pagetables for the low memory linear map */
-MAPPING_BEYOND_END = \
- PAGE_TABLE_SIZE(((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT) << PAGE_SHIFT
+MAPPING_BEYOND_END = PAGE_TABLE_SIZE(LOWMEM_PAGES) << PAGE_SHIFT
/*
* Worst-case size of the kernel mapping we need to make:
- * the worst-case size of the kernel itself, plus the extra we need
- * to map for the linear map.
+ * a relocatable kernel can live anywhere in lowmem, so we need to be able
+ * to map all of lowmem.
*/
-KERNEL_PAGES = (KERNEL_IMAGE_SIZE + MAPPING_BEYOND_END)>>PAGE_SHIFT
+KERNEL_PAGES = LOWMEM_PAGES
INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE_asm
RESERVE_BRK(pagetables, INIT_MAP_SIZE)
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index ae03cab4352..4ff5968f12d 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -27,6 +27,9 @@
#define HPET_DEV_FSB_CAP 0x1000
#define HPET_DEV_PERI_CAP 0x2000
+#define HPET_MIN_CYCLES 128
+#define HPET_MIN_PROG_DELTA (HPET_MIN_CYCLES + (HPET_MIN_CYCLES >> 1))
+
#define EVT_TO_HPET_DEV(evt) container_of(evt, struct hpet_dev, evt)
/*
@@ -299,8 +302,9 @@ static void hpet_legacy_clockevent_register(void)
/* Calculate the min / max delta */
hpet_clockevent.max_delta_ns = clockevent_delta2ns(0x7FFFFFFF,
&hpet_clockevent);
- /* 5 usec minimum reprogramming delta. */
- hpet_clockevent.min_delta_ns = 5000;
+ /* Setup minimum reprogramming delta. */
+ hpet_clockevent.min_delta_ns = clockevent_delta2ns(HPET_MIN_PROG_DELTA,
+ &hpet_clockevent);
/*
* Start hpet with the boot cpu mask and make it
@@ -393,22 +397,24 @@ static int hpet_next_event(unsigned long delta,
* the wraparound into account) nor a simple count down event
* mode. Further the write to the comparator register is
* delayed internally up to two HPET clock cycles in certain
- * chipsets (ATI, ICH9,10). We worked around that by reading
- * back the compare register, but that required another
- * workaround for ICH9,10 chips where the first readout after
- * write can return the old stale value. We already have a
- * minimum delta of 5us enforced, but a NMI or SMI hitting
+ * chipsets (ATI, ICH9,10). Some newer AMD chipsets have even
+ * longer delays. We worked around that by reading back the
+ * compare register, but that required another workaround for
+ * ICH9,10 chips where the first readout after write can
+ * return the old stale value. We already had a minimum
+ * programming delta of 5us enforced, but a NMI or SMI hitting
* between the counter readout and the comparator write can
* move us behind that point easily. Now instead of reading
* the compare register back several times, we make the ETIME
* decision based on the following: Return ETIME if the
- * counter value after the write is less than 8 HPET cycles
+ * counter value after the write is less than HPET_MIN_CYCLES
* away from the event or if the counter is already ahead of
- * the event.
+ * the event. The minimum programming delta for the generic
+ * clockevents code is set to 1.5 * HPET_MIN_CYCLES.
*/
res = (s32)(cnt - hpet_readl(HPET_COUNTER));
- return res < 8 ? -ETIME : 0;
+ return res < HPET_MIN_CYCLES ? -ETIME : 0;
}
static void hpet_legacy_set_mode(enum clock_event_mode mode,
diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c
index dcb65cc0a05..1a1b606d3e9 100644
--- a/arch/x86/kernel/microcode_intel.c
+++ b/arch/x86/kernel/microcode_intel.c
@@ -364,8 +364,7 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
/* For performance reasons, reuse mc area when possible */
if (!mc || mc_size > curr_mc_size) {
- if (mc)
- vfree(mc);
+ vfree(mc);
mc = vmalloc(mc_size);
if (!mc)
break;
@@ -374,13 +373,11 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
if (get_ucode_data(mc, ucode_ptr, mc_size) ||
microcode_sanity_check(mc) < 0) {
- vfree(mc);
break;
}
if (get_matching_microcode(&uci->cpu_sig, mc, new_rev)) {
- if (new_mc)
- vfree(new_mc);
+ vfree(new_mc);
new_rev = mc_header.rev;
new_mc = mc;
mc = NULL; /* trigger new vmalloc */
@@ -390,12 +387,10 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
leftover -= mc_size;
}
- if (mc)
- vfree(mc);
+ vfree(mc);
if (leftover) {
- if (new_mc)
- vfree(new_mc);
+ vfree(new_mc);
state = UCODE_ERROR;
goto out;
}
@@ -405,8 +400,7 @@ static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
goto out;
}
- if (uci->mc)
- vfree(uci->mc);
+ vfree(uci->mc);
uci->mc = (struct microcode_intel *)new_mc;
pr_debug("CPU%d found a matching microcode update with version 0x%x (current=0x%x)\n",
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c
new file mode 100644
index 00000000000..2a26819bb6a
--- /dev/null
+++ b/arch/x86/kernel/resource.c
@@ -0,0 +1,48 @@
+#include <linux/ioport.h>
+#include <asm/e820.h>
+
+static void resource_clip(struct resource *res, resource_size_t start,
+ resource_size_t end)
+{
+ resource_size_t low = 0, high = 0;
+
+ if (res->end < start || res->start > end)
+ return; /* no conflict */
+
+ if (res->start < start)
+ low = start - res->start;
+
+ if (res->end > end)
+ high = res->end - end;
+
+ /* Keep the area above or below the conflict, whichever is larger */
+ if (low > high)
+ res->end = start - 1;
+ else
+ res->start = end + 1;
+}
+
+static void remove_e820_regions(struct resource *avail)
+{
+ int i;
+ struct e820entry *entry;
+
+ for (i = 0; i < e820.nr_map; i++) {
+ entry = &e820.map[i];
+
+ resource_clip(avail, entry->addr,
+ entry->addr + entry->size - 1);
+ }
+}
+
+void arch_remove_reservations(struct resource *avail)
+{
+ /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
+ if (avail->flags & IORESOURCE_MEM) {
+ if (avail->start < BIOS_END)
+ avail->start = BIOS_END;
+ resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
+
+ remove_e820_regions(avail);
+ }
+}
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 21c6746338a..a0f52af256a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -501,7 +501,18 @@ static inline unsigned long long get_total_mem(void)
return total << PAGE_SHIFT;
}
-#define DEFAULT_BZIMAGE_ADDR_MAX 0x37FFFFFF
+/*
+ * Keep the crash kernel below this limit. On 32 bits earlier kernels
+ * would limit the kernel to the low 512 MiB due to mapping restrictions.
+ * On 64 bits, kexec-tools currently limits us to 896 MiB; increase this
+ * limit once kexec-tools are fixed.
+ */
+#ifdef CONFIG_X86_32
+# define CRASH_KERNEL_ADDR_MAX (512 << 20)
+#else
+# define CRASH_KERNEL_ADDR_MAX (896 << 20)
+#endif
+
static void __init reserve_crashkernel(void)
{
unsigned long long total_mem;
@@ -520,10 +531,10 @@ static void __init reserve_crashkernel(void)
const unsigned long long alignment = 16<<20; /* 16M */
/*
- * kexec want bzImage is below DEFAULT_BZIMAGE_ADDR_MAX
+ * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX
*/
crash_base = memblock_find_in_range(alignment,
- DEFAULT_BZIMAGE_ADDR_MAX, crash_size, alignment);
+ CRASH_KERNEL_ADDR_MAX, crash_size, alignment);
if (crash_base == MEMBLOCK_ERROR) {
pr_info("crashkernel reservation failed - No suitable area found.\n");
@@ -769,7 +780,6 @@ void __init setup_arch(char **cmdline_p)
x86_init.oem.arch_setup();
- resource_alloc_from_bottom = 0;
iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
setup_memory_map();
parse_setup_data();
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 9c253bd65e2..547128546cc 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -394,7 +394,8 @@ static void __init setup_xstate_init(void)
* Setup init_xstate_buf to represent the init state of
* all the features managed by the xsave
*/
- init_xstate_buf = alloc_bootmem(xstate_size);
+ init_xstate_buf = alloc_bootmem_align(xstate_size,
+ __alignof__(struct xsave_struct));
init_xstate_buf->i387.mxcsr = MXCSR_DEFAULT;
clts();
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index c4bb261c106..b1805b78842 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -65,21 +65,13 @@ pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
- resource_size_t start = round_down(res->end - size + 1, align);
+ resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
-
- /*
- * If we're avoiding ISA aliases, the largest contiguous I/O
- * port space is 256 bytes. Clearing bits 9 and 10 preserves
- * all 256-byte and smaller alignments, so the result will
- * still be correctly aligned.
- */
- if (!skip_isa_ioresource_align(dev))
- start &= ~0x300;
- } else if (res->flags & IORESOURCE_MEM) {
- if (start < BIOS_END)
- start = res->end; /* fail; no space */
+ if (skip_isa_ioresource_align(dev))
+ return start;
+ if (start & 0x300)
+ start = (start + 0x3ff) & ~0x3ff;
}
return start;
}
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 4a2afa1bac5..b6552b189bc 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -25,7 +25,7 @@ targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y)
export CPPFLAGS_vdso.lds += -P -C
-VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -Wl,-soname=linux-vdso.so.1 \
+VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
-Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
@@ -69,7 +69,7 @@ vdso32.so-$(VDSO32-y) += sysenter
vdso32-images = $(vdso32.so-y:%=vdso32-%.so)
CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
-VDSO_LDFLAGS_vdso32.lds = -m elf_i386 -Wl,-soname=linux-gate.so.1
+VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-soname=linux-gate.so.1
# This makes sure the $(obj) subdirectory exists even though vdso32/
# is not a kbuild sub-make subdirectory.