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-rw-r--r--arch/powerpc/include/asm/hvcall.h22
-rw-r--r--arch/powerpc/include/asm/irqflags.h5
-rw-r--r--arch/powerpc/include/asm/mmu_context.h1
-rw-r--r--arch/powerpc/include/asm/systbl.h2
-rw-r--r--arch/powerpc/kernel/head_32.S2
-rw-r--r--arch/powerpc/kernel/lparcfg.c5
-rw-r--r--arch/powerpc/kernel/misc_32.S2
-rw-r--r--arch/powerpc/kernel/module.c15
-rw-r--r--arch/powerpc/kernel/sys_ppc32.c57
-rw-r--r--arch/powerpc/platforms/pseries/plpar_wrappers.h27
-rw-r--r--arch/powerpc/platforms/pseries/setup.c28
-rw-r--r--arch/sparc64/mm/init.c30
-rw-r--r--arch/x86/boot/boot.h2
-rw-r--r--arch/x86/boot/memory.c1
-rw-r--r--arch/x86/kernel/acpi/sleep.c2
-rw-r--r--arch/x86/kernel/efi_32.c4
-rw-r--r--arch/x86/kernel/mmconf-fam10h_64.c2
-rw-r--r--arch/x86/kernel/mpparse.c6
-rw-r--r--arch/x86/kernel/pci-calgary_64.c2
-rw-r--r--arch/x86/kernel/smpboot.c11
-rw-r--r--arch/x86/kernel/tsc.c2
-rw-r--r--arch/x86/power/cpu_32.c6
-rw-r--r--arch/x86/power/hibernate_asm_32.S26
23 files changed, 139 insertions, 121 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index fbe2932fa9e..6251a4b10be 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -291,6 +291,28 @@ struct hvcall_mpp_data {
};
int h_get_mpp(struct hvcall_mpp_data *);
+
+#ifdef CONFIG_PPC_PSERIES
+extern int CMO_PrPSP;
+extern int CMO_SecPSP;
+extern unsigned long CMO_PageSize;
+
+static inline int cmo_get_primary_psp(void)
+{
+ return CMO_PrPSP;
+}
+
+static inline int cmo_get_secondary_psp(void)
+{
+ return CMO_SecPSP;
+}
+
+static inline unsigned long cmo_get_page_size(void)
+{
+ return CMO_PageSize;
+}
+#endif /* CONFIG_PPC_PSERIES */
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_HVCALL_H */
diff --git a/arch/powerpc/include/asm/irqflags.h b/arch/powerpc/include/asm/irqflags.h
index 17ba3a881bf..5f68ecfdf51 100644
--- a/arch/powerpc/include/asm/irqflags.h
+++ b/arch/powerpc/include/asm/irqflags.h
@@ -20,7 +20,7 @@
#define TRACE_ENABLE_INTS bl .trace_hardirqs_on
#define TRACE_DISABLE_INTS bl .trace_hardirqs_off
#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip) \
- cmpdi en, 0; \
+ cmpdi en,0; \
bne 95f; \
stb en,PACASOFTIRQEN(r13); \
bl .trace_hardirqs_off; \
@@ -29,7 +29,8 @@
li en,1;
#define TRACE_AND_RESTORE_IRQ(en) \
TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f); \
-96: stb en,PACASOFTIRQEN(r13)
+ stb en,PACASOFTIRQEN(r13); \
+96:
#else
#define TRACE_ENABLE_INTS
#define TRACE_DISABLE_INTS
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index 9102b8bf0ea..6b993ef452f 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -147,7 +147,6 @@ static inline void get_mmu_context(struct mm_struct *mm)
static inline int init_new_context(struct task_struct *t, struct mm_struct *mm)
{
mm->context.id = NO_CONTEXT;
- mm->context.vdso_base = 0;
return 0;
}
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index e084272ed1c..f6cc7a43b4f 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -92,7 +92,7 @@ COMPAT_SYS_SPU(readlink)
SYSCALL(uselib)
SYSCALL(swapon)
SYSCALL(reboot)
-SYSX(sys_ni_syscall,old32_readdir,old_readdir)
+SYSX(sys_ni_syscall,compat_sys_old_readdir,old_readdir)
SYSCALL_SPU(mmap)
SYSCALL_SPU(munmap)
SYSCALL_SPU(truncate)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 99ee2f0f0f2..8bb65751929 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -1155,7 +1155,7 @@ flush_tlbs:
lis r10, 0x40
1: addic. r10, r10, -0x1000
tlbie r10
- blt 1b
+ bgt 1b
sync
blr
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1a09719c762..b3eef30b513 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -416,6 +416,8 @@ static void pseries_cmo_data(struct seq_file *m)
unsigned long cmo_faults = 0;
unsigned long cmo_fault_time = 0;
+ seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO));
+
if (!firmware_has_feature(FW_FEATURE_CMO))
return;
@@ -427,6 +429,9 @@ static void pseries_cmo_data(struct seq_file *m)
seq_printf(m, "cmo_faults=%lu\n", cmo_faults);
seq_printf(m, "cmo_fault_time_usec=%lu\n",
cmo_fault_time / tb_ticks_per_usec);
+ seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp());
+ seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp());
+ seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size());
}
static int pseries_lparcfg_data(struct seq_file *m, void *v)
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 6321ae36f72..7a6dfbca768 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -899,7 +899,7 @@ relocate_new_kernel:
/* set a new stack at the bottom of our page... */
/* (not really needed now) */
- addi r1, r4, KEXEC_CONTROL_CODE_SIZE - 8 /* for LR Save+Back Chain */
+ addi r1, r4, KEXEC_CONTROL_PAGE_SIZE - 8 /* for LR Save+Back Chain */
stw r0, 0(r1)
/* Do the copies */
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index af07003573c..7ff29247526 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -99,18 +99,3 @@ void module_arch_cleanup(struct module *mod)
{
module_bug_cleanup(mod);
}
-
-struct bug_entry *module_find_bug(unsigned long bugaddr)
-{
- struct mod_arch_specific *mod;
- unsigned int i;
- struct bug_entry *bug;
-
- list_for_each_entry(mod, &module_bug_list, bug_list) {
- bug = mod->bug_table;
- for (i = 0; i < mod->num_bugs; ++i, ++bug)
- if (bugaddr == bug->bug_addr)
- return bug;
- }
- return NULL;
-}
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 709f8cb8bfc..d98634c7606 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -52,63 +52,6 @@
#include <asm/ppc-pci.h>
#include <asm/syscalls.h>
-struct old_linux_dirent32 {
- u32 d_ino;
- u32 d_offset;
- unsigned short d_namlen;
- char d_name[1];
-};
-
-struct readdir_callback32 {
- struct old_linux_dirent32 __user * dirent;
- int count;
-};
-
-static int fillonedir(void * __buf, const char * name, int namlen,
- off_t offset, u64 ino, unsigned int d_type)
-{
- struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
- struct old_linux_dirent32 __user * dirent;
- ino_t d_ino;
-
- if (buf->count)
- return -EINVAL;
- d_ino = ino;
- if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
- return -EOVERFLOW;
- buf->count++;
- dirent = buf->dirent;
- put_user(d_ino, &dirent->d_ino);
- put_user(offset, &dirent->d_offset);
- put_user(namlen, &dirent->d_namlen);
- copy_to_user(dirent->d_name, name, namlen);
- put_user(0, dirent->d_name + namlen);
- return 0;
-}
-
-asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
-{
- int error = -EBADF;
- struct file * file;
- struct readdir_callback32 buf;
-
- file = fget(fd);
- if (!file)
- goto out;
-
- buf.count = 0;
- buf.dirent = dirent;
-
- error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.count;
-
-out_putf:
- fput(file);
-out:
- return error;
-}
asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a437267c6bf..d967c1893ab 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -2,6 +2,7 @@
#define _PSERIES_PLPAR_WRAPPERS_H
#include <asm/hvcall.h>
+#include <asm/page.h>
static inline long poll_pending(void)
{
@@ -44,12 +45,34 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
static inline long plpar_page_set_loaned(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
static inline long plpar_page_set_active(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
extern void vpa_init(int cpu);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 063a0d2fba3..3ce8a139b85 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -68,6 +68,9 @@
#include "plpar_wrappers.h"
#include "pseries.h"
+int CMO_PrPSP = -1;
+int CMO_SecPSP = -1;
+unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
int fwnmi_active; /* TRUE if an FWNMI handler is present */
@@ -325,8 +328,7 @@ void pSeries_cmo_feature_init(void)
{
char *ptr, *key, *value, *end;
int call_status;
- int PrPSP = -1;
- int SecPSP = -1;
+ int page_order = IOMMU_PAGE_SHIFT;
pr_debug(" -> fw_cmo_feature_init()\n");
spin_lock(&rtas_data_buf_lock);
@@ -365,21 +367,31 @@ void pSeries_cmo_feature_init(void)
break;
}
- if (0 == strcmp(key, "PrPSP"))
- PrPSP = simple_strtol(value, NULL, 10);
+ if (0 == strcmp(key, "CMOPageSize"))
+ page_order = simple_strtol(value, NULL, 10);
+ else if (0 == strcmp(key, "PrPSP"))
+ CMO_PrPSP = simple_strtol(value, NULL, 10);
else if (0 == strcmp(key, "SecPSP"))
- SecPSP = simple_strtol(value, NULL, 10);
+ CMO_SecPSP = simple_strtol(value, NULL, 10);
value = key = ptr + 1;
}
ptr++;
}
- if (PrPSP != -1 || SecPSP != -1) {
+ /* Page size is returned as the power of 2 of the page size,
+ * convert to the page size in bytes before returning
+ */
+ CMO_PageSize = 1 << page_order;
+ pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
+
+ if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
pr_info("CMO enabled\n");
- pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
powerpc_firmware_features |= FW_FEATURE_CMO;
} else
- pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
spin_unlock(&rtas_data_buf_lock);
pr_debug(" <- fw_cmo_feature_init()\n");
}
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 217de3ea29e..b4aeb0f696d 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -796,6 +796,9 @@ static unsigned long nid_range(unsigned long start, unsigned long end,
start += PAGE_SIZE;
}
+ if (start > end)
+ start = end;
+
return start;
}
#else
@@ -1723,8 +1726,7 @@ void __init paging_init(void)
find_ramdisk(phys_base);
- if (cmdline_memory_size)
- lmb_enforce_memory_limit(phys_base + cmdline_memory_size);
+ lmb_enforce_memory_limit(cmdline_memory_size);
lmb_analyze();
lmb_dump_all();
@@ -1961,6 +1963,15 @@ void __init mem_init(void)
void free_initmem(void)
{
unsigned long addr, initend;
+ int do_free = 1;
+
+ /* If the physical memory maps were trimmed by kernel command
+ * line options, don't even try freeing this initmem stuff up.
+ * The kernel image could have been in the trimmed out region
+ * and if so the freeing below will free invalid page structs.
+ */
+ if (cmdline_memory_size)
+ do_free = 0;
/*
* The init section is aligned to 8k in vmlinux.lds. Page align for >8k pagesizes.
@@ -1975,13 +1986,16 @@ void free_initmem(void)
((unsigned long) __va(kern_base)) -
((unsigned long) KERNBASE));
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
- p = virt_to_page(page);
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
- num_physpages++;
- totalram_pages++;
+ if (do_free) {
+ p = virt_to_page(page);
+
+ ClearPageReserved(p);
+ init_page_count(p);
+ __free_page(p);
+ num_physpages++;
+ totalram_pages++;
+ }
}
}
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 616b804a229..cc0ef13fba7 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -30,6 +30,8 @@
/* Useful macros */
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+
extern struct setup_header hdr;
extern struct boot_params boot_params;
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index 53165c97336..8c3c25f3557 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -13,7 +13,6 @@
*/
#include "boot.h"
-#include <linux/kernel.h>
#define SMAP 0x534d4150 /* ASCII "SMAP" */
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 81e5ab6542d..426e5d91b63 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -86,7 +86,7 @@ int acpi_save_state_mem(void)
#endif /* !CONFIG_64BIT */
header->pmode_cr0 = read_cr0();
- header->pmode_cr4 = read_cr4();
+ header->pmode_cr4 = read_cr4_safe();
header->realmode_flags = acpi_realmode_flags;
header->real_magic = 0x12345678;
diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c
index 4b63c8e1f13..5cab48ee61a 100644
--- a/arch/x86/kernel/efi_32.c
+++ b/arch/x86/kernel/efi_32.c
@@ -53,7 +53,7 @@ void efi_call_phys_prelog(void)
* directory. If I have PAE, I just need to duplicate one entry in
* page directory.
*/
- cr4 = read_cr4();
+ cr4 = read_cr4_safe();
if (cr4 & X86_CR4_PAE) {
efi_bak_pg_dir_pointer[0].pgd =
@@ -91,7 +91,7 @@ void efi_call_phys_epilog(void)
gdt_descr.size = GDT_SIZE - 1;
load_gdt(&gdt_descr);
- cr4 = read_cr4();
+ cr4 = read_cr4_safe();
if (cr4 & X86_CR4_PAE) {
swapper_pg_dir[pgd_index(0)].pgd =
diff --git a/arch/x86/kernel/mmconf-fam10h_64.c b/arch/x86/kernel/mmconf-fam10h_64.c
index fdfdc550b36..efc2f361fe8 100644
--- a/arch/x86/kernel/mmconf-fam10h_64.c
+++ b/arch/x86/kernel/mmconf-fam10h_64.c
@@ -238,7 +238,7 @@ static struct dmi_system_id __devinitdata mmconf_dmi_table[] = {
{}
};
-void __init check_enable_amd_mmconf_dmi(void)
+void __cpuinit check_enable_amd_mmconf_dmi(void)
{
dmi_check_system(mmconf_dmi_table);
}
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 678090508a6..b3fb430725c 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -49,7 +49,7 @@ static int __init mpf_checksum(unsigned char *mp, int len)
return sum & 0xFF;
}
-static void __cpuinit MP_processor_info(struct mpc_config_processor *m)
+static void __init MP_processor_info(struct mpc_config_processor *m)
{
int apicid;
char *bootup_cpu = "";
@@ -484,7 +484,7 @@ static void __init construct_default_ioirq_mptable(int mpc_default_type)
}
-static void construct_ioapic_table(int mpc_default_type)
+static void __init construct_ioapic_table(int mpc_default_type)
{
struct mpc_config_ioapic ioapic;
struct mpc_config_bus bus;
@@ -529,7 +529,7 @@ static void construct_ioapic_table(int mpc_default_type)
construct_default_ioirq_mptable(mpc_default_type);
}
#else
-static inline void construct_ioapic_table(int mpc_default_type) { }
+static inline void __init construct_ioapic_table(int mpc_default_type) { }
#endif
static inline void __init construct_default_ISA_mptable(int mpc_default_type)
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 02d19328525..218d783ed7a 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1350,7 +1350,7 @@ static void calgary_init_bitmap_from_tce_table(struct iommu_table *tbl)
* Function for kdump case. Get the tce tables from first kernel
* by reading the contents of the base adress register of calgary iommu
*/
-static void get_tce_space_from_tar(void)
+static void __init get_tce_space_from_tar(void)
{
int bus;
void __iomem *target;
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index a8fb8a980fa..e139e617f42 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -756,6 +756,14 @@ static void __cpuinit do_fork_idle(struct work_struct *work)
}
#ifdef CONFIG_X86_64
+
+/* __ref because it's safe to call free_bootmem when after_bootmem == 0. */
+static void __ref free_bootmem_pda(struct x8664_pda *oldpda)
+{
+ if (!after_bootmem)
+ free_bootmem((unsigned long)oldpda, sizeof(*oldpda));
+}
+
/*
* Allocate node local memory for the AP pda.
*
@@ -784,8 +792,7 @@ int __cpuinit get_local_pda(int cpu)
if (oldpda) {
memcpy(newpda, oldpda, size);
- if (!after_bootmem)
- free_bootmem((unsigned long)oldpda, size);
+ free_bootmem_pda(oldpda);
}
newpda->in_bootmem = 0;
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 7603c055390..46af7167673 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -104,7 +104,7 @@ __setup("notsc", notsc_setup);
/*
* Read TSC and the reference counters. Take care of SMI disturbance
*/
-static u64 __init tsc_read_refs(u64 *pm, u64 *hpet)
+static u64 tsc_read_refs(u64 *pm, u64 *hpet)
{
u64 t1, t2;
int i;
diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c
index 7dc5d5cf50a..d3e083dea72 100644
--- a/arch/x86/power/cpu_32.c
+++ b/arch/x86/power/cpu_32.c
@@ -45,7 +45,7 @@ static void __save_processor_state(struct saved_context *ctxt)
ctxt->cr0 = read_cr0();
ctxt->cr2 = read_cr2();
ctxt->cr3 = read_cr3();
- ctxt->cr4 = read_cr4();
+ ctxt->cr4 = read_cr4_safe();
}
/* Needed by apm.c */
@@ -98,7 +98,9 @@ static void __restore_processor_state(struct saved_context *ctxt)
/*
* control registers
*/
- write_cr4(ctxt->cr4);
+ /* cr4 was introduced in the Pentium CPU */
+ if (ctxt->cr4)
+ write_cr4(ctxt->cr4);
write_cr3(ctxt->cr3);
write_cr2(ctxt->cr2);
write_cr0(ctxt->cr0);
diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S
index b95aa6cfe3c..4fc7e872c85 100644
--- a/arch/x86/power/hibernate_asm_32.S
+++ b/arch/x86/power/hibernate_asm_32.S
@@ -28,9 +28,9 @@ ENTRY(swsusp_arch_suspend)
ret
ENTRY(restore_image)
- movl resume_pg_dir, %ecx
- subl $__PAGE_OFFSET, %ecx
- movl %ecx, %cr3
+ movl resume_pg_dir, %eax
+ subl $__PAGE_OFFSET, %eax
+ movl %eax, %cr3
movl restore_pblist, %edx
.p2align 4,,7
@@ -52,17 +52,21 @@ copy_loop:
done:
/* go back to the original page tables */
- movl $swapper_pg_dir, %ecx
- subl $__PAGE_OFFSET, %ecx
- movl %ecx, %cr3
+ movl $swapper_pg_dir, %eax
+ subl $__PAGE_OFFSET, %eax
+ movl %eax, %cr3
/* Flush TLB, including "global" things (vmalloc) */
- movl mmu_cr4_features, %eax
- movl %eax, %edx
+ movl mmu_cr4_features, %ecx
+ jecxz 1f # cr4 Pentium and higher, skip if zero
+ movl %ecx, %edx
andl $~(1<<7), %edx; # PGE
movl %edx, %cr4; # turn off PGE
- movl %cr3, %ecx; # flush TLB
- movl %ecx, %cr3
- movl %eax, %cr4; # turn PGE back on
+1:
+ movl %cr3, %eax; # flush TLB
+ movl %eax, %cr3
+ jecxz 1f # cr4 Pentium and higher, skip if zero
+ movl %ecx, %cr4; # turn PGE back on
+1:
movl saved_context_esp, %esp
movl saved_context_ebp, %ebp
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-31 06:49:55 +0000