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authorLinus Torvalds <torvalds@linux-foundation.org>2010-06-11 17:19:45 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-11 17:19:45 -0400
commit7ae1277a5202109a31d8f81ac99d4a53278dab84 (patch)
treeb32748f82150e4a37b2416ffc2d844cc7d9e7ee5 /arch
parentb25b550bb153626df6a48eb8583e923e3dfcf64a (diff)
parent85a0e7539781dad4bfcffd98e72fa9f130f4e40d (diff)
Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / x86: Save/restore MISC_ENABLE register
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/suspend_32.h2
-rw-r--r--arch/x86/include/asm/suspend_64.h2
-rw-r--r--arch/x86/power/cpu.c4
3 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/suspend_32.h b/arch/x86/include/asm/suspend_32.h
index 48dcfa62ea07..fd921c3a6841 100644
--- a/arch/x86/include/asm/suspend_32.h
+++ b/arch/x86/include/asm/suspend_32.h
@@ -15,6 +15,8 @@ static inline int arch_prepare_suspend(void) { return 0; }
15struct saved_context { 15struct saved_context {
16 u16 es, fs, gs, ss; 16 u16 es, fs, gs, ss;
17 unsigned long cr0, cr2, cr3, cr4; 17 unsigned long cr0, cr2, cr3, cr4;
18 u64 misc_enable;
19 bool misc_enable_saved;
18 struct desc_ptr gdt; 20 struct desc_ptr gdt;
19 struct desc_ptr idt; 21 struct desc_ptr idt;
20 u16 ldt; 22 u16 ldt;
diff --git a/arch/x86/include/asm/suspend_64.h b/arch/x86/include/asm/suspend_64.h
index 06284f42b759..8d942afae681 100644
--- a/arch/x86/include/asm/suspend_64.h
+++ b/arch/x86/include/asm/suspend_64.h
@@ -27,6 +27,8 @@ struct saved_context {
27 u16 ds, es, fs, gs, ss; 27 u16 ds, es, fs, gs, ss;
28 unsigned long gs_base, gs_kernel_base, fs_base; 28 unsigned long gs_base, gs_kernel_base, fs_base;
29 unsigned long cr0, cr2, cr3, cr4, cr8; 29 unsigned long cr0, cr2, cr3, cr4, cr8;
30 u64 misc_enable;
31 bool misc_enable_saved;
30 unsigned long efer; 32 unsigned long efer;
31 u16 gdt_pad; 33 u16 gdt_pad;
32 u16 gdt_limit; 34 u16 gdt_limit;
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index 0a979f3e5b8a..1290ba54b350 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -105,6 +105,8 @@ static void __save_processor_state(struct saved_context *ctxt)
105 ctxt->cr4 = read_cr4(); 105 ctxt->cr4 = read_cr4();
106 ctxt->cr8 = read_cr8(); 106 ctxt->cr8 = read_cr8();
107#endif 107#endif
108 ctxt->misc_enable_saved = !rdmsrl_safe(MSR_IA32_MISC_ENABLE,
109 &ctxt->misc_enable);
108} 110}
109 111
110/* Needed by apm.c */ 112/* Needed by apm.c */
@@ -152,6 +154,8 @@ static void fix_processor_context(void)
152 */ 154 */
153static void __restore_processor_state(struct saved_context *ctxt) 155static void __restore_processor_state(struct saved_context *ctxt)
154{ 156{
157 if (ctxt->misc_enable_saved)
158 wrmsrl(MSR_IA32_MISC_ENABLE, ctxt->misc_enable);
155 /* 159 /*
156 * control registers 160 * control registers
157 */ 161 */