diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-06-11 14:19:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-06-11 14:19:45 -0700 |
| commit | 7ae1277a5202109a31d8f81ac99d4a53278dab84 (patch) | |
| tree | b32748f82150e4a37b2416ffc2d844cc7d9e7ee5 /arch/x86 | |
| parent | b25b550bb153626df6a48eb8583e923e3dfcf64a (diff) | |
| parent | 85a0e7539781dad4bfcffd98e72fa9f130f4e40d (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/x86')
| -rw-r--r-- | arch/x86/include/asm/suspend_32.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/suspend_64.h | 2 | ||||
| -rw-r--r-- | arch/x86/power/cpu.c | 4 |
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; } struct saved_context { u16 es, fs, gs, ss; unsigned long cr0, cr2, cr3, cr4; + u64 misc_enable; + bool misc_enable_saved; struct desc_ptr gdt; struct desc_ptr idt; 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 { u16 ds, es, fs, gs, ss; unsigned long gs_base, gs_kernel_base, fs_base; unsigned long cr0, cr2, cr3, cr4, cr8; + u64 misc_enable; + bool misc_enable_saved; unsigned long efer; u16 gdt_pad; 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) ctxt->cr4 = read_cr4(); ctxt->cr8 = read_cr8(); #endif + ctxt->misc_enable_saved = !rdmsrl_safe(MSR_IA32_MISC_ENABLE, + &ctxt->misc_enable); } /* Needed by apm.c */ @@ -152,6 +154,8 @@ static void fix_processor_context(void) */ static void __restore_processor_state(struct saved_context *ctxt) { + if (ctxt->misc_enable_saved) + wrmsrl(MSR_IA32_MISC_ENABLE, ctxt->misc_enable); /* * control registers */ |