diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-10-11 10:55:04 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-10-11 10:55:04 +0100 |
| commit | a0f0dd57f4a85310d9936f1770a0424b49fef876 (patch) | |
| tree | 2f85b8b67dda13d19b02ca39e0fbef921cb1cf8b /arch/x86/kernel/acpi/sleep.c | |
| parent | 2a552d5e63d7fa602c9a9a0717008737f55625a6 (diff) | |
| parent | 846a136881b8f73c1f74250bf6acfaa309cab1f2 (diff) | |
Merge branch 'fixes' into for-linus
Conflicts:
arch/arm/kernel/smp.c
Diffstat (limited to 'arch/x86/kernel/acpi/sleep.c')
| -rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 1b8e5a03d94..11676cf65ae 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -43,17 +43,22 @@ int acpi_suspend_lowlevel(void) header->video_mode = saved_video_mode; + header->pmode_behavior = 0; + #ifndef CONFIG_64BIT store_gdt((struct desc_ptr *)&header->pmode_gdt); - if (rdmsr_safe(MSR_EFER, &header->pmode_efer_low, - &header->pmode_efer_high)) - header->pmode_efer_low = header->pmode_efer_high = 0; + if (!rdmsr_safe(MSR_EFER, + &header->pmode_efer_low, + &header->pmode_efer_high)) + header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_EFER); #endif /* !CONFIG_64BIT */ header->pmode_cr0 = read_cr0(); - header->pmode_cr4 = read_cr4_safe(); - header->pmode_behavior = 0; + if (__this_cpu_read(cpu_info.cpuid_level) >= 0) { + header->pmode_cr4 = read_cr4(); + header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_CR4); + } if (!rdmsr_safe(MSR_IA32_MISC_ENABLE, &header->pmode_misc_en_low, &header->pmode_misc_en_high)) |