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| author |   H. Peter Anvin <hpa@zytor.com> | 2010-07-27 23:28:28 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-07-27 23:28:28 -0700 |
| commit | d3608b5681d238605b7da6be62244e803e24c649 (patch) | |
| tree | 1fc47e9f58e6e938eefd40904745a60986739bde /arch/x86/kernel/acpi | |
| parent | x86-64: Simplify loading initial_gs (diff) | |
| parent | x86: Add memory modify constraints to xchg() and cmpxchg() (diff) | |
| download | linux-dev-d3608b5681d238605b7da6be62244e803e24c649.tar.xz linux-dev-d3608b5681d238605b7da6be62244e803e24c649.zip | |
Merge remote branch 'origin/x86/urgent' into x86/asm
Diffstat (limited to 'arch/x86/kernel/acpi')
| -rw-r--r-- | arch/x86/kernel/acpi/cstate.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 9 |
2 files changed, 16 insertions, 2 deletions
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index 2e837f5080fe..fb7a5f052e2b 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -145,6 +145,15 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu, percpu_entry->states[cx->index].eax = cx->address; percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK; } + + /* + * For _CST FFH on Intel, if GAS.access_size bit 1 is cleared, + * then we should skip checking BM_STS for this C-state. + * ref: "Intel Processor Vendor-Specific ACPI Interface Specification" + */ + if ((c->x86_vendor == X86_VENDOR_INTEL) && !(reg->access_size & 0x2)) + cx->bm_sts_skip = 1; + return retval; } EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe); diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 82e508677b91..fcc3c61fdecc 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -157,9 +157,14 @@ static int __init acpi_sleep_setup(char *str) #ifdef CONFIG_HIBERNATION if (strncmp(str, "s4_nohwsig", 10) == 0) acpi_no_s4_hw_signature(); - if (strncmp(str, "s4_nonvs", 8) == 0) - acpi_s4_no_nvs(); + if (strncmp(str, "s4_nonvs", 8) == 0) { + pr_warning("ACPI: acpi_sleep=s4_nonvs is deprecated, " + "please use acpi_sleep=nonvs instead"); + acpi_nvs_nosave(); + } #endif + if (strncmp(str, "nonvs", 5) == 0) + acpi_nvs_nosave(); if (strncmp(str, "old_ordering", 12) == 0) acpi_old_suspend_ordering(); str = strchr(str, ','); |