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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-17 23:57:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-17 23:57:20 +0200 |
| commit | 393d81aa026e19b6ede6f5f11955c97ee62e5df5 (patch) | |
| tree | a1d9511e488e19d41089ff0a736f6ce52a81c6e5 /arch/x86/kernel/acpi/processor.c | |
| parent | 93a0886e2368eafb9df5e2021fb185195cee88b2 (diff) | |
| parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
Merge branch 'linus' into xen-64bit
Diffstat (limited to 'arch/x86/kernel/acpi/processor.c')
| -rw-r--r-- | arch/x86/kernel/acpi/processor.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c index de2d2e4ebad..7c074eec39f 100644 --- a/arch/x86/kernel/acpi/processor.c +++ b/arch/x86/kernel/acpi/processor.c @@ -56,6 +56,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_ACPI)) buf[2] |= ACPI_PDC_T_FFH; + /* + * If mwait/monitor is unsupported, C2/C3_FFH will be disabled + */ + if (!cpu_has(c, X86_FEATURE_MWAIT)) + buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); + obj->type = ACPI_TYPE_BUFFER; obj->buffer.length = 12; obj->buffer.pointer = (u8 *) buf; |