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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-18 02:37:21 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-25 01:57:32 +0400 |
| commit | dbe9e994c99ac9ac12d2b66ea42f44558f54fa52 (patch) | |
| tree | 1723a47e74cd54094506812bcebaec21d0c14261 | |
| parent | 229664bee6126e01f8662976a5fe2e79813b77c8 (diff) | |
| download | linux-dbe9e994c99ac9ac12d2b66ea42f44558f54fa52.tar.xz | |
xen: no need for domU to worry about MCE/MCA
Mask MCE/MCA out of cpu caps. Its harmless to leave them there, but
it does prevent the kernel from starting an unnecessary thread.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/xen/enlighten.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 943684566ebe..8c5ff24a492b 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -155,6 +155,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx, if (*ax == 1) maskedx = ~((1 << X86_FEATURE_APIC) | /* disable APIC */ (1 << X86_FEATURE_ACPI) | /* disable ACPI */ + (1 << X86_FEATURE_MCE) | /* disable MCE */ + (1 << X86_FEATURE_MCA) | /* disable MCA */ (1 << X86_FEATURE_ACC)); /* thermal monitoring */ asm(XEN_EMULATE_PREFIX "cpuid" |