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KVM: Enable ERMS feature support for KVM

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This patch exposes ERMS feature to KVM guests.

The REP MOVSB/STOSB instruction can enhance fast strings attempts to
move as much of the data with larger size load/stores as possible.

Signed-off-by: Yang, Wei <wei.y.yang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Yang, Wei
2011-06-14 15:19:06 +08:00
committed by Avi Kivity
parent 176f61da82
commit a01c8f9b4e
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/x86.c
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@@ -2372,7 +2372,7 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
/* cpuid 7.0.ebx */ /* cpuid 7.0.ebx */
const u32 kvm_supported_word9_x86_features = const u32 kvm_supported_word9_x86_features =
F(SMEP) | F(FSGSBASE); F(SMEP) | F(FSGSBASE) | F(ERMS);
/* all calls to cpuid_count() should be made on the same cpu */ /* all calls to cpuid_count() should be made on the same cpu */
get_cpu(); get_cpu();