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@xxxxxxxxx> --- arch/x86/kvm/x86.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ff4623b..21fd313 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2361,7 +2361,7 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, /* cpuid 7.0.ebx */ const u32 kvm_supported_word9_x86_features = - F(SMEP); + F(SMEP) | F(ERMS); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
