From a01c8f9b4e266df1d7166d23216f2060648f862d Mon Sep 17 00:00:00 2001 From: "Yang, Wei" Date: Tue, 14 Jun 2011 15:19:06 +0800 Subject: [PATCH] KVM: Enable ERMS feature support for KVM 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 Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 76c16a5c6c56..0b803f04bde7 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2372,7 +2372,7 @@ 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(FSGSBASE); + F(SMEP) | F(FSGSBASE) | F(ERMS); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); -- 2.20.1