summaryrefslogtreecommitdiffstats
path: root/arch/x86/kvm
diff options
context:
space:
mode:
authorYang, Wei <wei.y.yang@intel.com>2011-06-14 15:19:06 +0800
committerAvi Kivity <avi@redhat.com>2011-07-12 13:16:25 +0300
commita01c8f9b4e266df1d7166d23216f2060648f862d (patch)
tree9f1255015b195cc96a8e88da5a1bee1300a541ed /arch/x86/kvm
parent176f61da82435eae09cc96f70b530d1ba0746b8b (diff)
downloadop-kernel-dev-a01c8f9b4e266df1d7166d23216f2060648f862d.zip
op-kernel-dev-a01c8f9b4e266df1d7166d23216f2060648f862d.tar.gz
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 <wei.y.yang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/x86.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 76c16a5..0b803f0 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();
OpenPOWER on IntegriCloud