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authorRen, Yongjie <yongjie.ren@intel.com>2012-09-07 07:36:59 +0000
committerAvi Kivity <avi@redhat.com>2012-09-09 17:34:01 +0300
commit4f97704555672f9ab48ca623561e96a9430bec9a (patch)
tree0dd625a70ee60f208bf4f68321fff6031ff2c0e0
parent749c59fd15b2c18dd6c15c353a899fb6ac49b865 (diff)
downloadlinux-next-4f97704555672f9ab48ca623561e96a9430bec9a.tar.gz
KVM: x86: Check INVPCID feature bit in EBX of leaf 7
Checks and operations on the INVPCID feature bit should use EBX of CPUID leaf 7 instead of ECX. Signed-off-by: Junjie Mao <junjie.mao@intel.com> Signed-off-by: Yongjie Ren <yongjien.ren@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/x86/kvm/vmx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c00f03de1b79..002b4a566e2d 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6575,7 +6575,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
/* Exposing INVPCID only when PCID is exposed */
best = kvm_find_cpuid_entry(vcpu, 0x7, 0);
if (vmx_invpcid_supported() &&
- best && (best->ecx & bit(X86_FEATURE_INVPCID)) &&
+ best && (best->ebx & bit(X86_FEATURE_INVPCID)) &&
guest_cpuid_has_pcid(vcpu)) {
exec_control |= SECONDARY_EXEC_ENABLE_INVPCID;
vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
@@ -6585,7 +6585,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
exec_control);
if (best)
- best->ecx &= ~bit(X86_FEATURE_INVPCID);
+ best->ebx &= ~bit(X86_FEATURE_INVPCID);
}
}