diff options
| author | Ren, Yongjie <yongjie.ren@intel.com> | 2012-09-07 07:36:59 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-09-09 17:34:01 +0300 |
| commit | 4f97704555672f9ab48ca623561e96a9430bec9a (patch) | |
| tree | 0dd625a70ee60f208bf4f68321fff6031ff2c0e0 /arch/x86/kvm/vmx.c | |
| parent | 749c59fd15b2c18dd6c15c353a899fb6ac49b865 (diff) | |
| download | lwn-4f97704555672f9ab48ca623561e96a9430bec9a.tar.gz lwn-4f97704555672f9ab48ca623561e96a9430bec9a.zip | |
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>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 4 |
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); } } |