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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>
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1 changed files with 2 additions and 2 deletions
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@ -6575,7 +6575,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
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/* Exposing INVPCID only when PCID is exposed */
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best = kvm_find_cpuid_entry(vcpu, 0x7, 0);
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if (vmx_invpcid_supported() &&
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best && (best->ecx & bit(X86_FEATURE_INVPCID)) &&
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best && (best->ebx & bit(X86_FEATURE_INVPCID)) &&
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guest_cpuid_has_pcid(vcpu)) {
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exec_control |= SECONDARY_EXEC_ENABLE_INVPCID;
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vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
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@ -6585,7 +6585,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
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vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
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exec_control);
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if (best)
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best->ecx &= ~bit(X86_FEATURE_INVPCID);
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best->ebx &= ~bit(X86_FEATURE_INVPCID);
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}
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}
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