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KVM: VMX: Use kvm_read_cr4() to get cr4 value

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Directly use vcpu->arch.cr4 is not recommended since it gets stale value
if the cr4 is not available.

Use kvm_read_cr4() instead to ensure correct value.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://lore.kernel.org/r/20230410125017.1305238-2-xiaoyao.li@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Xiaoyao Li 2023-04-10 08:50:16 -04:00 committed by Sean Christopherson
parent b9846a698c
commit 334006b78c
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/vmx/vmx.c
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@ -3387,7 +3387,7 @@ static bool vmx_is_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
unsigned long old_cr4 = vcpu->arch.cr4;
unsigned long old_cr4 = kvm_read_cr4(vcpu);
struct vcpu_vmx *vmx = to_vmx(vcpu);
/*
* Pass through host's Machine Check Enable value to hw_cr4, which