xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: x86: Move VMX's host_efer to common x86 code

Browse Source 
Move host_efer to common x86 code and use it for CPUID's is_efer_nx() to
avoid constantly re-reading the MSR.

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2020-03-02 15:57:06 -08:00
committed by Paolo Bonzini
parent 600087b614
commit 91661989d1
5 changed files with 8 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kvm/cpuid.c
View File

@@ -134,10 +134,7 @@ int kvm_update_cpuid(struct kvm_vcpu *vcpu)
static int is_efer_nx(void)
{
unsigned long long efer = 0;
rdmsrl_safe(MSR_EFER, &efer);
return efer & EFER_NX;
return host_efer & EFER_NX;
}
static void cpuid_fix_nx_cap(struct kvm_vcpu *vcpu)