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| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-04-10 11:41:40 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-04-16 15:39:02 +0200 |
| commit | 674ea351cdeb01d2740edce31db7f2d79ce6095d (patch) | |
| tree | aaabcbffb1ebd5543da17d648b3818e5014b01f9 /arch/x86/kvm/vmx | |
| parent | KVM: x86: clear VM_EXIT_SAVE_IA32_PAT (diff) | |
| download | linux-674ea351cdeb01d2740edce31db7f2d79ce6095d.tar.xz linux-674ea351cdeb01d2740edce31db7f2d79ce6095d.zip | |
KVM: x86: optimize check for valid PAT value
This check will soon be done on every nested vmentry and vmexit,
"parallelize" it using bitwise operations.
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index a8a1e533d7fb..c40fb667002c 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1891,7 +1891,7 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) break; case MSR_IA32_CR_PAT: if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) { - if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data)) + if (!kvm_pat_valid(data)) return 1; vmcs_write64(GUEST_IA32_PAT, data); vcpu->arch.pat = data; |