diff options
| author | Binbin Wu <binbin.wu@linux.intel.com> | 2023-09-13 20:42:24 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-11-28 17:54:09 -0800 |
| commit | 183bdd161c2b773a62f01d1c030f5a3a5b7c33b5 (patch) | |
| tree | 7dd91a109e258ba29e2d57e889e7edea8860eee2 /arch/x86/kvm/vmx/vmx.c | |
| parent | 703d794cb8cb28c07b22c1c845f5c4d4c419aff7 (diff) | |
KVM: x86: Use KVM-governed feature framework to track "LAM enabled"
Use the governed feature framework to track if Linear Address Masking (LAM)
is "enabled", i.e. if LAM can be used by the guest.
Using the framework to avoid the relative expensive call guest_cpuid_has()
during cr3 and vmexit handling paths for LAM.
No functional change intended.
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Tested-by: Xuelian Guo <xuelian.guo@intel.com>
Link: https://lore.kernel.org/r/20230913124227.12574-14-binbin.wu@linux.intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 3825ab316be9..d30df9b3fe3e 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7763,6 +7763,7 @@ static void vmx_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu) kvm_governed_feature_check_and_set(vcpu, X86_FEATURE_XSAVES); kvm_governed_feature_check_and_set(vcpu, X86_FEATURE_VMX); + kvm_governed_feature_check_and_set(vcpu, X86_FEATURE_LAM); vmx_setup_uret_msrs(vmx); |