From 8d921acf98ec3e82cf673a5422890939cd4c24f5 Mon Sep 17 00:00:00 2001 From: Sean Christopherson <sean.j.christopherson@intel.com> Date: Thu, 24 Sep 2020 12:42:46 -0700 Subject: [PATCH] KVM: VMX: Use precomputed MAXPHYADDR for RTIT base MSR check Use cpuid_maxphyaddr() instead of cpuid_query_maxphyaddr() for the RTIT base MSR check. There is no reason to recompute MAXPHYADDR as the precomputed version is synchronized with CPUID updates, and MSR_IA32_RTIT_OUTPUT_BASE is not written between stuffing CPUID and refreshing vcpu->arch.maxphyaddr. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <20200924194250.19137-2-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- arch/x86/kvm/vmx/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index dc74bb62d1df7..84dea7357e1e4 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -147,7 +147,7 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO); RTIT_STATUS_BYTECNT)) #define MSR_IA32_RTIT_OUTPUT_BASE_MASK \ - (~((1UL << cpuid_query_maxphyaddr(vcpu)) - 1) | 0x7f) + (~((1UL << cpuid_maxphyaddr(vcpu)) - 1) | 0x7f) /* * These 2 parameters are used to config the controls for Pause-Loop Exiting: -- 2.30.2