Per Intel SDM, RTIT_CTL_BRANCH_EN bit has no dependency on any CPUID leaf 0x14. Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx> --- arch/x86/kvm/vmx/vmx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 7ed96c460661..4a70a6d2f442 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7116,7 +7116,8 @@ static void update_intel_pt_cfg(struct kvm_vcpu *vcpu) /* Initialize and clear the no dependency bits */ vmx->pt_desc.ctl_bitmask = ~(RTIT_CTL_TRACEEN | RTIT_CTL_OS | - RTIT_CTL_USR | RTIT_CTL_TSC_EN | RTIT_CTL_DISRETC); + RTIT_CTL_USR | RTIT_CTL_TSC_EN | RTIT_CTL_DISRETC | + RTIT_CTL_BRANCH_EN); /* * If CPUID.(EAX=14H,ECX=0):EBX[0]=1 CR3Filter can be set otherwise @@ -7134,12 +7135,11 @@ static void update_intel_pt_cfg(struct kvm_vcpu *vcpu) RTIT_CTL_CYC_THRESH | RTIT_CTL_PSB_FREQ); /* - * If CPUID.(EAX=14H,ECX=0):EBX[3]=1 MTCEn BranchEn and - * MTCFreq can be set + * If CPUID.(EAX=14H,ECX=0):EBX[3]=1 MTCEn and MTCFreq can be set */ if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc)) vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_MTC_EN | - RTIT_CTL_BRANCH_EN | RTIT_CTL_MTC_RANGE); + RTIT_CTL_MTC_RANGE); /* If CPUID.(EAX=14H,ECX=0):EBX[4]=1 FUPonPTW and PTWEn can be set */ if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_ptwrite)) -- 2.27.0
