From 7b874c26a62487acaf2e7e179715991c70db25db Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Mon, 2 Mar 2020 15:56:59 -0800 Subject: [PATCH] KVM: x86: Check for Intel PT MSR virtualization using KVM cpu caps Use kvm_cpu_cap_has() to check for Intel PT when processing the list of virtualized MSRs to pave the way toward removing ->pt_supported(). No functional change intended. Reviewed-by: Vitaly Kuznetsov Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/x86.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fd0889f..f3fac68 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5220,23 +5220,23 @@ static void kvm_init_msr_list(void) break; case MSR_IA32_RTIT_CTL: case MSR_IA32_RTIT_STATUS: - if (!kvm_x86_ops->pt_supported()) + if (!kvm_cpu_cap_has(X86_FEATURE_INTEL_PT)) continue; break; case MSR_IA32_RTIT_CR3_MATCH: - if (!kvm_x86_ops->pt_supported() || + if (!kvm_cpu_cap_has(X86_FEATURE_INTEL_PT) || !intel_pt_validate_hw_cap(PT_CAP_cr3_filtering)) continue; break; case MSR_IA32_RTIT_OUTPUT_BASE: case MSR_IA32_RTIT_OUTPUT_MASK: - if (!kvm_x86_ops->pt_supported() || + if (!kvm_cpu_cap_has(X86_FEATURE_INTEL_PT) || (!intel_pt_validate_hw_cap(PT_CAP_topa_output) && !intel_pt_validate_hw_cap(PT_CAP_single_range_output))) continue; break; case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B: { - if (!kvm_x86_ops->pt_supported() || + if (!kvm_cpu_cap_has(X86_FEATURE_INTEL_PT) || msrs_to_save_all[i] - MSR_IA32_RTIT_ADDR0_A >= intel_pt_validate_hw_cap(PT_CAP_num_address_ranges) * 2) continue; -- 2.7.4