From: Paolo Bonzini <pbonzini@redhat.com>
To: Like Xu <like.xu@linux.intel.com>,
Sean Christopherson <seanjc@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
ak@linux.intel.com, wei.w.wang@intel.com, kan.liang@intel.com,
alex.shi@linux.alibaba.com, kvm@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v14 02/11] KVM: x86/pmu: Set up IA32_PERF_CAPABILITIES if PDCM bit is available
Date: Tue, 2 Feb 2021 12:48:10 +0100 [thread overview]
Message-ID: <0ddc6861-7830-84db-a0c9-9da842237f6b@redhat.com> (raw)
In-Reply-To: <20210201051039.255478-3-like.xu@linux.intel.com>
On 01/02/21 06:10, Like Xu wrote:
>
> - if (guest_cpuid_has(vcpu, X86_FEATURE_PDCM))
> - vcpu->arch.perf_capabilities = vmx_get_perf_capabilities();
Why remove this "if"?
> pmu->nr_arch_gp_counters = min_t(int, eax.split.num_counters, > x86_pmu.num_counters_gp);
> @@ -405,6 +402,8 @@ static void intel_pmu_init(struct kvm_vcpu *vcpu)
> pmu->fixed_counters[i].idx = i + INTEL_PMC_IDX_FIXED;
> pmu->fixed_counters[i].current_config = 0;
> }
> +
> + vcpu->arch.perf_capabilities = 0;
Paolo
next prev parent reply other threads:[~2021-02-02 11:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 5:10 [PATCH v14 00/11] KVM: x86/pmu: Guest Last Branch Recording Enabling Like Xu
2021-02-01 5:10 ` [PATCH v14 01/11] KVM: x86/vmx: Make vmx_set_intercept_for_msr() non-static Like Xu
2021-02-01 5:10 ` [PATCH v14 02/11] KVM: x86/pmu: Set up IA32_PERF_CAPABILITIES if PDCM bit is available Like Xu
2021-02-02 11:48 ` Paolo Bonzini [this message]
2021-02-01 5:10 ` [PATCH v14 03/11] KVM: vmx/pmu: Add PMU_CAP_LBR_FMT check when guest LBR is enabled Like Xu
2021-02-02 12:00 ` Paolo Bonzini
2021-02-01 5:10 ` [PATCH v14 04/11] KVM: vmx/pmu: Expose DEBUGCTLMSR_LBR in the MSR_IA32_DEBUGCTLMSR Like Xu
2021-02-01 5:10 ` [PATCH v14 05/11] KVM: vmx/pmu: Create a guest LBR event when vcpu sets DEBUGCTLMSR_LBR Like Xu
2021-02-01 5:10 ` [PATCH v14 06/11] KVM: vmx/pmu: Pass-through LBR msrs when the guest LBR event is ACTIVE Like Xu
2021-02-01 5:10 ` [PATCH v14 07/11] KVM: vmx/pmu: Reduce the overhead of LBR pass-through or cancellation Like Xu
2021-02-01 5:10 ` [PATCH v14 08/11] KVM: vmx/pmu: Emulate legacy freezing LBRs on virtual PMI Like Xu
2021-02-01 5:10 ` [PATCH v14 09/11] KVM: vmx/pmu: Release guest LBR event via lazy release mechanism Like Xu
2021-02-01 5:10 ` [PATCH v14 10/11] KVM: vmx/pmu: Expose LBR_FMT in the MSR_IA32_PERF_CAPABILITIES Like Xu
2021-02-01 5:10 ` [PATCH v14 11/11] selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES Like Xu
2021-02-01 6:01 ` [PATCH v14 07/11] KVM: vmx/pmu: Reduce the overhead of LBR pass-through or cancellation Like Xu
2021-02-01 6:01 ` [PATCH v14 08/11] KVM: vmx/pmu: Emulate legacy freezing LBRs on virtual PMI Like Xu
2021-02-01 6:01 ` [PATCH v14 09/11] KVM: vmx/pmu: Release guest LBR event via lazy release mechanism Like Xu
2021-02-01 6:01 ` [PATCH v14 10/11] KVM: vmx/pmu: Expose LBR_FMT in the MSR_IA32_PERF_CAPABILITIES Like Xu
2021-02-01 6:01 ` [PATCH v14 11/11] selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES Like Xu
2021-02-02 14:53 ` Paolo Bonzini
2021-02-02 12:37 ` [PATCH v14 00/11] KVM: x86/pmu: Guest Last Branch Recording Enabling Paolo Bonzini
2021-07-29 12:40 ` Liuxiangdong
2021-07-30 3:15 ` Liuxiangdong
2021-07-30 3:28 ` Like Xu
2022-09-13 23:42 ` Jim Mattson
2022-09-19 7:26 ` Like Xu
2022-09-19 18:08 ` Jim Mattson
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