From: Yosry Ahmed <yosry@kernel.org>
To: Zide Chen <zide.chen@intel.com>
Cc: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
kvm@vger.kernel.org, Jim Mattson <jmattson@google.com>,
Andi Kleen <ak@linux.intel.com>,
Stephane Eranian <eranian@google.com>,
linux-kernel@vger.kernel.org, Mingwei Zhang <mizhang@google.com>,
Das Sandipan <Sandipan.Das@amd.com>,
Shukla Manali <Manali.Shukla@amd.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>,
Xudong Hao <xudong.hao@intel.com>
Subject: Re: [PATCH v3 06/18] KVM: x86/pmu: Expose kvm_host_pmu to vendor modules
Date: Fri, 6 Nov 2026 19:37:01 +0000 [thread overview]
Message-ID: <au4sVx7xzzGjVHST@google.com> (raw)
In-Reply-To: <20261106013927.166209-7-zide.chen@intel.com>
On Thu, Nov 05, 2026 at 06:39:15PM -0700, Zide Chen wrote:
> kvm_host_pmu holds the unadulterated host PMU capabilities, which
> can be used to compare against guest capabilities to determine whether
> certain MSRs should be intercepted by KVM.
>
> Exposing it directly avoids the need to introduce per-field accessors,
> which would add boilerplate without hiding any implementation detail
> worth encapsulating.
>
> Opportunistically, fix typo "Unadultered" in the comment.
>
> Signed-off-by: Zide Chen <zide.chen@intel.com>
> Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
> Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Yosry Ahmed <yosry@kernel.org>
next prev parent reply other threads:[~2026-11-06 19:37 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 1:39 [PATCH v3 00/18] KVM: x86/pmu: Add mediated vPMU PerfMon v5 support Zide Chen
2026-11-06 1:39 ` [PATCH v3 01/18] KVM: x86/pmu: Remove redundant Perf Global Status MSR bit definitions Zide Chen
2026-11-06 18:19 ` Yosry Ahmed
2026-11-06 1:39 ` [PATCH v3 02/18] KVM: x86/pmu: Rename all_valid_pmc_idx to pmc_exists Zide Chen
2026-11-06 18:21 ` Yosry Ahmed
2026-11-06 1:39 ` [PATCH v3 03/18] KVM: x86/pmu: Rename reserved_bits to eventsel_rsvd in kvm_pmu Zide Chen
2026-11-06 18:37 ` Yosry Ahmed
2026-11-06 21:16 ` Chen, Zide
2026-11-06 22:38 ` Yosry Ahmed
2026-11-06 1:39 ` [PATCH v3 04/18] KVM: x86/pmu: Add PMC bitmap accessor helpers Zide Chen
2026-11-06 19:09 ` Yosry Ahmed
2026-11-06 22:19 ` Chen, Zide
2026-11-06 22:35 ` Yosry Ahmed
2026-11-09 7:53 ` Mi, Dapeng
2026-11-09 17:56 ` Chen, Zide
2026-11-09 17:55 ` Chen, Zide
2026-11-09 18:07 ` Yosry Ahmed
2026-11-09 18:59 ` Chen, Zide
2026-11-09 21:12 ` Yosry Ahmed
2026-11-09 21:59 ` Chen, Zide
2026-11-09 22:07 ` Yosry Ahmed
2026-11-09 22:26 ` Chen, Zide
2026-11-06 1:39 ` [PATCH v3 05/18] KVM: x86/pmu: Drop nr_arch_{gp,fixed}_counters from kvm_pmu Zide Chen
2026-11-06 19:34 ` Yosry Ahmed
2026-11-07 0:42 ` Jim Mattson
2026-11-07 2:26 ` Yosry Ahmed
2026-11-09 22:42 ` Chen, Zide
2026-11-09 22:47 ` Chen, Zide
2026-11-06 1:39 ` [PATCH v3 06/18] KVM: x86/pmu: Expose kvm_host_pmu to vendor modules Zide Chen
2026-11-06 19:37 ` Yosry Ahmed [this message]
2026-11-06 1:39 ` [PATCH v3 07/18] perf/x86: Plumb counter bitmap from x86_pmu to x86_pmu_cap Zide Chen
2026-11-06 1:39 ` [PATCH v3 08/18] KVM: x86/pmu: Switch to bitmask-based KVM PMU capabilities Zide Chen
2026-11-06 20:05 ` Yosry Ahmed
2026-11-09 21:22 ` Chen, Zide
2026-11-09 20:50 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 09/18] perf/x86: Remove num_counters_{gp,fixed} from x86_pmu_capability Zide Chen
2026-11-06 1:39 ` [PATCH v3 10/18] KVM: x86/pmu: Document GLOBAL_STATUS_RESET passthrough erratum Zide Chen
2026-11-06 20:14 ` Yosry Ahmed
2026-11-10 0:41 ` Chen, Zide
2026-11-09 20:51 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 11/18] KVM: x86/pmu: Emulate IA32_PERF_GLOBAL_STATUS_SET MSR Zide Chen
2026-11-06 20:35 ` Yosry Ahmed
2026-11-09 23:44 ` Chen, Zide
2026-11-09 20:53 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 12/18] KVM: x86/pmu: Emulate IA32_PERF_GLOBAL_INUSE MSR Zide Chen
2026-11-09 20:54 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 13/18] KVM: x86/pmu: Populate CPUID.0AH:ECX fixed-counter bitmap Zide Chen
2026-11-06 21:00 ` Yosry Ahmed
2026-11-09 20:41 ` Chen, Zide
2026-11-10 6:28 ` Mi, Dapeng
2026-11-10 16:29 ` Chen, Zide
2026-11-10 22:56 ` Chen, Zide
2026-11-11 0:25 ` Mi, Dapeng
2026-11-11 3:28 ` Chen, Zide
2026-11-11 15:37 ` Sean Christopherson
2026-11-11 17:06 ` Chen, Zide
2026-11-12 17:09 ` Sean Christopherson
2026-11-12 17:47 ` Chen, Zide
2026-11-06 1:39 ` [PATCH v3 14/18] KVM: x86/pmu: Factor out fixed counter control bit calculation Zide Chen
2026-11-06 1:39 ` [PATCH v3 15/18] KVM: x86/pmu: Mask only OS/USR bits when filtering fixed counters Zide Chen
2026-11-06 21:19 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 16/18] KVM: x86/pmu: Ignore AnyThread bit if CPUID.0AH:EDX[15] is set Zide Chen
2026-11-09 20:56 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 17/18] KVM: x86/pmu: Advertise PerfMon version 5 on Intel hosts Zide Chen
2026-11-06 21:20 ` Jim Mattson
2026-11-06 1:39 ` [PATCH v3 18/18] KVM: selftests: Support fixed counters bitmap in pmu_counters_test Zide Chen
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