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From: Zide Chen <zide.chen@intel.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>
Cc: kvm@vger.kernel.org, Jim Mattson <jmattson@google.com>,
	Yosry Ahmed <yosry@kernel.org>, Andi Kleen <ak@linux.intel.com>,
	Stephane Eranian <eranian@google.com>,
	linux-kernel@vger.kernel.org, Mingwei Zhang <mizhang@google.com>,
	Zide Chen <zide.chen@intel.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: [PATCH v4 03/21] KVM: x86/pmu: Rename all_valid_pmc_idx to pmc_exists
Date: Thu, 12 Nov 2026 13:32:09 -0700	[thread overview]
Message-ID: <20261112203227.289379-4-zide.chen@intel.com> (raw)
In-Reply-To: <20261112203227.289379-1-zide.chen@intel.com>

all_valid_pmc_idx is a bitmap of valid PMC indices, not an index
itself; rename it to pmc_exists to better reflect what it holds and
keep the name consistent with other fields in the same struct.

No functional change intended.

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>
---
v2:
- Pick the name pmc_exists other than all_valid_pmc_mask. (Sean)
---
 arch/x86/include/asm/kvm_host.h |  2 +-
 arch/x86/kvm/pmu.c              | 10 +++++-----
 arch/x86/kvm/vmx/pmu_intel.c    |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e2eef7057bd3..72b8fbf432a2 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -595,7 +595,7 @@ struct kvm_pmu {
 		DECLARE_BITMAP(reprogram_pmi, X86_PMC_IDX_MAX);
 		atomic64_t __reprogram_pmi;
 	};
-	DECLARE_BITMAP(all_valid_pmc_idx, X86_PMC_IDX_MAX);
+	DECLARE_BITMAP(pmc_exists, X86_PMC_IDX_MAX);
 	DECLARE_BITMAP(pmc_in_use, X86_PMC_IDX_MAX);
 
 	DECLARE_BITMAP(pmc_counting_instructions, X86_PMC_IDX_MAX);
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index eef2f792dc9e..83883191d124 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -944,7 +944,7 @@ static void kvm_pmu_reset(struct kvm_vcpu *vcpu)
 	bitmap_zero(pmu->reprogram_pmi, X86_PMC_IDX_MAX);
 	bitmap_zero(pmu->pmc_has_mode_specific_enables, X86_PMC_IDX_MAX);
 
-	kvm_for_each_pmc(pmu, pmc, i, pmu->all_valid_pmc_idx) {
+	kvm_for_each_pmc(pmu, pmc, i, pmu->pmc_exists) {
 		pmc_stop_counter(pmc);
 		pmc->counter = 0;
 		pmc->emulated_counter = 0;
@@ -990,7 +990,7 @@ void kvm_pmu_refresh(struct kvm_vcpu *vcpu)
 	pmu->fixed_ctr_ctrl_rsvd = ~0ull;
 	pmu->pebs_enable_rsvd = ~0ull;
 	pmu->pebs_data_cfg_rsvd = ~0ull;
-	bitmap_zero(pmu->all_valid_pmc_idx, X86_PMC_IDX_MAX);
+	bitmap_zero(pmu->pmc_exists, X86_PMC_IDX_MAX);
 
 	if (!vcpu->kvm->arch.enable_pmu)
 		return;
@@ -1011,8 +1011,8 @@ void kvm_pmu_refresh(struct kvm_vcpu *vcpu)
 	if (kvm_vcpu_has_mediated_pmu(vcpu))
 		kvm_pmu_call(write_global_ctrl)(pmu->global_ctrl);
 
-	bitmap_set(pmu->all_valid_pmc_idx, 0, pmu->nr_arch_gp_counters);
-	bitmap_set(pmu->all_valid_pmc_idx, KVM_FIXED_PMC_BASE_IDX,
+	bitmap_set(pmu->pmc_exists, 0, pmu->nr_arch_gp_counters);
+	bitmap_set(pmu->pmc_exists, KVM_FIXED_PMC_BASE_IDX,
 		   pmu->nr_arch_fixed_counters);
 }
 
@@ -1034,7 +1034,7 @@ void kvm_pmu_cleanup(struct kvm_vcpu *vcpu)
 
 	pmu->need_cleanup = false;
 
-	bitmap_andnot(bitmask, pmu->all_valid_pmc_idx,
+	bitmap_andnot(bitmask, pmu->pmc_exists,
 		      pmu->pmc_in_use, X86_PMC_IDX_MAX);
 
 	kvm_for_each_pmc(pmu, pmc, i, bitmask) {
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index 36d91215f42a..ee18899614a1 100644
--- a/arch/x86/kvm/vmx/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
@@ -560,7 +560,7 @@ static void intel_pmu_refresh(struct kvm_vcpu *vcpu)
 		lbr_desc->records.nr = 0;
 
 	if (lbr_desc->records.nr)
-		bitmap_set(pmu->all_valid_pmc_idx, INTEL_PMC_IDX_FIXED_VLBR, 1);
+		bitmap_set(pmu->pmc_exists, INTEL_PMC_IDX_FIXED_VLBR, 1);
 
 	if (pmu->version == 1)
 		return;
-- 
2.56.1


  parent reply	other threads:[~2026-11-12 20:43 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-12 20:32 [PATCH v4 00/21] KVM: x86/pmu: Add mediated vPMU PerfMon v5 support Zide Chen
2026-11-12 20:32 ` [PATCH v4 01/21] KVM: SVM: Drop counter MSR checks in amd_is_valid_msr() Zide Chen
2026-11-12 20:32 ` [PATCH v4 02/21] KVM: x86/pmu: Remove redundant Perf Global Status MSR bit definitions Zide Chen
2026-11-12 20:32 ` Zide Chen [this message]
2026-11-12 20:32 ` [PATCH v4 04/21] KVM: x86/pmu: Rename reserved_bits to eventsel_rsvd in kvm_pmu Zide Chen
2026-11-12 20:32 ` [PATCH v4 05/21] KVM: x86/pmu: Use pmc_exists in PMC lookup helpers Zide Chen
2026-11-12 20:32 ` [PATCH v4 06/21] KVM: x86/pmu: Drop nr_arch_{gp,fixed}_counters from kvm_pmu Zide Chen
2026-11-12 20:32 ` [PATCH v4 07/21] KVM: x86/pmu: Expose kvm_host_pmu to vendor modules Zide Chen
2026-11-12 20:32 ` [PATCH v4 08/21] perf/x86: Plumb counter bitmap from x86_pmu to x86_pmu_cap Zide Chen
2026-11-12 20:32 ` [PATCH v4 09/21] KVM: x86/pmu: Switch to bitmask-based KVM PMU capabilities Zide Chen
2026-11-12 20:32 ` [PATCH v4 10/21] perf/x86: Remove num_counters_{gp,fixed} from x86_pmu_capability Zide Chen
2026-11-12 20:32 ` [PATCH v4 11/21] KVM: x86/pmu: Document GLOBAL_STATUS_RESET passthrough erratum Zide Chen
2026-11-12 20:32 ` [PATCH v4 12/21] KVM: x86/pmu: Mark CondChgd reserved in global_status_rsvd Zide Chen
2026-11-12 20:32 ` [PATCH v4 13/21] KVM: x86/pmu: Emulate IA32_PERF_GLOBAL_STATUS_SET MSR Zide Chen
2026-11-12 20:32 ` [PATCH v4 14/21] KVM: x86/pmu: Emulate IA32_PERF_GLOBAL_INUSE MSR Zide Chen
2026-11-12 20:32 ` [PATCH v4 15/21] KVM: x86/pmu: Clamp pmu->version to kvm_pmu_cap.version Zide Chen
2026-11-12 20:32 ` [PATCH v4 16/21] KVM: x86/pmu: Populate CPUID.0AH:ECX fixed-counter bitmap Zide Chen
2026-11-12 20:32 ` [PATCH v4 17/21] KVM: x86/pmu: Factor out fixed counter control bit calculation Zide Chen
2026-11-12 20:32 ` [PATCH v4 18/21] KVM: x86/pmu: Mask only OS/USR bits when filtering fixed counters Zide Chen
2026-11-12 20:32 ` [PATCH v4 19/21] KVM: x86/pmu: Ignore AnyThread bit if CPUID.0AH:EDX[15] is set Zide Chen
2026-11-12 20:32 ` [PATCH v4 20/21] KVM: x86/pmu: Advertise PerfMon version 5 on Intel hosts Zide Chen
2026-11-12 20:32 ` [PATCH v4 21/21] KVM: selftests: Support fixed counters bitmap in pmu_counters_test Zide Chen
2026-11-12 21:00   ` sashiko-bot

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