From: Sean Christopherson <seanjc@google.com>
To: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Tianrui Zhao <zhaotianrui@loongson.cn>,
Bibo Mao <maobibo@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Xin Li <xin@zytor.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
kvm@vger.kernel.org, loongarch@lists.linux.dev,
kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Kan Liang <kan.liang@linux.intel.com>,
Yongwei Ma <yongwei.ma@intel.com>,
Mingwei Zhang <mizhang@google.com>,
Xiong Zhang <xiong.y.zhang@linux.intel.com>,
Sandipan Das <sandipan.das@amd.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>
Subject: [PATCH v5 29/44] KVM: x86/pmu: Use BIT_ULL() instead of open coded equivalents
Date: Wed, 6 Aug 2025 12:56:51 -0700 [thread overview]
Message-ID: <20250806195706.1650976-30-seanjc@google.com> (raw)
In-Reply-To: <20250806195706.1650976-1-seanjc@google.com>
From: Dapeng Mi <dapeng1.mi@linux.intel.com>
Replace a variety of "1ull << N" and "(u64)1 << N" snippets with BIT_ULL()
in the PMU code.
No functional change intended.
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
[sean: split to separate patch, write changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/svm/pmu.c | 4 ++--
arch/x86/kvm/vmx/pmu_intel.c | 15 ++++++---------
2 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c
index 96be2c3e0d65..b777c3743304 100644
--- a/arch/x86/kvm/svm/pmu.c
+++ b/arch/x86/kvm/svm/pmu.c
@@ -199,11 +199,11 @@ static void amd_pmu_refresh(struct kvm_vcpu *vcpu)
kvm_pmu_cap.num_counters_gp);
if (pmu->version > 1) {
- pmu->global_ctrl_rsvd = ~((1ull << pmu->nr_arch_gp_counters) - 1);
+ pmu->global_ctrl_rsvd = ~(BIT_ULL(pmu->nr_arch_gp_counters) - 1);
pmu->global_status_rsvd = pmu->global_ctrl_rsvd;
}
- pmu->counter_bitmask[KVM_PMC_GP] = ((u64)1 << 48) - 1;
+ pmu->counter_bitmask[KVM_PMC_GP] = BIT_ULL(48) - 1;
pmu->reserved_bits = 0xfffffff000280000ull;
pmu->raw_event_mask = AMD64_RAW_EVENT_MASK;
/* not applicable to AMD; but clean them to prevent any fall out */
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index 98f7b45ea391..6352d029298c 100644
--- a/arch/x86/kvm/vmx/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
@@ -536,11 +536,10 @@ static void intel_pmu_refresh(struct kvm_vcpu *vcpu)
kvm_pmu_cap.num_counters_gp);
eax.split.bit_width = min_t(int, eax.split.bit_width,
kvm_pmu_cap.bit_width_gp);
- pmu->counter_bitmask[KVM_PMC_GP] = ((u64)1 << eax.split.bit_width) - 1;
+ pmu->counter_bitmask[KVM_PMC_GP] = BIT_ULL(eax.split.bit_width) - 1;
eax.split.mask_length = min_t(int, eax.split.mask_length,
kvm_pmu_cap.events_mask_len);
- pmu->available_event_types = ~entry->ebx &
- ((1ull << eax.split.mask_length) - 1);
+ pmu->available_event_types = ~entry->ebx & (BIT_ULL(eax.split.mask_length) - 1);
if (pmu->version == 1) {
pmu->nr_arch_fixed_counters = 0;
@@ -549,16 +548,15 @@ static void intel_pmu_refresh(struct kvm_vcpu *vcpu)
kvm_pmu_cap.num_counters_fixed);
edx.split.bit_width_fixed = min_t(int, edx.split.bit_width_fixed,
kvm_pmu_cap.bit_width_fixed);
- pmu->counter_bitmask[KVM_PMC_FIXED] =
- ((u64)1 << edx.split.bit_width_fixed) - 1;
+ pmu->counter_bitmask[KVM_PMC_FIXED] = BIT_ULL(edx.split.bit_width_fixed) - 1;
}
intel_pmu_enable_fixed_counter_bits(pmu, INTEL_FIXED_0_KERNEL |
INTEL_FIXED_0_USER |
INTEL_FIXED_0_ENABLE_PMI);
- counter_rsvd = ~(((1ull << pmu->nr_arch_gp_counters) - 1) |
- (((1ull << pmu->nr_arch_fixed_counters) - 1) << KVM_FIXED_PMC_BASE_IDX));
+ counter_rsvd = ~((BIT_ULL(pmu->nr_arch_gp_counters) - 1) |
+ ((BIT_ULL(pmu->nr_arch_fixed_counters) - 1) << KVM_FIXED_PMC_BASE_IDX));
pmu->global_ctrl_rsvd = counter_rsvd;
/*
@@ -603,8 +601,7 @@ static void intel_pmu_refresh(struct kvm_vcpu *vcpu)
pmu->pebs_data_cfg_rsvd = ~0xff00000full;
intel_pmu_enable_fixed_counter_bits(pmu, ICL_FIXED_0_ADAPTIVE);
} else {
- pmu->pebs_enable_rsvd =
- ~((1ull << pmu->nr_arch_gp_counters) - 1);
+ pmu->pebs_enable_rsvd = ~(BIT_ULL(pmu->nr_arch_gp_counters) - 1);
}
}
}
--
2.50.1.565.gc32cd1483b-goog
--
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next prev parent reply other threads:[~2025-08-06 21:16 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-06 19:56 [PATCH v5 00/44] KVM: x86: Add support for mediated vPMUs Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 01/44] perf: Skip pmu_ctx based on event_type Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 02/44] perf: Add generic exclude_guest support Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 03/44] perf: Move security_perf_event_free() call to __free_event() Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 04/44] perf: Add APIs to create/release mediated guest vPMUs Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 05/44] perf: Clean up perf ctx time Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 06/44] perf: Add a EVENT_GUEST flag Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 07/44] perf: Add APIs to load/put guest mediated PMU context Sean Christopherson
2025-08-08 7:30 ` Mi, Dapeng
2025-08-06 19:56 ` [PATCH v5 08/44] perf: core/x86: Register a new vector for handling mediated guest PMIs Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 09/44] perf/x86: Switch LVTPC to/from mediated PMI vector on guest load/put context Sean Christopherson
2025-08-15 11:39 ` Peter Zijlstra
2025-08-15 15:41 ` Sean Christopherson
2025-08-15 15:55 ` Sean Christopherson
2025-08-18 14:32 ` Peter Zijlstra
2025-08-18 15:25 ` Sean Christopherson
2025-08-18 16:12 ` Peter Zijlstra
2025-08-18 20:07 ` Liang, Kan
2025-08-15 13:04 ` Peter Zijlstra
2025-08-15 15:51 ` Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 10/44] perf/x86/core: Do not set bit width for unavailable counters Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 11/44] perf/x86/core: Plumb mediated PMU capability from x86_pmu to x86_pmu_cap Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 12/44] perf/x86/intel: Support PERF_PMU_CAP_MEDIATED_VPMU Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 13/44] perf/x86/amd: Support PERF_PMU_CAP_MEDIATED_VPMU for AMD host Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 14/44] KVM: VMX: Setup canonical VMCS config prior to kvm_x86_vendor_init() Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 15/44] KVM: SVM: Check pmu->version, not enable_pmu, when getting PMC MSRs Sean Christopherson
2025-08-13 9:58 ` Sandipan Das
2025-08-06 19:56 ` [PATCH v5 16/44] KVM: Add a simplified wrapper for registering perf callbacks Sean Christopherson
2025-08-22 10:32 ` Anup Patel
2025-08-06 19:56 ` [PATCH v5 17/44] KVM: x86/pmu: Snapshot host (i.e. perf's) reported PMU capabilities Sean Christopherson
2025-08-13 9:56 ` Sandipan Das
2025-08-06 19:56 ` [PATCH v5 18/44] KVM: x86/pmu: Start stubbing in mediated PMU support Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 19/44] KVM: x86/pmu: Implement Intel mediated PMU requirements and constraints Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 20/44] KVM: x86/pmu: Implement AMD mediated PMU requirements Sean Christopherson
2025-08-13 9:49 ` Sandipan Das
2025-08-06 19:56 ` [PATCH v5 21/44] KVM: x86/pmu: Register PMI handler for mediated vPMU Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 22/44] KVM: x86: Rename vmx_vmentry/vmexit_ctrl() helpers Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 23/44] KVM: x86/pmu: Move PMU_CAP_{FW_WRITES,LBR_FMT} into msr-index.h header Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 24/44] KVM: x86: Rework KVM_REQ_MSR_FILTER_CHANGED into a generic RECALC_INTERCEPTS Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 25/44] KVM: x86: Use KVM_REQ_RECALC_INTERCEPTS to react to CPUID updates Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 26/44] KVM: VMX: Add helpers to toggle/change a bit in VMCS execution controls Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 27/44] KVM: x86/pmu: Disable RDPMC interception for compatible mediated vPMU Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 28/44] KVM: x86/pmu: Load/save GLOBAL_CTRL via entry/exit fields for mediated PMU Sean Christopherson
2025-08-06 19:56 ` Sean Christopherson [this message]
2025-08-06 19:56 ` [PATCH v5 30/44] KVM: x86/pmu: Move initialization of valid PMCs bitmask to common x86 Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 31/44] KVM: x86/pmu: Restrict GLOBAL_{CTRL,STATUS}, fixed PMCs, and PEBS to PMU v2+ Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 32/44] KVM: x86/pmu: Disable interception of select PMU MSRs for mediated vPMUs Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 33/44] KVM: x86/pmu: Bypass perf checks when emulating mediated PMU counter accesses Sean Christopherson
2025-08-13 10:01 ` Sandipan Das
2025-08-06 19:56 ` [PATCH v5 34/44] KVM: x86/pmu: Introduce eventsel_hw to prepare for pmu event filtering Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 35/44] KVM: x86/pmu: Reprogram mediated PMU event selectors on event filter updates Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 36/44] KVM: x86/pmu: Always stuff GuestOnly=1,HostOnly=0 for mediated PMCs on AMD Sean Christopherson
2025-08-06 19:56 ` [PATCH v5 37/44] KVM: x86/pmu: Load/put mediated PMU context when entering/exiting guest Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 38/44] KVM: x86/pmu: Disallow emulation in the fastpath if mediated PMCs are active Sean Christopherson
2025-08-13 9:53 ` Sandipan Das
2025-08-06 19:57 ` [PATCH v5 39/44] KVM: x86/pmu: Handle emulated instruction for mediated vPMU Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 40/44] KVM: nVMX: Add macros to simplify nested MSR interception setting Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 41/44] KVM: nVMX: Disable PMU MSR interception as appropriate while running L2 Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 42/44] KVM: nSVM: " Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 43/44] KVM: x86/pmu: Expose enable_mediated_pmu parameter to user space Sean Christopherson
2025-08-06 19:57 ` [PATCH v5 44/44] KVM: x86/pmu: Elide WRMSRs when loading guest PMCs if values already match Sean Christopherson
2025-08-08 8:28 ` [PATCH v5 00/44] KVM: x86: Add support for mediated vPMUs Mi, Dapeng
2025-08-08 8:35 ` Mi, Dapeng
2025-08-13 9:45 ` Sandipan Das
2025-08-22 8:12 ` Hao, Xudong
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