diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2021-08-11 08:57:06 +0530 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-08-11 15:33:29 +0100 |
| commit | 6fadc1241c33fe0228c94bc6a1aa6c1da8872e8b (patch) | |
| tree | 720849a3eb988308c7f0561875869d1b64ac4ac2 /arch/arm64/kvm | |
| parent | 013cc4c6788f1ce9885d3c0281904f93ee8f2271 (diff) | |
KVM: arm64: perf: Replace '0xf' instances with ID_AA64DFR0_PMUVER_IMP_DEF
ID_AA64DFR0_PMUVER_IMP_DEF which indicate implementation defined PMU, never
actually gets used although there are '0xf' instances scattered all around.
Just do the macro replacement to improve readability.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: linux-perf-users@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: kvmarm@lists.cs.columbia.edu
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/perf.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kvm/pmu-emul.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm64/kvm/perf.c b/arch/arm64/kvm/perf.c index 151c31fb9860..f9bb3b14130e 100644 --- a/arch/arm64/kvm/perf.c +++ b/arch/arm64/kvm/perf.c @@ -50,7 +50,7 @@ static struct perf_guest_info_callbacks kvm_guest_cbs = { int kvm_perf_init(void) { - if (kvm_pmu_probe_pmuver() != 0xf && !is_protected_kvm_enabled()) + if (kvm_pmu_probe_pmuver() != ID_AA64DFR0_PMUVER_IMP_DEF && !is_protected_kvm_enabled()) static_branch_enable(&kvm_arm_pmu_available); return perf_register_guest_info_callbacks(&kvm_guest_cbs); diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index f33825c995cb..60f89bdbeebb 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -745,7 +745,7 @@ int kvm_pmu_probe_pmuver(void) struct perf_event_attr attr = { }; struct perf_event *event; struct arm_pmu *pmu; - int pmuver = 0xf; + int pmuver = ID_AA64DFR0_PMUVER_IMP_DEF; /* * Create a dummy event that only counts user cycles. As we'll never @@ -770,7 +770,7 @@ int kvm_pmu_probe_pmuver(void) if (IS_ERR(event)) { pr_err_once("kvm: pmu event creation failed %ld\n", PTR_ERR(event)); - return 0xf; + return ID_AA64DFR0_PMUVER_IMP_DEF; } if (event->pmu) { @@ -923,7 +923,7 @@ int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) if (!vcpu->kvm->arch.pmuver) vcpu->kvm->arch.pmuver = kvm_pmu_probe_pmuver(); - if (vcpu->kvm->arch.pmuver == 0xf) + if (vcpu->kvm->arch.pmuver == ID_AA64DFR0_PMUVER_IMP_DEF) return -ENODEV; switch (attr->attr) { |