From: Akihiko Odaki <akihiko.odaki@daynix.com>
To: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Andrew Jones <andrew.jones@linux.dev>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-kernel@vger.kernel.org, devel@daynix.com,
Akihiko Odaki <akihiko.odaki@daynix.com>
Subject: [PATCH v4 6/7] KVM: arm64: PMU: Reload PMCNTENSET_EL0
Date: Thu, 13 Mar 2025 15:57:47 +0900 [thread overview]
Message-ID: <20250313-pmc-v4-6-2c976827118c@daynix.com> (raw)
In-Reply-To: <20250313-pmc-v4-0-2c976827118c@daynix.com>
Disable counters that are no longer included in PMCNTENSET_EL0. It is
not necessary to enable counters included in PMCNTENSET_EL0 because
kvm_pmu_handle_pmcr() does so if appropriate.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
arch/arm64/kvm/pmu-emul.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index 461c76a9cb6b..dfa7048a3e2a 100644
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -835,6 +835,7 @@ void kvm_vcpu_reload_pmu(struct kvm_vcpu *vcpu)
__vcpu_sys_reg(vcpu, PMINTENSET_EL1) &= mask;
__vcpu_sys_reg(vcpu, PMCNTENSET_EL0) &= mask;
+ kvm_pmu_disable_counter_mask(vcpu, ~__vcpu_sys_reg(vcpu, PMCNTENSET_EL0));
kvm_pmu_handle_pmcr(vcpu, kvm_vcpu_read_pmcr(vcpu));
}
--
2.48.1
next prev parent reply other threads:[~2025-03-13 7:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-13 6:57 [PATCH v4 0/7] KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs Akihiko Odaki
2025-03-13 6:57 ` [PATCH v4 1/7] KVM: arm64: PMU: Set raw values from user to PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} Akihiko Odaki
2025-03-13 6:57 ` [PATCH v4 2/7] KVM: arm64: PMU: Assume PMU presence in pmu-emul.c Akihiko Odaki
2025-03-13 6:57 ` [PATCH v4 3/7] KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs Akihiko Odaki
2025-03-13 6:57 ` [PATCH v4 4/7] KVM: arm64: PMU: Reload when user modifies registers Akihiko Odaki
2025-03-13 6:57 ` [PATCH v4 5/7] KVM: arm64: PMU: Call kvm_pmu_handle_pmcr() after masking PMCNTENSET_EL0 Akihiko Odaki
2025-03-13 6:57 ` Akihiko Odaki [this message]
2025-03-13 6:57 ` [PATCH v4 7/7] KVM: arm64: PMU: Reload when resetting Akihiko Odaki
2025-03-14 8:10 ` [PATCH v4 0/7] KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs Oliver Upton
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