The virtual counter value is updated during pmu_ctr_read. There is no need
to update it in reset case. Otherwise, it will be counted twice which is
incorrect.
Fixes: 0cb74b65d2e5 ("RISC-V: KVM: Implement perf support without sampling")
Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx>
---
arch/riscv/kvm/vcpu_pmu.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/riscv/kvm/vcpu_pmu.c b/arch/riscv/kvm/vcpu_pmu.c
index 86391a5061dd..8c44f26e754d 100644
--- a/arch/riscv/kvm/vcpu_pmu.c
+++ b/arch/riscv/kvm/vcpu_pmu.c
@@ -432,12 +432,9 @@ int kvm_riscv_vcpu_pmu_ctr_stop(struct kvm_vcpu *vcpu, unsigned long ctr_base,
sbiret = SBI_ERR_ALREADY_STOPPED;
}
- if (flags & SBI_PMU_STOP_FLAG_RESET) {
- /* Relase the counter if this is a reset request */
- pmc->counter_val += perf_event_read_value(pmc->perf_event,
- &enabled, &running);
+ if (flags & SBI_PMU_STOP_FLAG_RESET)
+ /* Release the counter if this is a reset request */
kvm_pmu_release_perf_event(pmc);
- }
} else {
sbiret = SBI_ERR_INVALID_PARAM;
}
--
2.34.1
