6.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Atish Patra <atishp@xxxxxxxxxxxx> [ Upstream commit 57990ab90ce31aadac0d5a6293f5582e24ff7521 ] The initial sample period value when counter value is not assigned should be set to maximum value supported by the counter width. Otherwise, it may result in spurious interrupts. Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx> Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx> Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20240420151741.962500-11-atishp@xxxxxxxxxxxx Signed-off-by: Anup Patel <anup@xxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/riscv/kvm/vcpu_pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kvm/vcpu_pmu.c b/arch/riscv/kvm/vcpu_pmu.c index 86391a5061dda..cee1b9ca4ec48 100644 --- a/arch/riscv/kvm/vcpu_pmu.c +++ b/arch/riscv/kvm/vcpu_pmu.c @@ -39,7 +39,7 @@ static u64 kvm_pmu_get_sample_period(struct kvm_pmc *pmc) u64 sample_period; if (!pmc->counter_val) - sample_period = counter_val_mask + 1; + sample_period = counter_val_mask; else sample_period = (-pmc->counter_val) & counter_val_mask; -- 2.43.0
