From: Dapeng Mi <dapeng1.mi@linux.intel.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Zhenyu Wang <zhenyuw@linux.intel.com>,
Zhang Xiong <xiong.y.zhang@intel.com>,
Jim Mattson <jmattson@google.com>,
Mingwei Zhang <mizhang@google.com>,
Like Xu <like.xu.linux@gmail.com>,
Dapeng Mi <dapeng1.mi@intel.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>
Subject: [kvm-unit-tests Patch v2 4/5] x86: pmu: Support validation for Intel PMU fixed counter 3
Date: Tue, 31 Oct 2023 17:29:20 +0800 [thread overview]
Message-ID: <20231031092921.2885109-5-dapeng1.mi@linux.intel.com> (raw)
In-Reply-To: <20231031092921.2885109-1-dapeng1.mi@linux.intel.com>
Intel CPUs, like Sapphire Rapids, introduces a new fixed counter
(fixed counter 3) to counter/sample topdown.slots event, but current
code still doesn't cover this new fixed counter.
So this patch adds code to validate this new fixed counter can count
slots event correctly.
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
---
x86/pmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/x86/pmu.c b/x86/pmu.c
index 6bd8f6d53f55..404dc7b62ac2 100644
--- a/x86/pmu.c
+++ b/x86/pmu.c
@@ -47,6 +47,7 @@ struct pmu_event {
{"fixed 1", MSR_CORE_PERF_FIXED_CTR0, 10*N, 10.2*N},
{"fixed 2", MSR_CORE_PERF_FIXED_CTR0 + 1, 1*N, 500*N},
{"fixed 3", MSR_CORE_PERF_FIXED_CTR0 + 2, 0.1*N, 300*N},
+ {"fixed 4", MSR_CORE_PERF_FIXED_CTR0 + 3, 1*N, 5000*N},
};
char *buf;
--
2.34.1
next prev parent reply other threads:[~2023-10-31 9:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-31 9:29 [kvm-unit-tests Patch v2 0/5] Fix PMU test failures on Sapphire Rapids Dapeng Mi
2023-10-31 9:29 ` [kvm-unit-tests Patch v2 1/5] x86: pmu: Remove duplicate code in pmu_init() Dapeng Mi
2023-11-01 12:51 ` Jim Mattson
2023-10-31 9:29 ` [kvm-unit-tests Patch v2 2/5] x86: pmu: Improve loop() to force to generate llc/branch misses Dapeng Mi
2023-10-31 9:29 ` [kvm-unit-tests Patch v2 3/5] x86: pmu: Enlarge cnt array length to 64 in check_counters_many() Dapeng Mi
2023-10-31 9:29 ` Dapeng Mi [this message]
2023-10-31 18:47 ` [kvm-unit-tests Patch v2 4/5] x86: pmu: Support validation for Intel PMU fixed counter 3 Jim Mattson
2023-11-01 2:33 ` Mi, Dapeng
2023-11-01 2:47 ` Jim Mattson
2023-11-01 3:15 ` Mi, Dapeng
2023-11-01 3:24 ` Jim Mattson
2023-11-01 3:57 ` Mi, Dapeng
2023-11-01 13:51 ` Liang, Kan
2023-10-31 9:29 ` [kvm-unit-tests Patch v2 5/5] x86: pmu: Add asserts to warn inconsistent fixed events and counters Dapeng Mi
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