linux-kernel - [kvm-unit-tests Patch v2 4/5] x86: pmu: Support validation for Intel PMU fixed counter 3

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Message-Id: <20231031092921.2885109-5-dapeng1.mi@linux.intel.com>
Date:   Tue, 31 Oct 2023 17:29:20 +0800
From:   Dapeng Mi <dapeng1.mi@...ux.intel.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhang Xiong <xiong.y.zhang@...el.com>,
        Jim Mattson <jmattson@...gle.com>,
        Mingwei Zhang <mizhang@...gle.com>,
        Like Xu <like.xu.linux@...il.com>,
        Dapeng Mi <dapeng1.mi@...el.com>,
        Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: [kvm-unit-tests Patch v2 4/5] x86: pmu: Support validation for Intel PMU fixed counter 3

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@...ux.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