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

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Date:   Tue, 24 Oct 2023 15:57:47 +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 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 add code to validate this new fixed counter.

Signed-off-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
---
 x86/pmu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/x86/pmu.c b/x86/pmu.c
index 1bebf493d4a4..41165e168d8e 100644
--- a/x86/pmu.c
+++ b/x86/pmu.c
@@ -46,7 +46,8 @@ struct pmu_event {
 }, fixed_events[] = {
 	{"fixed 1", MSR_CORE_PERF_FIXED_CTR0, 10*N, 10.2*N},
 	{"fixed 2", MSR_CORE_PERF_FIXED_CTR0 + 1, 1*N, 30*N},
-	{"fixed 3", MSR_CORE_PERF_FIXED_CTR0 + 2, 0.1*N, 30*N}
+	{"fixed 3", MSR_CORE_PERF_FIXED_CTR0 + 2, 0.1*N, 30*N},
+	{"fixed 4", MSR_CORE_PERF_FIXED_CTR0 + 3, 1*N, 100*N}
 };
 
 char *buf;
-- 
2.34.1