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,
Jim Mattson <jmattson@google.com>,
Mingwei Zhang <mizhang@google.com>,
Zide Chen <zide.chen@intel.com>,
Das Sandipan <Sandipan.Das@amd.com>,
Shukla Manali <Manali.Shukla@amd.com>,
Xiaoyao Li <xiaoyao.li@intel.com>,
Dapeng Mi <dapeng1.mi@intel.com>,
dongsheng <dongsheng.x.zhang@intel.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>,
Yi Lai <yi1.lai@intel.com>
Subject: [kvm-unit-tests patch v3 6/8] x86/pmu: Expand "llc references" upper limit for broader compatibility
Date: Wed, 3 Sep 2025 14:45:59 +0800 [thread overview]
Message-ID: <20250903064601.32131-7-dapeng1.mi@linux.intel.com> (raw)
In-Reply-To: <20250903064601.32131-1-dapeng1.mi@linux.intel.com>
From: dongsheng <dongsheng.x.zhang@intel.com>
Increase the upper limit of the "llc references" test to accommodate
results observed on additional Intel CPU models, including CWF and
SRF.
These CPUs exhibited higher reference counts that previously caused
the test to fail.
Signed-off-by: dongsheng <dongsheng.x.zhang@intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Tested-by: Yi Lai <yi1.lai@intel.com>
---
x86/pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/x86/pmu.c b/x86/pmu.c
index 6bf6eee3..49d25f68 100644
--- a/x86/pmu.c
+++ b/x86/pmu.c
@@ -116,7 +116,7 @@ struct pmu_event {
{"core cycles", 0x003c, 1*N, 50*N},
{"instructions", 0x00c0, 10*N, 10.2*N},
{"ref cycles", 0x013c, 1*N, 30*N},
- {"llc references", 0x4f2e, 1, 2*N},
+ {"llc references", 0x4f2e, 1, 2.5*N},
{"llc misses", 0x412e, 1, 1*N},
{"branches", 0x00c4, 1*N, 1.1*N},
{"branch misses", 0x00c5, 1, 0.1*N},
--
2.34.1
next prev parent reply other threads:[~2025-09-03 6:47 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-03 6:45 [kvm-unit-tests patch v3 0/8] Fix pmu test errors on GNR/SRF/CWF Dapeng Mi
2025-09-03 6:45 ` [kvm-unit-tests patch v3 1/8] x86/pmu: Add helper to detect Intel overcount issues Dapeng Mi
2025-11-20 22:27 ` Sean Christopherson
2025-11-21 1:18 ` Mi, Dapeng
2025-09-03 6:45 ` [kvm-unit-tests patch v3 2/8] x86/pmu: Relax precise count validation for Intel overcounted platforms Dapeng Mi
2025-09-03 6:45 ` [kvm-unit-tests patch v3 3/8] x86/pmu: Fix incorrect masking of fixed counters Dapeng Mi
2025-11-20 22:28 ` Sean Christopherson
2025-11-21 1:25 ` Mi, Dapeng
2025-09-03 6:45 ` [kvm-unit-tests patch v3 4/8] x86/pmu: Handle instruction overcount issue in overflow test Dapeng Mi
2025-09-03 6:45 ` [kvm-unit-tests patch v3 5/8] x86/pmu: Relax precise count check for emulated instructions tests Dapeng Mi
2025-11-20 22:29 ` Sean Christopherson
2025-11-21 0:53 ` Mi, Dapeng
2025-09-03 6:45 ` Dapeng Mi [this message]
2025-09-03 6:46 ` [kvm-unit-tests patch v3 7/8] x86: pmu_pebs: Remove abundant data_cfg_match calculation Dapeng Mi
2025-09-03 6:46 ` [kvm-unit-tests patch v3 8/8] x86: pmu_pebs: Support to validate timed PEBS record on GNR/SRF Dapeng Mi
2025-11-20 22:30 ` [kvm-unit-tests patch v3 0/8] Fix pmu test errors on GNR/SRF/CWF Sean Christopherson
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