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>, Yi Lai <yi1.lai@intel.com>,
Dapeng Mi <dapeng1.mi@intel.com>,
dongsheng <dongsheng.x.zhang@intel.com>,
Dapeng Mi <dapeng1.mi@linux.intel.com>
Subject: [kvm-unit-tests patch 5/5] x86/pmu: Expand "llc references" upper limit for broader compatibility
Date: Sat, 12 Jul 2025 17:49:15 +0000 [thread overview]
Message-ID: <20250712174915.196103-6-dapeng1.mi@linux.intel.com> (raw)
In-Reply-To: <20250712174915.196103-1-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 c54c0988..445ea6b4 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},
--
2.43.0
prev parent reply other threads:[~2025-07-15 8:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-12 17:49 [kvm-unit-tests patch 0/5] Fix pmu test errors on SRF/CWF Dapeng Mi
2025-07-12 17:49 ` [kvm-unit-tests patch 1/5] x86/pmu: Add helper to detect Intel overcount issues Dapeng Mi
2025-07-15 13:27 ` Xiaoyao Li
2025-07-16 1:13 ` Mi, Dapeng
2025-07-12 17:49 ` [kvm-unit-tests patch 2/5] x86/pmu: Relax precise count validation for Intel overcounted platforms Dapeng Mi
2025-07-12 17:49 ` [kvm-unit-tests patch 3/5] x86/pmu: Fix incorrect masking of fixed counters Dapeng Mi
2025-07-12 17:49 ` [kvm-unit-tests patch 4/5] x86/pmu: Handle instruction overcount issue in overflow test Dapeng Mi
2025-07-12 17:49 ` Dapeng Mi [this message]
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