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From: Jim Mattson <jmattson@google.com>
To: kvm@vger.kernel.org, "'Paolo Bonzini '" <pbonzini@redhat.com>,
	 "'Sean Christopherson '" <seanjc@google.com>
Cc: Jim Mattson <jmattson@google.com>
Subject: [PATCH] KVM: x86: Remove IA32_PERF_GLOBAL_OVF_CTRL from KVM_GET_MSR_INDEX_LIST
Date: Mon, 13 Nov 2023 10:48:54 -0800	[thread overview]
Message-ID: <20231113184854.2344416-1-jmattson@google.com> (raw)

This MSR reads as 0, and any host-initiated writes are ignored, so
there's no reason to enumerate it in KVM_GET_MSR_INDEX_LIST.

Signed-off-by: Jim Mattson <jmattson@google.com>
---
 arch/x86/kvm/x86.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2c924075f6f1..54bcc197b314 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1470,7 +1470,7 @@ static const u32 msrs_to_save_pmu[] = {
 	MSR_ARCH_PERFMON_FIXED_CTR0, MSR_ARCH_PERFMON_FIXED_CTR1,
 	MSR_ARCH_PERFMON_FIXED_CTR0 + 2,
 	MSR_CORE_PERF_FIXED_CTR_CTRL, MSR_CORE_PERF_GLOBAL_STATUS,
-	MSR_CORE_PERF_GLOBAL_CTRL, MSR_CORE_PERF_GLOBAL_OVF_CTRL,
+	MSR_CORE_PERF_GLOBAL_CTRL,
 	MSR_IA32_PEBS_ENABLE, MSR_IA32_DS_AREA, MSR_PEBS_DATA_CFG,
 
 	/* This part of MSRs should match KVM_INTEL_PMC_MAX_GENERIC. */
-- 
2.43.0.rc0.421.g78406f8d94-goog


             reply	other threads:[~2023-11-13 18:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-13 18:48 Jim Mattson [this message]
2023-11-30 20:58 ` [PATCH] KVM: x86: Remove IA32_PERF_GLOBAL_OVF_CTRL from KVM_GET_MSR_INDEX_LIST Sean Christopherson

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