linux-kernel - [PATCH 5.10 090/121] KVM: x86/pmu: Use AMD64_RAW_EVENT_MASK for PERF_TYPE

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Message-Id: <20220221084924.244292221@linuxfoundation.org>
Date:   Mon, 21 Feb 2022 09:49:42 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jim Mattson <jmattson@...gle.com>,
        David Dunn <daviddunn@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 090/121] KVM: x86/pmu: Use AMD64_RAW_EVENT_MASK for PERF_TYPE_RAW

From: Jim Mattson <jmattson@...gle.com>

[ Upstream commit 710c476514313c74045c41c0571bb5178fd16e3d ]

AMD's event select is 3 nybbles, with the high nybble in bits 35:32 of
a PerfEvtSeln MSR. Don't mask off the high nybble when configuring a
RAW perf event.

Fixes: ca724305a2b0 ("KVM: x86/vPMU: Implement AMD vPMU code for KVM")
Signed-off-by: Jim Mattson <jmattson@...gle.com>
Message-Id: <20220203014813.2130559-2-jmattson@...gle.com>
Reviewed-by: David Dunn <daviddunn@...gle.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/x86/kvm/pmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 2d91e39dbdf67..2f83b5d948b33 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -214,7 +214,7 @@ void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel)
 	}
 
 	if (type == PERF_TYPE_RAW)
-		config = eventsel & X86_RAW_EVENT_MASK;
+		config = eventsel & AMD64_RAW_EVENT_MASK;
 
 	if (pmc->current_config == eventsel && pmc_resume_counter(pmc))
 		return;
-- 
2.34.1