[PATCH v6 01/12] perf/x86/intel: Fix the comment about guest LBR support on KVM

From: Yang Weijiang <weijiang.yang@intel.com>
To: pbonzini@redhat.com, jmattson@google.com, seanjc@google.com,
	vkuznets@redhat.com, wei.w.wang@intel.com,
	like.xu.linux@gmail.com, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Like Xu <like.xu@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Yang Weijiang <weijiang.yang@intel.com>
Subject: [PATCH v6 01/12] perf/x86/intel: Fix the comment about guest LBR support on KVM
Date: Fri, 16 Jul 2021 16:49:55 +0800	[thread overview]
Message-ID: <1626425406-18582-2-git-send-email-weijiang.yang@intel.com> (raw)
In-Reply-To: <1626425406-18582-1-git-send-email-weijiang.yang@intel.com>

From: Like Xu <like.xu@linux.intel.com>

Starting from v5.12, KVM reports guest LBR and extra_regs support
when the host has relevant support. Just delete this part of the
comment and fix a typo incidentally.

Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
---
 arch/x86/events/intel/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index e28892270c58..84fdb8a085e5 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -6249,8 +6249,7 @@ __init int intel_pmu_init(void)
 					  x86_pmu.intel_ctrl);
 	/*
 	 * Access LBR MSR may cause #GP under certain circumstances.
-	 * E.g. KVM doesn't support LBR MSR
-	 * Check all LBT MSR here.
+	 * Check all LBR MSR here.
 	 * Disable LBR access if any LBR MSRs can not be accessed.
 	 */
 	if (x86_pmu.lbr_tos && !check_msr(x86_pmu.lbr_tos, 0x3UL))
-- 
2.21.1

