Commit 92d80178 authored by Like Xu's avatar Like Xu Committed by Paolo Bonzini
Browse files

perf/x86/intel: Fix the comment about guest LBR support on KVM 



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: default avatarKan Liang <kan.liang@linux.intel.com>
Reviewed-by: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarLike Xu <like.xu@linux.intel.com>
Signed-off-by: default avatarYang Weijiang <weijiang.yang@intel.com>
Message-Id: <20220517154100.29983-2-weijiang.yang@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 2f4073e0

arch/x86/events/intel/core.c

+1 −2
Original line number Diff line number Diff line
@@ -6501,8 +6501,7 @@ __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))