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

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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>
Message-Id: <20220517154100.29983-2-weijiang.yang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Like Xu 2022-05-17 11:40:45 -04:00 committed by Paolo Bonzini
parent 2f4073e08f
commit 92d80178a3
1 changed files with 1 additions and 2 deletions
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3
arch/x86/events/intel/core.c
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@ -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))