[PATCH v3 1/9] perf/x86/intel: Fix a comment about guest LBR support

Like Xu
2021-03-03T18:11:45Z

Starting from v5.12, KVM reports guest LBR and extra_regs
support when the host has relevant support.

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

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index d4569bfa83e3..a32acc7733a7 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5565,7 +5565,7 @@ __init int intel_pmu_init(void)

/*
* Access LBR MSR may cause #GP under certain circumstances.
- * E.g. KVM doesn't support LBR MSR
+ * E.g. KVM doesn't support LBR MSR before v5.12.
* Check all LBT MSR here.
* Disable LBR access if any LBR MSRs can not be accessed.
*/
--
2.29.2