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(parent: 384d379) | patch
perf/x86/lbr: Reset LBR_SELECT during vlbr reset
authorWanpeng Li <wanpengli@tencent.com>
Fri, 5 Nov 2021 07:20:51 +0000 (00:20 -0700)
committerPeter Zijlstra <peterz@infradead.org>
Thu, 11 Nov 2021 12:09:34 +0000 (13:09 +0100)
commitddac560a66168a526e9955a9741a3144b161fada
tree38f2d76d8e3220622b11e4956480885c4fd04fe1tree | snapshot
parent384d379616191cf9c80fdc5c52fa55fa2c58a3a0commit | diff
perf/x86/lbr: Reset LBR_SELECT during vlbr reset

lbr_select in kvm guest has residual data even if kvm guest is poweroff.
We can get residual data in the next boot. Because lbr_select is not
reset during kvm vlbr release. Let's reset LBR_SELECT during vlbr reset.

Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1636096851-36623-1-git-send-email-wanpengli@tencent.com
arch/x86/events/intel/lbr.c diff | blob | history
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