Messages in this thread | | | Subject | Re: [RESEND v13 00/10] KVM: x86/pmu: Guest Last Branch Recording Enabling | From | Alex Shi <> | Date | Fri, 15 Jan 2021 16:19:06 +0800 |
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在 2021/1/8 上午9:36, Like Xu 写道: > Because saving/restoring tens of LBR MSRs (e.g. 32 LBR stack entries) in > VMX transition brings too excessive overhead to frequent vmx transition > itself, the guest LBR event would help save/restore the LBR stack msrs > during the context switching with the help of native LBR event callstack > mechanism, including LBR_SELECT msr. >
Sounds the feature is much helpful for VMM guest performance tunning. Good job!
Thanks Alex
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