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) inSounds the feature is much helpful for VMM guest performance tunning.
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.
Good job!
Thanks
Alex