> On Mar 21, 2017, at 9:58 AM, Radim Krčmář <rkrcmar@xxxxxxxxxx> wrote: > In '-smp 2', the writing VCPU always does 10000 wakeups by writing into > monitored memory, but the mwaiting VCPU can be also woken up by host > interrupts, which might add a few exits depending on timing. > > I didn't spend much time in making the PASS/FAIL mean much, or ensuring > that we only get 10000 wakeups ... it is nothing to be worried about. > > Hint 240 behaves as nop even on my system, so I still don't find > anything insane on that machine (if OS X is exluded) ... >From my days in Intel (10 years ago), I can say that MWAIT wakes for many microarchitecural events beside interrupts. Out of curiosity, aren’t you worried that on OS X the wbinvd causes an exit after the monitor and before the mwait?
