On Fri, Aug 21, 2020 at 10:09:01AM +0200, Paolo Bonzini wrote: > One more MSR *is* a big deal: KVM's vmentry+vmexit cost is around 1000 > cycles, adding 100 clock cycles for 2 WRMSRs is a 10% increase.
The kernel uses TSC_AUX so we can't reserve it to KVM either.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
