Re: Seeking a KVM benchmark

Paolo Bonzini
2014-11-17T12:04:24Z

On 17/11/2014 13:00, Wanpeng Li wrote:
> Sorry, maybe I didn't state my question clearly. As Avi mentioned above
> "In VMX we have VPIDs, so we only need to flush if EFER changed between
> two invocations of the same VPID", so there is only one VPID if the
> guest is UP, my question is if there need a TLB flush when guest's EFER
> has been changed?

Yes, because the meaning of the page table entries has changed.

Paolo