Re: [PATCH 00/15] KVM: nVMX: Optimize nested VM-Entry

Paolo Bonzini
2019-06-06T16:54:33Z

On 07/05/19 18:06, Sean Christopherson wrote:
> The majority of patches in this series are loosely related optimizations
> to pick off low(ish) hanging fruit in nested VM-Entry, e.g. there are
> many VMREADs and VMWRITEs that can be optimized away without too much
> effort.
>
> The major change (in terms of performance) is to not "put" the vCPU
> state when switching between vmcs01 and vmcs02, which can reudce the
> latency of a nested VM-Entry by upwards of 1000 cycles.
>
> A few bug fixes are prepended as they touch code that happens to be
> modified by the various optimizations.

I've queued the patches locally, but it will be a few days before I can
give them adequate testing so I have not yet pushed them to kvm/queue.

Paolo