Re: [PATCH 3/4] KVM: x86: kvm_hv_flush_tlb use inputs from XMM registers

Paolo Bonzini
2021-04-08T12:37:54Z

On 08/04/21 14:01, Vitaly Kuznetsov wrote:
>
> Also, we can probably defer kvm_hv_hypercall_read_xmm() until we know
> how many regs we actually need to not read them all (we will always
> need xmm[0] I guess so we can as well read it here).

The cost is get/put FPU, so I think there's not much to gain from that.

Paolo