linux-kernel - Re: [PATCH v2 0/6] KVM: nVMX: Enlightened VMCS for Hyper-V on KVM

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Message-ID: <87pnzerxsj.fsf@vitty.brq.redhat.com>
Date:   Mon, 23 Jul 2018 13:34:04 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Roman Kagan <rkagan@...tuozzo.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "Michael Kelley \(EOSG\)" <Michael.H.Kelley@...rosoft.com>,
        Mohammed Gamal <mmorsy@...hat.com>,
        Cathy Avery <cavery@...hat.com>, linux-kernel@...r.kernel.org,
        Jim Mattson <jmattson@...gle.com>,
        Liran Alon <liran.alon@...cle.com>
Subject: Re: [PATCH v2 0/6] KVM: nVMX: Enlightened VMCS for Hyper-V on KVM

Vitaly Kuznetsov <vkuznets@...hat.com> writes:

> Changes since v1 [Liran Alon]:
> - Split PATCH2 into two.
> - Add a comment explaining eVMCS versioning.
> - Convert evmcs_needs_write() to inline function.
> - Drop 'unlikely' in vmx_vcpu_run().
> - Add Reviewed-by tags.
>
> Description:
>
> This is an initial implementation of Enlightened VMCS for nested Hyper-V on
> KVM. Using it helps to spare 1500 cpu cycles for nested vmexit (tight cpuid
> loop in WS2016 with Hyper-V role on KVM: 15200 cycles -> 13700
> cycles).

It's been a month, ping :-)

-- 
  Vitaly