From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH v6 0/7] Enlightened VMCS support for KVM on Hyper-V
Date: Mon, 26 Mar 2018 14:42:46 +0200
Message-ID: <87muyv2ek9.fsf@vitty.brq.redhat.com>
References: <20180320140211.7600-1-vkuznets@redhat.com>
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Cc: x86@kernel.org, kvm@vger.kernel.org,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        "Michael Kelley \(EOSG\)" <Michael.H.Kelley@microsoft.com>,
        Mohammed Gamal <mmorsy@redhat.com>,
        Cathy Avery <cavery@redhat.com>, Bandan Das <bsd@redhat.com>,
        linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Christoph Hellwig <hch@infradead.org>
To: Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20180320140211.7600-1-vkuznets@redhat.com> (Vitaly Kuznetsov's
        message of "Tue, 20 Mar 2018 15:02:04 +0100")
Sender: linux-kernel-owner@vger.kernel.org
List-Id: kvm.vger.kernel.org

Vitaly Kuznetsov <vkuznets@redhat.com> writes:

> Changes since v5:
> - Fix a couple of issues reported by kbuild test robot, both in
>   PATCH7 (hope Radim's Reviewed-by: stands).
>
> When running nested KVM on Hyper-V it's possible to use so called
> 'Enlightened VMCS' and do normal memory reads/writes instead of
> doing VMWRITE/VMREAD instructions. In addition, clean field mask
> provides a huge room for optimization on L0's side.
>
> Tight CPUID loop test shows significant speedup (E5-2667 v4 @ 3.20GHz):
>   Before: 18890 cycles
>   After: 8304 cycles
>

Paolo, Radim,

with Thomas' ACK on the series:
https://www.spinics.net/lists/kvm/msg166309.html

is there anything else needed for it to get merged (hoping for 4.17)?

Thanks,

-- 
  Vitaly