From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68702ECDE5F for ; Mon, 23 Jul 2018 11:34:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22C4620875 for ; Mon, 23 Jul 2018 11:34:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 22C4620875 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388092AbeGWMey (ORCPT ); Mon, 23 Jul 2018 08:34:54 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:34098 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387922AbeGWMey (ORCPT ); Mon, 23 Jul 2018 08:34:54 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7DDD3738E9; Mon, 23 Jul 2018 11:34:07 +0000 (UTC) Received: from vitty.brq.redhat.com.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 680EA2026D65; Mon, 23 Jul 2018 11:34:05 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org Cc: Paolo Bonzini , Radim =?utf-8?B?S3LEjW3DocWZ?= , Roman Kagan , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , "Michael Kelley \(EOSG\)" , Mohammed Gamal , Cathy Avery , linux-kernel@vger.kernel.org, Jim Mattson , Liran Alon Subject: Re: [PATCH v2 0/6] KVM: nVMX: Enlightened VMCS for Hyper-V on KVM References: <20180621123046.29606-1-vkuznets@redhat.com> Date: Mon, 23 Jul 2018 13:34:04 +0200 In-Reply-To: <20180621123046.29606-1-vkuznets@redhat.com> (Vitaly Kuznetsov's message of "Thu, 21 Jun 2018 14:30:40 +0200") Message-ID: <87pnzerxsj.fsf@vitty.brq.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 23 Jul 2018 11:34:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 23 Jul 2018 11:34:07 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'vkuznets@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Vitaly Kuznetsov 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