Received: by 10.213.65.68 with SMTP id h4csp824013imn; Wed, 28 Mar 2018 13:31:57 -0700 (PDT) X-Google-Smtp-Source: AIpwx48VSRBIagBemdsCfOgz8JLIGYulrUD5lL1YnEctXC91Tqvyc8wepiPJbp6YAbhse8kKx5Oz X-Received: by 2002:a17:902:36a:: with SMTP id 97-v6mr5159161pld.186.1522269117845; Wed, 28 Mar 2018 13:31:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1522269117; cv=none; d=google.com; s=arc-20160816; b=Qjy2y52Q07ame1poeT7dfejJ+giKPUqsVIGEHUUgK+QksEE3c0GYBEjMEcd2AODQGg ypTBoWufCM4Z+wHN6tljZUgeG7GPNdqkhbR54I1rxKcgm01S/Q6WzztNGV7qq6NOcace fnEhpVcpstMwG223VSILYtFU5biQaKGOzrSWd72iveedahtTA2Tct9YiXKImwhElZAo1 xkVhfWKAyROIWYs9wHd7WAD1aS/ZMUO6GIWe8hkuSY304QFh/PzrB5w+N3mCHDGBoM6H dRKUXsZ7S6LJ0MIM62rmonyKberM9MN02+dbb86g1OgE10NSK56sIJtCv6BIZRvQbn9I AvLA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :arc-authentication-results; bh=nEKB0aPPZW85aXK+o82R7cflawOGFdMR9jO/a3/4KAw=; b=HJSYu+moBnFIx2a424uRwhU0SqLgCAepkFOUB8Rt8HIQ2TwXRN+0EiFlLrbM7WAbPE deiPNb+Ymn+inDXV7XbTqs8XZ5AfccDhYgGsw47sYJvGZjN+7Ctkz5W+kOsaoLhU79ST +i8U9dmlcDZNDMh43Oh5k0AgYZ1qLDiOrdW8d/DhZA2F1GVvAyi92D9A9tgm6YKs7vMz Dijk3TIBJIppcFJQFPPIypQZyOaD3YnmnfartZ2vf9a6UKZpfRHLu+w4D1xcXbgEEzRd DCOLGNxlSMyHjqRROCgeB/TO24TzwNvRTf5Pt6lpJxBPqn+bgZFlqwYQyYebbJIhJmRC PHBQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w66si3278060pfb.198.2018.03.28.13.31.43; Wed, 28 Mar 2018 13:31:57 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753362AbeC1UXq (ORCPT + 99 others); Wed, 28 Mar 2018 16:23:46 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:51552 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753256AbeC1UXp (ORCPT ); Wed, 28 Mar 2018 16:23:45 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 843DB722DD; Wed, 28 Mar 2018 20:23:44 +0000 (UTC) Received: from flask (unknown [10.43.2.80]) by smtp.corp.redhat.com (Postfix) with SMTP id 4A90210B2B26; Wed, 28 Mar 2018 20:23:39 +0000 (UTC) Received: by flask (sSMTP sendmail emulation); Wed, 28 Mar 2018 22:23:38 +0200 Date: Wed, 28 Mar 2018 22:23:38 +0200 From: Radim =?utf-8?B?S3LEjW3DocWZ?= To: Vitaly Kuznetsov Cc: Paolo Bonzini , x86@kernel.org, kvm@vger.kernel.org, "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , "Michael Kelley (EOSG)" , Mohammed Gamal , Cathy Avery , Bandan Das , linux-kernel@vger.kernel.org, Thomas Gleixner , Christoph Hellwig Subject: Re: [PATCH v6 0/7] Enlightened VMCS support for KVM on Hyper-V Message-ID: <20180328202338.GH26753@flask> References: <20180320140211.7600-1-vkuznets@redhat.com> <87muyv2ek9.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87muyv2ek9.fsf@vitty.brq.redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Wed, 28 Mar 2018 20:23:44 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Wed, 28 Mar 2018 20:23:44 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'rkrcmar@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2018-03-26 14:42+0200, Vitaly Kuznetsov: > Vitaly Kuznetsov 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)? Not from me; I've queued it, thanks.