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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 1C92AC433E0 for ; Thu, 25 Feb 2021 02:05:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C7F1964EC8 for ; Thu, 25 Feb 2021 02:05:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236725AbhBYCEa (ORCPT ); Wed, 24 Feb 2021 21:04:30 -0500 Received: from mga12.intel.com ([192.55.52.136]:11237 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236625AbhBYCEX (ORCPT ); Wed, 24 Feb 2021 21:04:23 -0500 IronPort-SDR: dcHnqP8ZhpsSHKcqG9WVXhvJZs+6wCnLp8gM/A9G5oEwXV3N92N496jng/wFidZsB4RfnA5C9g +7dufUOt9nwg== X-IronPort-AV: E=McAfee;i="6000,8403,9905"; a="164600846" X-IronPort-AV: E=Sophos;i="5.81,203,1610438400"; d="scan'208";a="164600846" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2021 18:02:31 -0800 IronPort-SDR: YOAAxv/VPQMb8k0UAuMjlTPE/mMIrCB9QshiZaeenDxclCZ5pjuacKNoquEI6xPOVIZ+CThEPL ykzEfnlEtBWA== X-IronPort-AV: E=Sophos;i="5.81,203,1610438400"; d="scan'208";a="391885944" Received: from unknown (HELO [10.238.130.200]) ([10.238.130.200]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2021 18:02:28 -0800 Subject: Re: [PATCH v1] kvm: x86: Revise guest_fpu xcomp_bv field To: Sean Christopherson Cc: Dave Hansen , pbonzini@redhat.com, Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210208161659.63020-1-jing2.liu@linux.intel.com> <4e4b37d1-e2f8-6757-003c-d19ae8184088@intel.com> <9d23ae5b-9b85-88d7-a2d7-44fd75a068b9@linux.intel.com> From: "Liu, Jing2" Message-ID: Date: Thu, 25 Feb 2021 10:02:26 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/25/2021 4:40 AM, Sean Christopherson wrote: > On Tue, Feb 23, 2021, Liu, Jing2 wrote: >> XCOMP_BV[63] field indicates that the save area is in the >> compacted format and XCOMP_BV[62:0] indicates the states that >> have space allocated in the save area, including both XCR0 >> and XSS bits enable by the host kernel. Use xfeatures_mask_all >> for calculating xcomp_bv and reuse XCOMP_BV_COMPACTED_FORMAT >> defined by kernel. > Works for me, just please wrap at ~73-75 chars, not ~64. > > Thanks! Sure, let me update v2. BRs, Jing