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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 1D475C4361B for ; Tue, 15 Dec 2020 01:44:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2824224D1 for ; Tue, 15 Dec 2020 01:44:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730882AbgLOBov (ORCPT ); Mon, 14 Dec 2020 20:44:51 -0500 Received: from mga14.intel.com ([192.55.52.115]:28304 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730518AbgLOBoi (ORCPT ); Mon, 14 Dec 2020 20:44:38 -0500 IronPort-SDR: YzIKhzhrT1rPkx3Pg2t9eE1240/Rl4K6ErVpxDb6XbqyLaDKqHiFaRsOrvMcnaVPxrEjvolrno 7w+8yi4G9koQ== X-IronPort-AV: E=McAfee;i="6000,8403,9835"; a="174040107" X-IronPort-AV: E=Sophos;i="5.78,420,1599548400"; d="scan'208";a="174040107" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2020 17:43:54 -0800 IronPort-SDR: r43YeJ0x+cZDU79EEEMoj44I5pRG8gy/eKeMKfrsmVRxRhHiDm+GJsNF2Jcx3/Kxq0kaqg407+ r8pNKscCUbtg== X-IronPort-AV: E=Sophos;i="5.78,420,1599548400"; d="scan'208";a="367838620" Received: from zhangj4-mobl.ccr.corp.intel.com (HELO [10.238.130.84]) ([10.238.130.84]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2020 17:43:50 -0800 Subject: Re: [PATCH 0/2] Enumerate and expose AVX512_FP16 feature To: Paolo Bonzini , sean.j.christopherson@intel.com, Kyung Min Park , x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, vkuznets@redhat.com, wanpengli@tencent.com References: <20201208033441.28207-1-kyung.min.park@intel.com> From: "Zhang, Cathy" Message-ID: <6b9fd7d6-cbba-864f-57bd-93e7297532e2@intel.com> Date: Tue, 15 Dec 2020 09:43:48 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Thanks Paolo and Sean! Sorry for the delay response, I'm back from vacation and just see Sean's comment, and I see Paolo has made changes, thanks a bunch! On 12/12/2020 7:42 AM, Paolo Bonzini wrote: > On 08/12/20 04:34, Kyung Min Park wrote: >> Introduce AVX512_FP16 feature and expose it to KVM CPUID for processors >> that support it. KVM reports this information and guests can make use >> of it. >> >> Detailed information on the instruction and CPUID feature flag can be >> found >> in the latest "extensions" manual [1]. >> >> Reference: >> [1]. >> https://software.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html >> >> Cathy Zhang (1): >>    x86: Expose AVX512_FP16 for supported CPUID >> >> Kyung Min Park (1): >>    Enumerate AVX512 FP16 CPUID feature flag >> >>   arch/x86/include/asm/cpufeatures.h | 1 + >>   arch/x86/kernel/cpu/cpuid-deps.c   | 1 + >>   arch/x86/kvm/cpuid.c               | 2 +- >>   3 files changed, 3 insertions(+), 1 deletion(-) >> > > Queued, with adjusted commit message according to Sean's review. > > Paolo >