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=-2.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 3A902C43613 for ; Thu, 20 Jun 2019 11:17:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1F2242080C for ; Thu, 20 Jun 2019 11:17:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726784AbfFTLRx (ORCPT ); Thu, 20 Jun 2019 07:17:53 -0400 Received: from mga03.intel.com ([134.134.136.65]:57760 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726268AbfFTLRx (ORCPT ); Thu, 20 Jun 2019 07:17:53 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Jun 2019 04:17:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,396,1557212400"; d="scan'208";a="311627870" Received: from liujing-dell.bj.intel.com ([10.238.145.70]) by orsmga004.jf.intel.com with ESMTP; 20 Jun 2019 04:17:51 -0700 From: Jing Liu To: pbonzini@redhat.com, kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, jing2.liu@intel.com, jing2.liu@linux.intel.com Subject: [PATCH RFC] kvm: x86: AVX512_BF16 feature support Date: Thu, 20 Jun 2019 19:21:51 +0800 Message-Id: <1561029712-11848-1-git-send-email-jing2.liu@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The patch focuses on a new instruction AVX512_BF16 support for kvm guest, defined as CPUID.(EAX=7,ECX=1):EAX[bit 5], see spec[1]. The kvm implementation depends on kernel patch[2] which is in lkml discussion. References: [1] https://software.intel.com/sites/default/files/managed/c5/15/\ architecture-instruction-set-extensions-programming-reference.pdf [2] https://lkml.org/lkml/2019/6/19/912 Jing Liu (1): kvm: x86: Expose AVX512_BF16 feature to guest arch/x86/kvm/cpuid.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) -- 1.8.3.1