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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 07F66C4332B for ; Mon, 23 Mar 2020 09:22:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD3DC2074D for ; Mon, 23 Mar 2020 09:22:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727747AbgCWJWk (ORCPT ); Mon, 23 Mar 2020 05:22:40 -0400 Received: from mga06.intel.com ([134.134.136.31]:24184 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727669AbgCWJWj (ORCPT ); Mon, 23 Mar 2020 05:22:39 -0400 IronPort-SDR: k80O12gl9ZmleMzebJ7i65jnN96s7xZtTZ6/oBwxLOOsqPTDJF21i67WIrCbJzEDGXLse9DqjI Br8ZJIXwcoAA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Mar 2020 02:22:37 -0700 IronPort-SDR: RhJ5hieVCYUCJbFJYb6x+p0rqKHXTvL9ZT8VPk037JG8vrByh6vuzmSJlQU9YtVSol7DT0me2B mTsK+GRcwg/g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,295,1580803200"; d="scan'208";a="445744294" Received: from jieliu-mobl1.ccr.corp.intel.com (HELO dell-xps.ccr.corp.intel.com) ([10.255.31.30]) by fmsmga005.fm.intel.com with ESMTP; 23 Mar 2020 02:22:36 -0700 From: Zhenyu Wang To: pbonzini@redhat.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] KVM: x86: Expose fast short REP MOV for supported cpuid Date: Mon, 23 Mar 2020 17:22:36 +0800 Message-Id: <20200323092236.3703-1-zhenyuw@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For CPU supporting fast short REP MOV (XF86_FEATURE_FSRM) e.g Icelake, Tigerlake, expose it in KVM supported cpuid as well. Signed-off-by: Zhenyu Wang --- arch/x86/kvm/cpuid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 435a7da07d5f..cf6da12bd17a 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -338,7 +338,7 @@ void kvm_set_cpu_caps(void) kvm_cpu_cap_mask(CPUID_7_EDX, F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) | - F(MD_CLEAR) | F(AVX512_VP2INTERSECT) + F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM) ); /* TSC_ADJUST and ARCH_CAPABILITIES are emulated in software. */ -- 2.25.1