From patchwork Thu Jul 16 08:20:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 11666853 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 477B060D for ; Thu, 16 Jul 2020 08:21:42 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 27B77206C1 for ; Thu, 16 Jul 2020 08:21:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 27B77206C1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:43426 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jvz9A-0004UY-Cx for patchwork-qemu-devel@patchwork.kernel.org; Thu, 16 Jul 2020 04:21:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51700) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jvz85-0002p3-L0 for qemu-devel@nongnu.org; Thu, 16 Jul 2020 04:20:33 -0400 Received: from mga06.intel.com ([134.134.136.31]:38840) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jvz83-0000Hh-Nx for qemu-devel@nongnu.org; Thu, 16 Jul 2020 04:20:33 -0400 IronPort-SDR: 1ObO1bXvFmHof383yI7zaM/A7YuqvqP1dPszPftm7YYAArmU0ARQF50zfICIQ4KK6pkjX0S/pP 9afJFoa+gY0w== X-IronPort-AV: E=McAfee;i="6000,8403,9683"; a="210871089" X-IronPort-AV: E=Sophos;i="5.75,358,1589266800"; d="scan'208";a="210871089" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2020 01:20:27 -0700 IronPort-SDR: 1N7LCXM+bfDWOvADM/qwYmGdTkP85zTcUZLCxuo/Ro/+ZplEJPB06VIN/s3O8sYhk1aXnvefUU bwKiIM+/ubVQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,358,1589266800"; d="scan'208";a="286403894" Received: from lxy-dell.sh.intel.com ([10.239.159.21]) by orsmga006.jf.intel.com with ESMTP; 16 Jul 2020 01:20:23 -0700 From: Xiaoyao Li To: Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH 1/2] i386/cpu: Clear FEAT_XSAVE_COMP_{LO, HI} when XSAVE is not available Date: Thu, 16 Jul 2020 16:20:18 +0800 Message-Id: <20200716082019.215316-2-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20200716082019.215316-1-xiaoyao.li@intel.com> References: <20200716082019.215316-1-xiaoyao.li@intel.com> Received-SPF: pass client-ip=134.134.136.31; envelope-from=xiaoyao.li@intel.com; helo=mga06.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/16 04:20:23 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaoyao Li , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Per Intel SDM vol 1, 13.2, if CPUID.1:ECX.XSAVE[bit 26] is 0, the processor provides no further enumeration through CPUID function 0DH. Signed-off-by: Xiaoyao Li --- target/i386/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 1e5123251d74..f5f11603e805 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6261,6 +6261,8 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu) uint64_t mask; if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { + env->features[FEAT_XSAVE_COMP_LO] = 0; + env->features[FEAT_XSAVE_COMP_HI] = 0; return; }