From patchwork Mon Jul 13 17:44:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 11660819 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 67BF013B1 for ; Mon, 13 Jul 2020 17:45:35 +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 47F97206F5 for ; Mon, 13 Jul 2020 17:45:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 47F97206F5 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]:40688 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jv2WE-0008Vu-Ed for patchwork-qemu-devel@patchwork.kernel.org; Mon, 13 Jul 2020 13:45:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jv2Vb-0007Xi-6L for qemu-devel@nongnu.org; Mon, 13 Jul 2020 13:44:55 -0400 Received: from mga12.intel.com ([192.55.52.136]:22540) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jv2VZ-0006H5-L6 for qemu-devel@nongnu.org; Mon, 13 Jul 2020 13:44:54 -0400 IronPort-SDR: VdpbSh94qc86LbhMnGPOwSi8LVbLxH+WtF9BXXuM6RAagJwC+Zz6+fiZuzhViVjOc9JkDuDcdc ihCqTboeAwBQ== X-IronPort-AV: E=McAfee;i="6000,8403,9681"; a="128255221" X-IronPort-AV: E=Sophos;i="5.75,348,1589266800"; d="scan'208";a="128255221" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2020 10:44:42 -0700 IronPort-SDR: Mid/vTm4r0/SC53IQ1ely7ARftn2DMgoMt9gdDmXy0Up1EKiHsMBweBNsb8aKim1iC9jIVH352 IBkCPiOhz90A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,348,1589266800"; d="scan'208";a="317450488" Received: from lxy-dell.sh.intel.com ([10.239.159.21]) by fmsmga002.fm.intel.com with ESMTP; 13 Jul 2020 10:44:40 -0700 From: Xiaoyao Li To: Eduardo Habkost , Paolo Bonzini , Richard Henderson Subject: [PATCH 1/2] i368/cpu: Clear env->user_features after loading versioned CPU model Date: Tue, 14 Jul 2020 01:44:35 +0800 Message-Id: <20200713174436.41070-2-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20200713174436.41070-1-xiaoyao.li@intel.com> References: <20200713174436.41070-1-xiaoyao.li@intel.com> Received-SPF: pass client-ip=192.55.52.136; envelope-from=xiaoyao.li@intel.com; helo=mga12.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/13 13:44:48 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_PASS=-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, Chenyi Qiang Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Features defined in versioned CPU model are recorded in env->user_features since they are updated as property. It's unwated because they are not user specified. Simply clear env->user_features as a fix. It won't clear user specified features because user specified features are filled to env->user_features later in x86_cpu_expand_features(). Cc: Chenyi Qiang Suggested-by: Eduardo Habkost Signed-off-by: Xiaoyao Li Reviewed-by: Eduardo Habkost --- target/i386/cpu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 1e5123251d74..9812d5747f35 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5159,6 +5159,12 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model) object_property_set_str(OBJECT(cpu), "vendor", vendor, &error_abort); x86_cpu_apply_version_props(cpu, model); + + /* Properties in versioned CPU model are not user specified features. + * We can simply clear env->user_features here since it will be filled later + * in x86_cpu_expand_features() based on plus_features and minus_features. + */ + memset(&env->user_features, 0, sizeof(env->user_features)); } #ifndef CONFIG_USER_ONLY