From patchwork Mon Jul 13 17:44:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 11660821 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 352F413B1 for ; Mon, 13 Jul 2020 17:46:46 +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 1530A20771 for ; Mon, 13 Jul 2020 17:46:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1530A20771 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]:43780 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jv2XN-0001NE-DG for patchwork-qemu-devel@patchwork.kernel.org; Mon, 13 Jul 2020 13:46:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55382) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jv2Vc-0007Yd-16 for qemu-devel@nongnu.org; Mon, 13 Jul 2020 13:44:56 -0400 Received: from mga12.intel.com ([192.55.52.136]:22549) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jv2Va-0006HW-G2 for qemu-devel@nongnu.org; Mon, 13 Jul 2020 13:44:55 -0400 IronPort-SDR: B52PYn5EC7VDRNVCIuFryVUb73+yUtJD+9yy+/ifZaXmuiuCvDjvYvSLQce6gW1AYULXck3i6G EDsYWKWfHrSg== X-IronPort-AV: E=McAfee;i="6000,8403,9681"; a="128255226" X-IronPort-AV: E=Sophos;i="5.75,348,1589266800"; d="scan'208";a="128255226" 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 10:44:43 -0700 IronPort-SDR: 5kHW9S5hH1wdF2yLeOyytcYmx2bx3pRHOKhWwrHdcOVVjskJ6TjnlclejT1chDlNMIrCbUJR26 OpCcyCCpOXgQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,348,1589266800"; d="scan'208";a="317450493" Received: from lxy-dell.sh.intel.com ([10.239.159.21]) by fmsmga002.fm.intel.com with ESMTP; 13 Jul 2020 10:44:42 -0700 From: Xiaoyao Li To: Eduardo Habkost , Paolo Bonzini , Richard Henderson Subject: [PATCH 2/2] i386/cpu: Don't add unavailable_features to env->user_features Date: Tue, 14 Jul 2020 01:44:36 +0800 Message-Id: <20200713174436.41070-3-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 Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Features unavailable due to absent of their dependent features should not be added to env->user_features. env->user_features only contains the feature explicity specified with -feature/+feature by user. Fixes: 99e24dbdaa68 ("target/i386: introduce generic feature dependency mechanism") Signed-off-by: Xiaoyao Li Reviewed-by: Eduardo Habkost --- target/i386/cpu.c | 1 - 1 file changed, 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 9812d5747f35..fb1de1bd6165 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6370,7 +6370,6 @@ static void x86_cpu_expand_features(X86CPU *cpu, Error **errp) unavailable_features & env->user_features[d->to.index], "This feature depends on other features that were not requested"); - env->user_features[d->to.index] |= unavailable_features; env->features[d->to.index] &= ~unavailable_features; } }