From patchwork Fri Aug 27 06:48:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chenyi Qiang X-Patchwork-Id: 12461291 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 9A849C432BE for ; Fri, 27 Aug 2021 06:46:16 +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 1F54460E76 for ; Fri, 27 Aug 2021 06:46:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1F54460E76 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:48384 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mJVd1-0000xA-0T for qemu-devel@archiver.kernel.org; Fri, 27 Aug 2021 02:46:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47380) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mJVat-0007Wo-ND for qemu-devel@nongnu.org; Fri, 27 Aug 2021 02:44:03 -0400 Received: from mga12.intel.com ([192.55.52.136]:32025) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mJVao-0001h8-00 for qemu-devel@nongnu.org; Fri, 27 Aug 2021 02:44:01 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10088"; a="197471994" X-IronPort-AV: E=Sophos;i="5.84,355,1620716400"; d="scan'208";a="197471994" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Aug 2021 23:43:53 -0700 X-IronPort-AV: E=Sophos;i="5.84,355,1620716400"; d="scan'208";a="528205135" Received: from chenyi-pc.sh.intel.com ([10.239.159.88]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Aug 2021 23:43:52 -0700 From: Chenyi Qiang To: Eduardo Habkost , Paolo Bonzini , Richard Henderson Subject: [PATCH v2 1/2] target/i386: Remove split lock detect in Snowridge CPU model Date: Fri, 27 Aug 2021 14:48:17 +0800 Message-Id: <20210827064818.4698-2-chenyi.qiang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210827064818.4698-1-chenyi.qiang@intel.com> References: <20210827064818.4698-1-chenyi.qiang@intel.com> Received-SPF: pass client-ip=192.55.52.136; envelope-from=chenyi.qiang@intel.com; helo=mga12.intel.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) 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 , Chenyi Qiang , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" At present, there's no mechanism intelligent enough to virtualize split lock detection correctly. Remove it in Snowridge CPU model to avoid the feature exposure. Signed-off-by: Chenyi Qiang Message-Id: <20210630012053.10098-1-chenyi.qiang@intel.com> Signed-off-by: Eduardo Habkost --- target/i386/cpu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 34a7ce865b..aebf81d9c9 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -3682,6 +3682,14 @@ static const X86CPUDefinition builtin_x86_defs[] = { { /* end of list */ }, }, }, + { + .version = 4, + .note = "no split lock detect", + .props = (PropValue[]) { + { "split-lock-detect", "off" }, + { /* end of list */ }, + }, + }, { /* end of list */ }, }, },