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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id B2E0CC54E4A for ; Fri, 8 Mar 2024 13:00:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1riZpL-0002t5-Jj; Fri, 08 Mar 2024 07:59:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1riZpJ-0002sw-Rj for qemu-devel@nongnu.org; Fri, 08 Mar 2024 07:59:53 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1riZpH-0003MM-Rr for qemu-devel@nongnu.org; Fri, 08 Mar 2024 07:59:53 -0500 Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4TrmTp4HS7z6JB4K; Fri, 8 Mar 2024 20:59:42 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 6C900141105; Fri, 8 Mar 2024 20:59:48 +0800 (CST) Received: from localhost (10.202.227.76) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Fri, 8 Mar 2024 12:59:34 +0000 Date: Fri, 8 Mar 2024 12:59:33 +0000 To: Yuquan Wang CC: , , Subject: Re: Enabling internal errors for VH CXL devices: [was: Re: Questions about CXL RAS injection test in qemu] Message-ID: <20240308125933.000053f8@Huawei.com> In-Reply-To: <20240308020134.3146734-1-wangyuquan1236@phytium.com.cn> References: <20240308020134.3146734-1-wangyuquan1236@phytium.com.cn> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.202.227.76] X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, 8 Mar 2024 10:01:34 +0800 Yuquan Wang wrote: > On 2024-03-07 20:10, jonathan.cameron wrote: > > > Hack is fine the relevant device with lspci -tv and then use > > setpci -s 0d:00.0 0x208.l=0 > > to clear all the mask bits for uncorrectable errors. > > Thanks! The suggestions from you and Terry did work! > > BTW, is my understanding below about CXL RAS correct? > > >> 2) The error injected by "pcie_aer_inject_error" is "protocol & link errors" of cxl.io? > >> The error injected by "cxl-inject-uncorrectable-errors" or "cxl-inject-correctable-error" is "protocol & link errors" of cxl.cachemem > > Many thanks > Yuuqan > Yes. Note the two CXL errors are actually communicated via AER uncorrectable / correctable internal error combined with data that is available on the EP in the CXL specific registers. Jonathan