From patchwork Thu Oct 3 15:51:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11172893 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 14CD7139A for ; Thu, 3 Oct 2019 17:12:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E5346215EA for ; Thu, 3 Oct 2019 17:12:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570122763; bh=nxhfcdcem27JgN1iEngjzJ+W+McMsJHgH8HRx+nl0Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=t4h9pLns0GC9qf2iMMuZq5XX6l9LOkVufmoIwMlWyjMJ0VpsjmwQhXwO06tAHsLqm klPR28CTblzsj3y9DLH/U2rRzl+eM90SWrulk1b58CfqC0zwimMekncxhFJmFJPLrO dLSQI5oE+N3m353kKBpkDv2ZvScPYTwk+/cpO+B4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391635AbfJCQ36 (ORCPT ); Thu, 3 Oct 2019 12:29:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:35616 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391024AbfJCQ34 (ORCPT ); Thu, 3 Oct 2019 12:29:56 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E6C082054F; Thu, 3 Oct 2019 16:29:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570120195; bh=nxhfcdcem27JgN1iEngjzJ+W+McMsJHgH8HRx+nl0Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ddTqYosvVcuiTCJHoiwZ7FpEGCp/I2AE0Q/RnCLUr+z7al2RrSOj2C1VR9jTUuniV +1CVdWmLpzpEtDrQhPyF7AwLHiNpWRDAiA1ih2cHShPinTbUL6Lf3mpGqPXbAXFaQ5 cwr7t2hOoDcRWkzrCNwoiW2cv0pRlUETk6AqQJF8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yazen Ghannam , Borislav Petkov , "linux-edac@vger.kernel.org" , James Morse , Mauro Carvalho Chehab , Tony Luck , Sasha Levin Subject: [PATCH 5.2 133/313] EDAC/amd64: Decode syndrome before translating address Date: Thu, 3 Oct 2019 17:51:51 +0200 Message-Id: <20191003154545.993390858@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154533.590915454@linuxfoundation.org> References: <20191003154533.590915454@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org From: Yazen Ghannam [ Upstream commit 8a2eaab7daf03b23ac902481218034ae2fae5e16 ] AMD Family 17h systems currently require address translation in order to report the system address of a DRAM ECC error. This is currently done before decoding the syndrome information. The syndrome information does not depend on the address translation, so the proper EDAC csrow/channel reporting can function without the address. However, the syndrome information will not be decoded if the address translation fails. Decode the syndrome information before doing the address translation. The syndrome information is architecturally defined in MCA_SYND and can be considered robust. The address translation is system-specific and may fail on newer systems without proper updates to the translation algorithm. Fixes: 713ad54675fd ("EDAC, amd64: Define and register UMC error decode function") Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov Cc: "linux-edac@vger.kernel.org" Cc: James Morse Cc: Mauro Carvalho Chehab Cc: Tony Luck Link: https://lkml.kernel.org/r/20190821235938.118710-6-Yazen.Ghannam@amd.com Signed-off-by: Sasha Levin --- drivers/edac/amd64_edac.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index ffe56a8fe39da..608fdab566b32 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2550,13 +2550,6 @@ static void decode_umc_error(int node_id, struct mce *m) err.channel = find_umc_channel(m); - if (umc_normaddr_to_sysaddr(m->addr, pvt->mc_node_id, err.channel, &sys_addr)) { - err.err_code = ERR_NORM_ADDR; - goto log_error; - } - - error_address_to_page_and_offset(sys_addr, &err); - if (!(m->status & MCI_STATUS_SYNDV)) { err.err_code = ERR_SYND; goto log_error; @@ -2573,6 +2566,13 @@ static void decode_umc_error(int node_id, struct mce *m) err.csrow = m->synd & 0x7; + if (umc_normaddr_to_sysaddr(m->addr, pvt->mc_node_id, err.channel, &sys_addr)) { + err.err_code = ERR_NORM_ADDR; + goto log_error; + } + + error_address_to_page_and_offset(sys_addr, &err); + log_error: __log_ecc_error(mci, &err, ecc_type); }