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 X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 37DA3C0650F for ; Thu, 8 Aug 2019 05:49:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 F3C1021873 for ; Thu, 8 Aug 2019 05:49:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FtlaeOv7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3C1021873 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9epFKIneaT8C5ohgXuOYwPypCzCbs0Nr477RvdDGGbM=; b=FtlaeOv7KdSoTI 7Ve3/GGjxBFMiSKWkLumnJ6L1XCHA3LlUWOy1EDPGRaDMBSGzRRY+4FYofWc2Y88vthegCEDZPRZE ukBmpSt8DH+EflN0kCyU3FwayEeXAFDJATFFCTS5a397RBDeECt7BfgfMYiLP0vM2/q243pEbwW0c MHkPo/WxNC/UV2MQZsJ3z5fCGWEID+RdMxuUwoLUMK3UfV+UdQh8rZ1Sniq79QW4KHzUdnpZI+7fj 4dE97zqMIDYg2mTUDQF9BdF9zfWPm7/pdpZKkRZqOzbGFV5SGXzT11wM5MdGjkAx4laCXdkhuobfP nZiA8lUkVHV/wHyP6xDg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvbIq-00017N-LF; Thu, 08 Aug 2019 05:49:32 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvbIc-0000xW-4e; Thu, 08 Aug 2019 05:49:20 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 79E6A28; Wed, 7 Aug 2019 22:49:17 -0700 (PDT) Received: from [10.163.1.243] (unknown [10.163.1.243]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1DCCD3F706; Wed, 7 Aug 2019 22:51:22 -0700 (PDT) Subject: Re: [PATCH v2] arm64: mm: print hexadecimal EC value in mem_abort_decode() To: Miles Chen , Catalin Marinas , Will Deacon References: <20190807003336.28040-1-miles.chen@mediatek.com> From: Anshuman Khandual Message-ID: <98bdbcfb-24ed-fcd8-4b2c-f2c78b245dda@arm.com> Date: Thu, 8 Aug 2019 11:19:07 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20190807003336.28040-1-miles.chen@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190807_224918_332466_78FA9792 X-CRM114-Status: GOOD ( 13.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, James Morse , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 08/07/2019 06:03 AM, Miles Chen wrote: > This change prints the hexadecimal EC value in mem_abort_decode(), > which makes it easier to lookup the corresponding EC in > the ARM Architecture Reference Manual. > > The commit 1f9b8936f36f ("arm64: Decode information from ESR upon mem > faults") prints useful information when memory abort occurs. It would > be easier to lookup "0x25" instead of "DABT" in the document. Then we > can check the corresponding ISS. > > For example: > Current info Document > EC Exception class > "CP15 MCR/MRC" 0x3 "MCR or MRC access to CP15a..." > "ASIMD" 0x7 "Access to SIMD or floating-point..." > "DABT (current EL)" 0x25 "Data Abort taken without..." > ... > > Before: > Unable to handle kernel paging request at virtual address 000000000000c000 > Mem abort info: > ESR = 0x96000046 > Exception class = DABT (current EL), IL = 32 bits > SET = 0, FnV = 0 > EA = 0, S1PTW = 0 > Data abort info: > ISV = 0, ISS = 0x00000046 > CM = 0, WnR = 1 > > After: > Unable to handle kernel paging request at virtual address 000000000000c000 > Mem abort info: > ESR = 0x96000046 > EC = 0x25: DABT (current EL), IL = 32 bits > SET = 0, FnV = 0 > EA = 0, S1PTW = 0 > Data abort info: > ISV = 0, ISS = 0x00000046 > CM = 0, WnR = 1 > > Change since v1: > print "EC" instead of "Exception class" > print EC in fixwidth > > Cc: Mark Rutland > Cc: Anshuman Khandual > Cc: James Morse > Signed-off-by: Miles Chen This version implements the suggestion, hence it should have also contained acked-by tag from Mark from earlier version. Reviewed-by: Anshuman Khandual _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel