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=-19.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1, USER_IN_DEF_DKIM_WL autolearn=unavailable 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 5194CC433ED for ; Fri, 16 Apr 2021 17:32:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 247E46124B for ; Fri, 16 Apr 2021 17:32:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242690AbhDPRc0 (ORCPT ); Fri, 16 Apr 2021 13:32:26 -0400 Received: from linux.microsoft.com ([13.77.154.182]:56862 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236140AbhDPRcV (ORCPT ); Fri, 16 Apr 2021 13:32:21 -0400 Received: from [192.168.254.32] (unknown [47.187.223.33]) by linux.microsoft.com (Postfix) with ESMTPSA id F3E3520B8001; Fri, 16 Apr 2021 10:31:55 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com F3E3520B8001 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1618594316; bh=kwpaa1a5+AiPOWCdlPBsZNZGBHCN4N/Uje1fuen89+o=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=IBhckXmyPeQdehVc+Ge6lf78wD873wDdIzVc2IdOdNWzKssbmVeRJE5rBCppUoJks 5IMOTb/2ABmx+DYxhV2TWhBw8x6H6Uy43d/Nqx138jIklqS/zk4J40JUs3T4j8OdCq ypx98NhSpkPLFwtXSEMzeAhG/gky4xpQM45JEDXc= Subject: Re: [RFC PATCH v2 1/1] arm64: Implement stack trace termination record To: Mark Brown Cc: mark.rutland@arm.com, jpoimboe@redhat.com, jthierry@redhat.com, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org References: <659f3d5cc025896ba4c49aea431aa8b1abc2b741> <20210402032404.47239-1-madvenka@linux.microsoft.com> <20210402032404.47239-2-madvenka@linux.microsoft.com> <20210416161740.GH5560@sirena.org.uk> From: "Madhavan T. Venkataraman" Message-ID: <765d0a08-d65f-162b-b20d-07a51b05d984@linux.microsoft.com> Date: Fri, 16 Apr 2021 12:31:55 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210416161740.GH5560@sirena.org.uk> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks! Madhavan On 4/16/21 11:17 AM, Mark Brown wrote: > On Thu, Apr 01, 2021 at 10:24:04PM -0500, madvenka@linux.microsoft.com wrote: > >> Reliable stacktracing requires that we identify when a stacktrace is >> terminated early. We can do this by ensuring all tasks have a final >> frame record at a known location on their task stack, and checking >> that this is the final frame record in the chain. > > Reviewed-by: Mark Brown > 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=-10.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,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 8578DC433B4 for ; Fri, 16 Apr 2021 17:34:14 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 37030613B4 for ; Fri, 16 Apr 2021 17:34:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37030613B4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=V67zcR8+4v5ZUjukQSw7MuelWePa2Tu8rRAugHZ+1Qw=; b=AaAvuiiBJQm10VZMMZEAxpI8/ WJSDDylVrcR0q2qeRxq9MGxrhouWARL7TdiKGZw68z71FBrXzIJH0VfqE5tHHwHDA80Ba3snAdw3J FFljAzNTjzYVPRGt09WRG7CLJY1+IYUM5D/soiCidrHf3sYNNF6tj/i6ffoKYeTe/FdmatfndAa9Y Qv1xGkYRCGvbaAnFdJouABBNxVHYFCk+/MCSQJSSH5Kvx6d+Ut7vwKlINWQukX0muU5QNRhBIlCXF 1AYX2qPuraeIhwteAwvMITjQgWBqBEuSADhghiC2jD2xg92Q+96cV2LaJnBT28paDXOlL/LYz06Gu V5CQ+BNaA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXSK4-002xHt-QX; Fri, 16 Apr 2021 17:32:05 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lXSK0-002xHl-T4 for linux-arm-kernel@desiato.infradead.org; Fri, 16 Apr 2021 17:32:01 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To: Subject:Sender:Reply-To:Content-ID:Content-Description; bh=kwpaa1a5+AiPOWCdlPBsZNZGBHCN4N/Uje1fuen89+o=; b=AeHGUc0uWzzuFcOnkQkPGRpR6B EPJJ1ux86ruBUy80epoTMGV6Ha3HtXPBAlHy96OU95rF1FCZrTreEJ4Bm6s99g28Wr9l3Vh5wAHrE XTDCzmopjRLDUzb1nagSqyQ0b6GWBwoW6RMyLZpoxDw/wcAharj6mnEdQCo4ihs6n+15VHZcBfkhD pAHi74Nt43l4sOCZXt7Dsd/ikJtRBALZocKvQbZDFJpgkltmcJqasXMJhWbLToxR6Zb+zDr80mD94 IPalW7QATNor42OPcjC5Ss6xcJu0YrJKqr/7c85l/KhJUxiX1j5Unr7ncDusrFHtDFW9bgwB65Qwo KTDc623w==; Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXSJy-009b6S-Dh for linux-arm-kernel@lists.infradead.org; Fri, 16 Apr 2021 17:31:59 +0000 Received: from [192.168.254.32] (unknown [47.187.223.33]) by linux.microsoft.com (Postfix) with ESMTPSA id F3E3520B8001; Fri, 16 Apr 2021 10:31:55 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com F3E3520B8001 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1618594316; bh=kwpaa1a5+AiPOWCdlPBsZNZGBHCN4N/Uje1fuen89+o=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=IBhckXmyPeQdehVc+Ge6lf78wD873wDdIzVc2IdOdNWzKssbmVeRJE5rBCppUoJks 5IMOTb/2ABmx+DYxhV2TWhBw8x6H6Uy43d/Nqx138jIklqS/zk4J40JUs3T4j8OdCq ypx98NhSpkPLFwtXSEMzeAhG/gky4xpQM45JEDXc= Subject: Re: [RFC PATCH v2 1/1] arm64: Implement stack trace termination record To: Mark Brown Cc: mark.rutland@arm.com, jpoimboe@redhat.com, jthierry@redhat.com, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org References: <659f3d5cc025896ba4c49aea431aa8b1abc2b741> <20210402032404.47239-1-madvenka@linux.microsoft.com> <20210402032404.47239-2-madvenka@linux.microsoft.com> <20210416161740.GH5560@sirena.org.uk> From: "Madhavan T. Venkataraman" Message-ID: <765d0a08-d65f-162b-b20d-07a51b05d984@linux.microsoft.com> Date: Fri, 16 Apr 2021 12:31:55 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210416161740.GH5560@sirena.org.uk> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210416_103158_512836_A020CFB3 X-CRM114-Status: UNSURE ( 9.14 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Thanks! Madhavan On 4/16/21 11:17 AM, Mark Brown wrote: > On Thu, Apr 01, 2021 at 10:24:04PM -0500, madvenka@linux.microsoft.com wrote: > >> Reliable stacktracing requires that we identify when a stacktrace is >> terminated early. We can do this by ensuring all tasks have a final >> frame record at a known location on their task stack, and checking >> that this is the final frame record in the chain. > > Reviewed-by: Mark Brown > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel