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 >