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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EBD8C433F5 for ; Wed, 5 Jan 2022 23:59:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245594AbiAEX7D (ORCPT ); Wed, 5 Jan 2022 18:59:03 -0500 Received: from linux.microsoft.com ([13.77.154.182]:35072 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239615AbiAEX7B (ORCPT ); Wed, 5 Jan 2022 18:59:01 -0500 Received: from [192.168.254.32] (unknown [47.187.212.181]) by linux.microsoft.com (Postfix) with ESMTPSA id 15A6C20B7179; Wed, 5 Jan 2022 15:59:00 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 15A6C20B7179 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1641427140; bh=isMsZ9PjYpeZF+DylXH2CoVWmE+GQLqJiZb61eOCKOE=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=ItwAkrsl4Etr04TzIlcPXDoiKY0ij+1jXREZcKRlvNXP3hgcZjpM0f3oVxlt/qc+u v1uZBCl9ySBPd/rddAtGKxFsYMhvK5e5j8ekfnjDPfSMJdJM2lbd0Xlx2sdy6dzUAk N7HeAAh56tc8u1/HX/lIzMpvB6aM5jl+ug3W5ZlE= Subject: Re: [PATCH v12 07/10] arm64: Introduce stack trace reliability checks in the unwinder To: Mark Brown Cc: mark.rutland@arm.com, jpoimboe@redhat.com, ardb@kernel.org, nobuta.keiya@fujitsu.com, sjitindarsingh@gmail.com, catalin.marinas@arm.com, will@kernel.org, jmorris@namei.org, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org References: <0d0eb36f348fb5a6af6eb592c0525f6e94007328> <20220103165212.9303-1-madvenka@linux.microsoft.com> <20220103165212.9303-8-madvenka@linux.microsoft.com> From: "Madhavan T. Venkataraman" Message-ID: <85156eb8-df63-29c0-cbfc-37bc0356d9e8@linux.microsoft.com> Date: Wed, 5 Jan 2022 17:58:59 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: live-patching@vger.kernel.org Thanks for the review. Do you have any comments on: [PATCH v12 04/10] arm64: Split unwind_init() [PATCH v12 10/10] arm64: Select HAVE_RELIABLE_STACKTRACE Madhavan On 1/5/22 10:58 AM, Mark Brown wrote: > On Mon, Jan 03, 2022 at 10:52:09AM -0600, madvenka@linux.microsoft.com wrote: >> From: "Madhavan T. Venkataraman" >> >> There are some kernel features and conditions that make a stack trace >> unreliable. Callers may require the unwinder to detect these cases. >> E.g., livepatch. > > Reviwed-by: Mark Brown > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >