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=-2.4 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_MUTT 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 3B817C46460 for ; Sat, 11 Aug 2018 20:08:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85B8D21A13 for ; Sat, 11 Aug 2018 20:08:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="rR+MaA1i" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 85B8D21A13 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727637AbeHKWnf (ORCPT ); Sat, 11 Aug 2018 18:43:35 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:33292 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727441AbeHKWne (ORCPT ); Sat, 11 Aug 2018 18:43:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2014; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=FzW32jkF85SOibAaNTTjtdN6iNBbDZNTUsbsHECpiLU=; b=rR+MaA1i9cV7OBlQnb8AstLgb Hvo0PqJw50htYid9qukleNlvSqWgOrx0Qp8i0A0K2AGvK9fkIOh76bH+fxvjrH74zw3EdgmqJ3Osp Q2nX1/WPbdx03Mlq0p/X2/booV5+2jjti56oyo9sLQA72hFIjnCay4qsoFJO4D1yUKg9w=; Received: from n2100.armlinux.org.uk ([2002:4e20:1eda:1:214:fdff:fe10:4f86]:45451) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.90_1) (envelope-from ) id 1foXCm-0005sa-9R; Sat, 11 Aug 2018 17:57:35 +0100 Received: from linux by n2100.armlinux.org.uk with local (Exim 4.90_1) (envelope-from ) id 1foXCj-0004Ab-Nf; Sat, 11 Aug 2018 17:57:29 +0100 Date: Sat, 11 Aug 2018 17:57:28 +0100 From: Russell King - ARM Linux To: Stefan Agner Cc: catalin.marinas@arm.com, arnd@arndb.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ARM: drop experimental mark for ARM stack unwinding Message-ID: <20180811165728.GS30658@n2100.armlinux.org.uk> References: <20180811103127.21485-1-stefan@agner.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180811103127.21485-1-stefan@agner.ch> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 11, 2018 at 12:31:27PM +0200, Stefan Agner wrote: > ARM stack unwinding is upstream since 2009 and has been proven > working well. At this time it is the preferred stack unwinding > support since it also supports Thumb 2. Do not scare people > and drop the EXPERIMENTAL mark. Actually, there are still cases where we're missing the annotations - I've seen them in various oops dumps, but I forget where they are. What I do remember is that they didn't seem trivial to fix at the time, so it's still recommended that frame pointers are used if you want to guarantee getting a debuggable oops dump. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 13.8Mbps down 630kbps up According to speedtest.net: 13Mbps down 490kbps up