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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id EA252C433FE for ; Mon, 3 Oct 2022 07:22:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dAbVKw2bL+Ww+oBCl8hLI/kHi9lcreH7LI28oed3rMs=; b=VCjl2odrxH0GPP sRLKrTwNuP42d/2RIhgA4GU0VJX6cYMT0AvXsJWWwI4jJB+Aj0dkbRSCOjMlr+iHJDlpSzXcpfJY/ wNH5FKP5thm/63jy/eDx37VvRyqAbyMLZjl/+fLVi1BtawH1uZx6BllYJT0RQhhwRPoFaqNLjbC6H v6xZmMF9bQSHdL23Sn5XSRsHm6d/8tE6DhhTWlsZLkFqKTHSKuHfX0GJ3oOIui8k7o2fPLfG04oWK IQHtFRaDes77feYbfSczNkCInnZ6ZsKZbf2zyo+GVtSim7uET6cEte/gKt0BvbgQbJ0qVv4EBDdH9 WM9UCVFkXN7aynjFlO2w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ofFlS-004N5D-JN; Mon, 03 Oct 2022 07:21:22 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ofFlQ-004N3b-Em for linux-arm-kernel@lists.infradead.org; Mon, 03 Oct 2022 07:21:21 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 71C1568BEB; Mon, 3 Oct 2022 09:21:16 +0200 (CEST) Date: Mon, 3 Oct 2022 09:21:16 +0200 From: Christoph Hellwig To: Marek =?iso-8859-1?Q?Beh=FAn?= Cc: Robin Murphy , Christoph Hellwig , Arnd Bergmann , Andre Przywara , Marc Zyngier , Linus Torvalds , Russell King , Andrew Lunn , Gregory Clement , Greg Kroah-Hartman , iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org Subject: Re: REGRESSION in 6.0-rc7 caused by patch "ARM/dma-mapping: use dma-direct unconditionally" Message-ID: <20221003072116.GA2108@lst.de> References: <20220930151028.0e518421@dellmb> <630be11f-09ef-02d4-69f7-c7880ae5674c@arm.com> <20220930165234.729ad68c@dellmb> <20220930170205.490f1a6b@dellmb> <50ec473b-9def-dc2b-7d1b-cbdc277cbac2@arm.com> <20220930200200.7e689abf@thinkpad> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220930200200.7e689abf@thinkpad> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221003_002120_667602_692086F7 X-CRM114-Status: GOOD ( 13.44 ) 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="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Sep 30, 2022 at 08:02:00PM +0200, Marek Beh=FAn wrote: > Are the patches that cause the regression supposed to do only code > refactoring (although major), or are they supposed to be functional > changes? This isn't just refactoring, it is switching to an entirely different code base that does the same thing, in the boundaries of valid API behavior. So yes, it might as well cause problems with totally broken usage of the API on some drivers that were never used on anything but arm32 and do very strange things. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel