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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 30CFCC433E0 for ; Fri, 31 Jul 2020 13:09:13 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 02119206FA for ; Fri, 31 Jul 2020 13:09:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 02119206FA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id C92E1886B1; Fri, 31 Jul 2020 13:09:12 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tKPDL-wFBhkq; Fri, 31 Jul 2020 13:09:11 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 6345E88619; Fri, 31 Jul 2020 13:09:11 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4B560C0050; Fri, 31 Jul 2020 13:09:11 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id C818DC004D for ; Fri, 31 Jul 2020 13:09:09 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id B358D854A7 for ; Fri, 31 Jul 2020 13:09:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2q9IxHF_kuab for ; Fri, 31 Jul 2020 13:09:08 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 6E0CD85485 for ; Fri, 31 Jul 2020 13:09:08 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 9EC2468BFE; Fri, 31 Jul 2020 15:09:03 +0200 (CEST) Date: Fri, 31 Jul 2020 15:09:03 +0200 From: Christoph Hellwig To: Amit Pundir Subject: Re: dma-pool fixes Message-ID: <20200731130903.GA31110@lst.de> References: <20200728104742.422960-1-hch@lst.de> <20200728120716.GA2507@lst.de> <20200728124114.GA4865@lst.de> <20200728153055.GA16701@lst.de> <18a3b93cc5ba3e0e39ae1b14759ce31121d54045.camel@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: jeremy.linton@arm.com, iommu@lists.linux-foundation.org, linux-rpi-kernel@lists.infradead.org, David Rientjes , Robin Murphy , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Fri, Jul 31, 2020 at 01:16:34PM +0530, Amit Pundir wrote: > Hi Nicolas, Christoph, > > Just out of curiosity, I'm wondering if we can restore the earlier > behaviour and make DMA atomic allocation configured thru platform > specific device tree instead? > > Or if you can allow a more hackish approach to restore the earlier > logic, using of_machine_is_compatible() just for my device for the > time being. Meanwhile I'm checking with other developers running the > mainline kernel on sdm845 phones like OnePlus 6/6T, if they see this > issue too. If we don't find a fix for your platform I'm going to send Linus a last minute revert this weekend, to stick to the no regressions policy. I still hope we can fix the issue for real. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu