From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: Bug 205201 - overflow of DMA mask and bus mask Date: Wed, 13 Nov 2019 12:02:07 +0100 Message-ID: <20191113110207.GA7280@lst.de> References: <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de> <20191105162856.GA15402@lst.de> <2f3c81bd-d498-066a-12c0-0a7715cda18f@xenosoft.de> <0c5a8009-d28b-601f-3d1a-9de0e869911c@xenosoft.de> <20191112144109.GA11805@lst.de> <9b14ca1b-2d5d-52b5-c7b4-0e637dbb1157@xenosoft.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <9b14ca1b-2d5d-52b5-c7b4-0e637dbb1157@xenosoft.de> Sender: linux-kernel-owner@vger.kernel.org To: Christian Zigotzky Cc: Christoph Hellwig , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Benjamin Herrenschmidt , paulus@samba.org, darren@stevens-zone.net, "contact@a-eon.com" , rtd2@xtra.co.nz, mad skateman , Rob Herring , linuxppc-dev , nsaenzjulienne@suse.de List-Id: linux-arch.vger.kernel.org Interesting. Give me some time to come up with a real fix, as drivers really should not mess with GFP flags for these allocations, and even if they did swiotlb is supposed to take care of any resulting problems. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from verein.lst.de ([213.95.11.211]:33598 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726165AbfKMLCM (ORCPT ); Wed, 13 Nov 2019 06:02:12 -0500 Date: Wed, 13 Nov 2019 12:02:07 +0100 From: Christoph Hellwig Subject: Re: Bug 205201 - overflow of DMA mask and bus mask Message-ID: <20191113110207.GA7280@lst.de> References: <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de> <20191105162856.GA15402@lst.de> <2f3c81bd-d498-066a-12c0-0a7715cda18f@xenosoft.de> <0c5a8009-d28b-601f-3d1a-9de0e869911c@xenosoft.de> <20191112144109.GA11805@lst.de> <9b14ca1b-2d5d-52b5-c7b4-0e637dbb1157@xenosoft.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9b14ca1b-2d5d-52b5-c7b4-0e637dbb1157@xenosoft.de> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Christian Zigotzky Cc: Christoph Hellwig , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Benjamin Herrenschmidt , paulus@samba.org, darren@stevens-zone.net, "contact@a-eon.com" , rtd2@xtra.co.nz, mad skateman , Rob Herring , linuxppc-dev , nsaenzjulienne@suse.de Message-ID: <20191113110207.q0Ujr6q3FHLlNtfqfcu1MIEoVUMXqfRUIM1aaq6fLoY@z> Interesting. Give me some time to come up with a real fix, as drivers really should not mess with GFP flags for these allocations, and even if they did swiotlb is supposed to take care of any resulting problems.