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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 B1031C33C9C for ; Thu, 21 Nov 2019 09:19:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9331A208D4 for ; Thu, 21 Nov 2019 09:19:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726358AbfKUJTE (ORCPT ); Thu, 21 Nov 2019 04:19:04 -0500 Received: from mx2.suse.de ([195.135.220.15]:49138 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726014AbfKUJTE (ORCPT ); Thu, 21 Nov 2019 04:19:04 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 134B7B324; Thu, 21 Nov 2019 09:19:01 +0000 (UTC) Message-ID: Subject: Re: [PATCH] dma-mapping: treat dev->bus_dma_mask as a DMA limit From: Nicolas Saenz Julienne To: Christoph Hellwig , Robin Murphy Cc: Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-mips@vger.kernel.org, linux-ide@vger.kernel.org, Paul Mackerras , "H. Peter Anvin" , Frank Rowand , Marek Szyprowski , Lorenzo Pieralisi , Paul Burton , Michael Ellerman , Joerg Roedel , x86@kernel.org, phil@raspberrypi.org, linux-acpi@vger.kernel.org, Ingo Molnar , linux-pci@vger.kernel.org, James Hogan , Len Brown , devicetree@vger.kernel.org, Rob Herring , Borislav Petkov , Andy Lutomirski , Bjorn Helgaas , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Jens Axboe , "Rafael J. Wysocki" , Hanjun Guo , linux-kernel@vger.kernel.org, Ralf Baechle , iommu@lists.linux-foundation.org, Sudeep Holla , linuxppc-dev@lists.ozlabs.org Date: Thu, 21 Nov 2019 10:18:54 +0100 In-Reply-To: <20191121073152.GB24024@lst.de> References: <20191113161340.27228-1-nsaenzjulienne@suse.de> <20191119170006.GA19569@lst.de> <7609007d-52f5-bb10-e8d5-96fadbfab46d@arm.com> <20191121073152.GB24024@lst.de> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-lq+O6sjXzX+AgzEMEd7n" User-Agent: Evolution 3.34.1 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org --=-lq+O6sjXzX+AgzEMEd7n Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2019-11-21 at 08:31 +0100, Christoph Hellwig wrote: > On Tue, Nov 19, 2019 at 05:17:03PM +0000, Robin Murphy wrote: > > TBH I can't see it being a massive problem even if the DMA patch, drive= r=20 > > and DTS patch went entirely separately via the respective DMA, PCI, and= =20 > > arm-soc trees in the same cycle. Bisecting over a merge window is a big= =20 > > enough pain in the bum as it is, and if the worst case is that someone= =20 > > trying to do that on a Pi4 has a wonky PCI controller appear for a coup= le=20 > > of commits, they may as well just disable that driver for their bisecti= on,=20 > > because it wasn't there at the start so can't possibly be the thing the= y're=20 > > looking for regressions in ;) >=20 > Agreed. >=20 > Nicolas, can you send a respin? That way I can still queue it up > for 5.5. Oh, I thought it was too late for that already. I'll send it in a minute. Regards, Nicolas --=-lq+O6sjXzX+AgzEMEd7n Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEErOkkGDHCg2EbPcGjlfZmHno8x/4FAl3WVn4ACgkQlfZmHno8 x/6kBwf/SKtubLT3BK6PDi2kFxS7U1Nuy9X/MqsOPMdQNIIzccK4WqpweJsn3fn7 WUh4Tsn5H2fjaeqsOCLpG5PeYLO6nDWDmCzVszhsyBjqWczikEWQ8reuCbXbbW6G rUh1wlp8+VDFDs0reFtW9POlYcvxixcMmbkSjKPEtZCh/GjdgIcjdkCtvwGkdrE1 8E8Z6K9lqyiB2WQ0z7tdOf3fglQwJ7HxRgsmlYm1u0UQCm3+Hdrvy2hO7X/OYhtB 4JbPmzPk62RNUjdmnuJ8t2ar57gMQ4VwRi7hjfCir9Iq8t/B7vCzCAQnzREpL05w BEUfJlvCYEvS3eArOErmv3Mm+/ugdg== =NUIQ -----END PGP SIGNATURE----- --=-lq+O6sjXzX+AgzEMEd7n--