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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 A59DCC4332E for ; Mon, 15 Mar 2021 08:34:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7927C64E86 for ; Mon, 15 Mar 2021 08:34:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229602AbhCOIeH (ORCPT ); Mon, 15 Mar 2021 04:34:07 -0400 Received: from verein.lst.de ([213.95.11.211]:52825 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229648AbhCOIdv (ORCPT ); Mon, 15 Mar 2021 04:33:51 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id D619068C4E; Mon, 15 Mar 2021 09:33:47 +0100 (CET) Date: Mon, 15 Mar 2021 09:33:47 +0100 From: Christoph Hellwig To: Robin Murphy Cc: Christoph Hellwig , Joerg Roedel , Will Deacon , Li Yang , freedreno@lists.freedesktop.org, kvm@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 14/17] iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE Message-ID: <20210315083347.GA28445@lst.de> References: <20210301084257.945454-1-hch@lst.de> <20210301084257.945454-15-hch@lst.de> <1658805c-ed28-b650-7385-a56fab3383e3@arm.com> <20210310091501.GC5928@lst.de> <20210310092533.GA6819@lst.de> <20210311082609.GA6990@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Fri, Mar 12, 2021 at 04:18:24PM +0000, Robin Murphy wrote: >> Let me know what you think of the version here: >> >> http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/iommu-cleanup >> >> I'll happily switch the patch to you as the author if you're fine with >> that as well. > > I still have reservations about removing the attribute API entirely and > pretending that io_pgtable_cfg is anything other than a SoC-specific > private interface, I think a private inteface would make more sense. For now I've just condensed it down to a generic set of quirk bits and dropped the attrs structure, which seems like an ok middle ground for now. That being said I wonder why that quirk isn't simply set in the device tree? > but the reworked patch on its own looks reasonable to > me, thanks! (I wasn't too convinced about the iommu_cmd_line wrappers > either...) Just iommu_get_dma_strict() needs an export since the SMMU > drivers can be modular - I consciously didn't add that myself since I was > mistakenly thinking only iommu-dma would call it. Fixed. Can I get your signoff for the patch? Then I'll switch it to over to being attributed to you.