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=-5.3 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 6B2E7C4727E for ; Wed, 7 Oct 2020 06:21:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2874520B1F for ; Wed, 7 Oct 2020 06:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727133AbgJGGVy (ORCPT ); Wed, 7 Oct 2020 02:21:54 -0400 Received: from verein.lst.de ([213.95.11.211]:36263 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726138AbgJGGVy (ORCPT ); Wed, 7 Oct 2020 02:21:54 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 8B42F67373; Wed, 7 Oct 2020 08:21:50 +0200 (CEST) Date: Wed, 7 Oct 2020 08:21:50 +0200 From: Christoph Hellwig To: Tomasz Figa Cc: Christoph Hellwig , Sergey Senozhatsky , Mauro Carvalho Chehab , Marek Szyprowski , "open list:IOMMU DRIVERS" , Robin Murphy , Linux Doc Mailing List , Linux Kernel Mailing List , Linux Media Mailing List Subject: Re: [PATCH 8/8] WIP: add a dma_alloc_contiguous API Message-ID: <20201007062150.GA10601@lst.de> References: <20200930160917.1234225-1-hch@lst.de> <20200930160917.1234225-9-hch@lst.de> <20201002175040.GA1131147@chromium.org> <20201005082629.GA13850@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: linux-doc@vger.kernel.org On Tue, Oct 06, 2020 at 10:56:04PM +0200, Tomasz Figa wrote: > > Yes. And make sure the API isn't implemented when VIVT caches are > > used, but that isn't really different from the current interface. > > Okay, thanks. Let's see if we can make necessary changes to the videobuf2. > > +Sergey Senozhatsky for awareness too. I can defer the changes a bit to see if you'd really much prefer the former interface. I think for now the most important thing is that it works properly for the potential users, and the prime one is videobuf2 for now. drm also seems like a big potential users, but I had a really hard time getting the developers to engage in API development. 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=-5.3 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 1227FC4727F for ; Wed, 7 Oct 2020 06:21:58 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 77EE9206F0 for ; Wed, 7 Oct 2020 06:21:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77EE9206F0 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 silver.osuosl.org (Postfix) with ESMTP id B193022D0D; Wed, 7 Oct 2020 06:21:56 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Zs2pAtWr16pl; Wed, 7 Oct 2020 06:21:55 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id C7EE822636; Wed, 7 Oct 2020 06:21:55 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 97459C016F; Wed, 7 Oct 2020 06:21:55 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id E850AC0051 for ; Wed, 7 Oct 2020 06:21:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id CCA8D861EE for ; Wed, 7 Oct 2020 06:21:54 +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 Eck7SHv7Vduf for ; Wed, 7 Oct 2020 06:21:54 +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 43F3886199 for ; Wed, 7 Oct 2020 06:21:54 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 8B42F67373; Wed, 7 Oct 2020 08:21:50 +0200 (CEST) Date: Wed, 7 Oct 2020 08:21:50 +0200 From: Christoph Hellwig To: Tomasz Figa Subject: Re: [PATCH 8/8] WIP: add a dma_alloc_contiguous API Message-ID: <20201007062150.GA10601@lst.de> References: <20200930160917.1234225-1-hch@lst.de> <20200930160917.1234225-9-hch@lst.de> <20201002175040.GA1131147@chromium.org> <20201005082629.GA13850@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Linux Media Mailing List , Linux Doc Mailing List , Linux Kernel Mailing List , Sergey Senozhatsky , "open list:IOMMU DRIVERS" , Mauro Carvalho Chehab , 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 Tue, Oct 06, 2020 at 10:56:04PM +0200, Tomasz Figa wrote: > > Yes. And make sure the API isn't implemented when VIVT caches are > > used, but that isn't really different from the current interface. > > Okay, thanks. Let's see if we can make necessary changes to the videobuf2. > > +Sergey Senozhatsky for awareness too. I can defer the changes a bit to see if you'd really much prefer the former interface. I think for now the most important thing is that it works properly for the potential users, and the prime one is videobuf2 for now. drm also seems like a big potential users, but I had a really hard time getting the developers to engage in API development. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu