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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 4E091C2D0A8 for ; Wed, 23 Sep 2020 13:48:08 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 75A0E21BE5 for ; Wed, 23 Sep 2020 13:48:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 75A0E21BE5 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 fraxinus.osuosl.org (Postfix) with ESMTP id E4FBE8607D; Wed, 23 Sep 2020 13:48:06 +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 rw7zwEd-uP9k; Wed, 23 Sep 2020 13:48:05 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id CAA38854F8; Wed, 23 Sep 2020 13:48:04 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id ABA7CC0889; Wed, 23 Sep 2020 13:48:04 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id A14ADC0051 for ; Wed, 23 Sep 2020 13:48:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 895A48701E for ; Wed, 23 Sep 2020 13:48:02 +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 ISQQzB6zX74I for ; Wed, 23 Sep 2020 13:48:01 +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 hemlock.osuosl.org (Postfix) with ESMTPS id 4A8E687019 for ; Wed, 23 Sep 2020 13:48:01 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 388D26736F; Wed, 23 Sep 2020 15:47:56 +0200 (CEST) Date: Wed, 23 Sep 2020 15:47:56 +0200 From: Christoph Hellwig To: Ajay kumar Subject: Re: IOVA allocation dependency between firmware buffer and remaining buffers Message-ID: <20200923134756.GA10902@lst.de> References: <59cda41f-170c-a1ad-a345-bc38b9ed4d73@arm.com> <11584d09-5995-6133-3bd3-8f7a0afd0e01@samsung.com> <20200923065808.GA16366@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: jean-philippe@linaro.org, will@kernel.org, linux-mm@kvack.org, Linux IOMMU , Thierry Reding , Shaik Ameer Basha , 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 Wed, Sep 23, 2020 at 01:15:33PM +0530, Ajay kumar wrote: > Hello all, > > We pretty much tried to solve the same issue here with a new API in DMA-IOMMU: > https://lore.kernel.org/linux-iommu/20200811054912.GA301@infradead.org/T/ > > Christopher- the user part would be MFC devices on exynos platforms I still think we: a) need to wire it up through the DMA API with an ops vector, and an error for devices not using dma-iommu b) submit it together with an actual users (like the series from Marek) _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu