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=-2.2 required=3.0 tests=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 D1DDDC4724C for ; Fri, 8 May 2020 07:16:20 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 AFA23206B9 for ; Fri, 8 May 2020 07:16:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFA23206B9 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 hemlock.osuosl.org (Postfix) with ESMTP id 124A08710D; Fri, 8 May 2020 07:16:20 +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 86rT5M9zxK1J; Fri, 8 May 2020 07:16:18 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 878C4820BF; Fri, 8 May 2020 07:16:18 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 67606C0865; Fri, 8 May 2020 07:16:18 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id BCE91C07FF for ; Fri, 8 May 2020 07:16:16 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id B5CC02152E for ; Fri, 8 May 2020 07:16:16 +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 qjuASk6Y-Dfe for ; Fri, 8 May 2020 07:16:15 +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 silver.osuosl.org (Postfix) with ESMTPS id 2347621515 for ; Fri, 8 May 2020 07:16:14 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id AFF1B68B05; Fri, 8 May 2020 09:16:09 +0200 (CEST) Date: Fri, 8 May 2020 09:16:09 +0200 From: Christoph Hellwig To: Marek Szyprowski Subject: Re: [PATCH v3 02/25] drm: core: fix common struct sg_table related issues Message-ID: <20200508071609.GA31690@lst.de> References: <20200505083926.28503-1-m.szyprowski@samsung.com> <20200505084614.30424-1-m.szyprowski@samsung.com> <20200505084614.30424-2-m.szyprowski@samsung.com> <20200505101508.GA14860@lst.de> <5dd1cb55-accb-0dc6-4ca5-90c57cd19527@samsung.com> <20200505110950.GA19067@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Thomas Zimmermann , Bartlomiej Zolnierkiewicz , David Airlie , Maarten Lankhorst , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, iommu@lists.linux-foundation.org, Maxime Ripard , Daniel Vetter , Robin Murphy , Christoph Hellwig , linux-arm-kernel@lists.infradead.org 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="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Fri, May 08, 2020 at 09:12:13AM +0200, Marek Szyprowski wrote: > Then we would just need one more helper to construct scatterlist, as the = > above two are read-only don't allow to modify scatterlist: > = > #define for_each_sgtable_sg(sgt, sg, i)=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0 \ > =A0=A0=A0=A0=A0=A0 for_each_sg(sgt->sgl, sg, sgt->orig_nents, i) > = > With the above 3 helpers we can probably get rid of all instances of = > sg_table->{nents,orig_nents} from the DRM code. I will prepare patches so= on. Sounds great, thanks! _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu