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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 01092C07E94 for ; Fri, 4 Jun 2021 15:12:04 +0000 (UTC) Received: from smtp4.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 96167613EA for ; Fri, 4 Jun 2021 15:12:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96167613EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 5946941598; Fri, 4 Jun 2021 15:12:03 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WF3Sng9FirJb; Fri, 4 Jun 2021 15:11:59 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTP id DAAEF41576; Fri, 4 Jun 2021 15:11:58 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B3AFAC000D; Fri, 4 Jun 2021 15:11:58 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id C08C8C0001 for ; Fri, 4 Jun 2021 15:11:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 66B7B843C8 for ; Fri, 4 Jun 2021 15:11:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KH8R0W0kwG-H for ; Fri, 4 Jun 2021 15:11:50 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from theia.8bytes.org (8bytes.org [IPv6:2a01:238:4383:600:38bc:a715:4b6d:a889]) by smtp1.osuosl.org (Postfix) with ESMTPS id 4580083A98 for ; Fri, 4 Jun 2021 15:11:50 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id 77ED03A9; Fri, 4 Jun 2021 17:11:48 +0200 (CEST) Date: Fri, 4 Jun 2021 17:11:47 +0200 From: Joerg Roedel To: Robin Murphy Subject: Re: [PATCH] iommu/rockchip: Remove redundant DMA syncs Message-ID: References: <5c29a9ff0a20df0167635b1901f94b5195c1fb28.1621604979.git.robin.murphy@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5c29a9ff0a20df0167635b1901f94b5195c1fb28.1621604979.git.robin.murphy@arm.com> Cc: benjamin.gaignard@collabora.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, will@kernel.org, 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="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Fri, May 21, 2021 at 02:49:39PM +0100, Robin Murphy wrote: > When we allocate new pagetable pages, we don't modify them between the > initial dma_map_single() call and the dma_sync_single_for_device() call > via rk_iommu_flush(), so the latter is entirely pointless. > > Signed-off-by: Robin Murphy > --- > drivers/iommu/rockchip-iommu.c | 3 --- > 1 file changed, 3 deletions(-) Applied, thanks Robin. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu