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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 BA75EC63777 for ; Mon, 23 Nov 2020 10:08:38 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 EF8F92072C for ; Mon, 23 Nov 2020 10:08:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="cUJ1n0nj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF8F92072C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.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 whitealder.osuosl.org (Postfix) with ESMTP id 67A6F84BE9; Mon, 23 Nov 2020 10:08:37 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cj11t3PJbFKM; Mon, 23 Nov 2020 10:08:35 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 489E2866FE; Mon, 23 Nov 2020 10:08:35 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2EDF1C163C; Mon, 23 Nov 2020 10:08:35 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 7415CC0052 for ; Mon, 23 Nov 2020 10:08:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 5AC05870C8 for ; Mon, 23 Nov 2020 10:08:33 +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 HyT7FQFuwRqB for ; Mon, 23 Nov 2020 10:08:32 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by hemlock.osuosl.org (Postfix) with ESMTPS id 5029D870C4 for ; Mon, 23 Nov 2020 10:08:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=GMC0zoD4ESumTpUR0l7CFso7jCjRLzfG8oaHAbiw8Nw=; b=cUJ1n0nj5UYC6H8uzqFXNKi1sj VJVEgsND3cpDxCRsPqQ5bBuGflv1l5bMovoQ2AU/2kJHb6TKWvpEMLuEyC72YYc6TtxcIyT8suqEf 4hLFc9qxeFlZVYf+TGJ2rJ9KKmUQSFyzC2oLgvfvqy4pdlLpIShVXCfo/bZhxzBvX+J6Vv7WNg2my F6gpVj9v06mb46gfYvD82o+K6mq48jXWrAL8bPpTT2ZiWpmJXMPBN3BvCwfLogoc/HIq/OcwMqifE slkh8yn9PgWFg8wu/TPKBu70jzqfjf/qE/Uu+l2tnemGHNvM0Xl1AMIi9vZ6ICa1J2Z73y6VowtlK Z/IeNhqg==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kh8lc-0006wE-Sr; Mon, 23 Nov 2020 10:08:16 +0000 Date: Mon, 23 Nov 2020 10:08:16 +0000 From: Christoph Hellwig To: Lu Baolu Subject: Re: [PATCH v5 3/7] iommu: Allow the dma-iommu api to use bounce buffers Message-ID: <20201123100816.GA26619@infradead.org> References: <20201120101719.3172693-1-baolu.lu@linux.intel.com> <20201120101719.3172693-4-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201120101719.3172693-4-baolu.lu@linux.intel.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Cc: Logan Gunthorpe , Tvrtko Ursulin , Ashok Raj , Will Deacon , linux-kernel@vger.kernel.org, Tom Murphy , Christoph Hellwig , iommu@lists.linux-foundation.org, David Woodhouse 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" > + /* > + * If both the physical buffer start address and size are > + * page aligned, we don't need to use a bounce page. > + */ > + if (IS_ENABLED(CONFIG_SWIOTLB) && dev_is_untrusted(dev) && > + iova_offset(iovad, phys | org_size)) { > + aligned_size = iova_align(iovad, org_size); > + phys = swiotlb_tbl_map_single(dev, > + phys_to_dma(dev, io_tlb_start), > + phys, org_size, aligned_size, dir, attrs); swiotlb_tbl_map_single takes one less argument in 5.10-rc now. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu