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,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 72D13CA9EA0 for ; Mon, 28 Oct 2019 07:42:02 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 4494D21783 for ; Mon, 28 Oct 2019 07:42:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4494D21783 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 mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id F2CB4B1F; Mon, 28 Oct 2019 07:42:01 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 5248AB0B for ; Mon, 28 Oct 2019 07:42:00 +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 smtp1.linuxfoundation.org (Postfix) with ESMTPS id C5C9142D for ; Mon, 28 Oct 2019 07:41:59 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 5AF8668C65; Mon, 28 Oct 2019 08:41:56 +0100 (CET) Date: Mon, 28 Oct 2019 08:41:56 +0100 From: Christoph Hellwig To: isaacm@codeaurora.org Subject: Re: [PATCH] iommu/dma: Add support for DMA_ATTR_SYS_CACHE Message-ID: <20191028074156.GB20443@lst.de> References: <1572050616-6143-1-git-send-email-isaacm@codeaurora.org> <20191026053026.GA14545@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: will@kernel.org, linux-kernel@vger.kernel.org, pratikp@codeaurora.org, iommu@lists.linux-foundation.org, lmark@codeaurora.org, robin.murphy@arm.com, Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 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="utf-8" Content-Transfer-Encoding: base64 Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org T24gU2F0LCBPY3QgMjYsIDIwMTkgYXQgMDM6MTI6NTdBTSAtMDcwMCwgaXNhYWNtQGNvZGVhdXJv cmEub3JnIHdyb3RlOgo+IE9uIDIwMTktMTAtMjUgMjI6MzAsIENocmlzdG9waCBIZWxsd2lnIHdy b3RlOgo+PiBUaGUgZGVmaW5pdGlvbiBtYWtlcyB2ZXJ5IGxpdHRsZSBzZW5zZS4KPiBDYW4geW91 IHBsZWFzZSBjbGFyaWZ5IHdoYXQgcGFydCBkb2VzbuKAmXQgbWFrZSBzZW5zZSwgYW5kIHdoeT8K Ckl0IGxvb2tzIGxpa2UgY29tcGxldGUgZ2FyYmFnZSB0byBtZS4gIFRoYXQgbWlnaHQganVzdCBi ZSBiZWNhdXNlIGl0CnVzZXMgdG9ucyBvZiB0ZXJtcyBJJ3ZlIG5ldmVyIGhlYXJkIG9mIG9mIGFu ZCB3aGljaCBhcmVuJ3QgdXNlZCBhbnl3aGVyZQppbiB0aGUgRE1BIEFQSS4gIEl0IGFsc28gbWln aHQgYmUgYmVjYXVzZSBpdCBkb2Vzbid0IGV4cGxhaW4gaG93IHRoZQpmbGFnIG1pZ2h0IGFjdHVh bGx5IGJlIHByYWN0aWNhbGx5IHVzZWZ1bC4KCj4gVGhpcyBpcyAKPiByZWFsbHkganVzdCBhbiBl eHRlbnNpb24gb2YgdGhpcyBwYXRjaCB0aGF0IGdvdCBtYWlubGluZWQsIHNvIHRoYXQgY2xpZW50 cyAKPiB0aGF0IHVzZSB0aGUgRE1BIEFQSSBjYW4gdXNlIElPTU1VX1FDT01fU1lTX0NBQ0hFIGFz IHdlbGw6IAo+IGh0dHBzOi8vcGF0Y2h3b3JrLmtlcm5lbC5vcmcvcGF0Y2gvMTA5NDYwOTkvCj4+ ICBBbnkgd2l0aG91dCBhIHVzZXIgaW4gdGhlIHNhbWUgc2VyaWVzIGl0IGlzIGEgY29tcGxldGUg bm8tZ28gYW55d2F5Lgo+IElPTU1VX1FDT01fU1lTX0NBQ0hFIGRvZXMgbm90IGhhdmUgYW55IGN1 cnJlbnQgdXNlcnMgaW4gdGhlIG1haW5saW5lLCBub3IgCj4gZGlkIGl0IGhhdmUgaXQgaW4gdGhl IHBhdGNoIHNlcmllcyBpbiB3aGljaCBpdCBnb3QgbWVyZ2VkLCB5ZXQgaXQgaXMgc3RpbGwgCj4g cHJlc2VudD8gRnVydGhlcm1vcmUsIHRoZXJlIGFyZSBwbGFucyB0byB1cHN0cmVhbSBzdXBwb3J0 IGZvciBvbmUgb2Ygb3VyIAo+IFNvQ3MgdGhhdCBtYXkgYmVuZWZpdCBmcm9tIHRoaXMsIGFzIHNl ZW4gaGVyZTogCj4gaHR0cHM6Ly93d3cuc3Bpbmljcy5uZXQvbGlzdHMvaW9tbXUvbXNnMzk2MDgu aHRtbC4KCldoaWNoIG1lYW5zIGl0IHNob3VsZCBoYXZlIG5ldmVyIGJlZW4gbWVyZ2VkLiAgQXMg YSBnZW5lcmFsIHBvbGljeSB3ZSBkbwpub3QgYWRkIGNvZGUgdG8gdGhlIExpbnV4IGtlcm5lbCB3 aXRob3V0IGFjdHVhbCB1c2Vycy4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRp b24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2lvbW11