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 BC1A9C76194 for ; Thu, 25 Jul 2019 11:43:54 +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 9D41A229F9 for ; Thu, 25 Jul 2019 11:43:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D41A229F9 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 6FDB1EF7; Thu, 25 Jul 2019 11:43:54 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id DA117EF2 for ; Thu, 25 Jul 2019 11:43:52 +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 42A96775 for ; Thu, 25 Jul 2019 11:43:52 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 137C168BFE; Thu, 25 Jul 2019 13:43:49 +0200 (CEST) Date: Thu, 25 Jul 2019 13:43:48 +0200 From: Christoph Hellwig To: Lu Baolu Subject: Re: [PATCH v5 02/10] iommu/vt-d: Use per-device dma_ops Message-ID: <20190725114348.GA30957@lst.de> References: <20190725031717.32317-1-baolu.lu@linux.intel.com> <20190725031717.32317-3-baolu.lu@linux.intel.com> <20190725054413.GC24527@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: alan.cox@intel.com, Christoph Hellwig , Stefano Stabellini , ashok.raj@intel.com, Jonathan Corbet , pengfei.xu@intel.com, Ingo Molnar , David Woodhouse , kevin.tian@intel.com, Konrad Rzeszutek Wilk , Steven Rostedt , Bjorn Helgaas , Boris Ostrovsky , mika.westerberg@linux.intel.com, Juergen Gross , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com, Robin Murphy 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 T24gVGh1LCBKdWwgMjUsIDIwMTkgYXQgMDM6MTg6MDNQTSArMDgwMCwgTHUgQmFvbHUgd3JvdGU6 Cj4+IERvbid0IHdlIG5lZWQgdG8ga2VlcCB0aGlzIGJpdCBzbyB0aGF0IHdlIHN0aWxsIGFsbG93 IHRoZSBJT01NVQo+PiB0byBhY3QgaWYgdGhlIGRldmljZSBoYXMgYSB0b28gc21hbGwgRE1BIG1h c2sgdG8gYWRkcmVzcyBhbGwgbWVtb3J5IGluCj4+IHRoZSBzeXN0ZW0sIGV2ZW4gaWYgaWYgaXQg c2hvdWxkIG90aGVyd2lzZSBiZSBpZGVudGl0eSBtYXBwZWQ/Cj4+Cj4KPiBUaGlzIGNoZWNraW5n IGhhcHBlbnMgb25seSB3aGVuIGRldmljZSBpcyB1c2luZyBhbiBpZGVudGl0eSBtYXBwZWQKPiBk b21haW4uIElmIHRoZSBkZXZpY2UgaGFzIGEgc21hbGwgRE1BIG1hc2ssIHN3aW90bGIgd2lsbCBi ZSB1c2VkIGZvcgo+IGhpZ2ggbWVtb3J5IGFjY2Vzcy4KPgo+IFRoaXMgaXMgc3VwcG9zZWQgdG8g YmUgaGFuZGxlZCBpbiBkbWFfZGlyZWN0X21hcF9wYWdlKCk6Cj4KPiAgICAgICAgIGlmICh1bmxp a2VseSghZG1hX2RpcmVjdF9wb3NzaWJsZShkZXYsIGRtYV9hZGRyLCBzaXplKSkgJiYKPiAgICAg ICAgICAgICAhc3dpb3RsYl9tYXAoZGV2LCAmcGh5cywgJmRtYV9hZGRyLCBzaXplLCBkaXIsIGF0 dHJzKSkgewo+ICAgICAgICAgICAgICAgICByZXBvcnRfYWRkcihkZXYsIGRtYV9hZGRyLCBzaXpl KTsKPiAgICAgICAgICAgICAgICAgcmV0dXJuIERNQV9NQVBQSU5HX0VSUk9SOwo+ICAgICAgICAg fQoKV2VsbCwgeWVzLiAgQnV0IHRoZSBwb2ludCBpcyB0aGF0IHRoZSBjdXJyZW50IGNvZGUgdXNl cyBkeW5hbWljIGlvbW11Cm1hcHBpbmdzIGV2ZW4gaWYgdGhlIGRldmljZXMgaXMgaW4gdGhlIGlk ZW50aXR5IG1hcHBlZCBkb21haW4gd2hlbiB0aGUKZG1hIG1hc2sg0ZZzIHRvbyBzbWFsbCB0byBt YXAgYWxsIG1lbW9yeSBkaXJlY3RseS4gIFlvdXIgY2hhbmdlIG1lYW5zIGl0CndpbGwgbm93IHVz ZSBzd2lvdGxiIHdoaWNoIGlzIG1vc3QgbGlrZWx5IGdvaW5nIHRvIGJlIGEgbG90IG1vcmUKZXhw ZW5zaXZlLiAgSSBkb24ndCB0aGluayB0aGF0IHRoaXMgY2hhbmdlIGlzIGEgZ29vZCBpZGVhLCBh bmQgZXZlbiBpZgp3ZSBkZWNpZGUgdGhhdCB0aGlzIGlzIGEgZ29vZCBpZGVhIGFmdGVyIGFsbCB0 aGF0IHNob3VsZCBiZSBkb25lIGluIGEKc2VwYXJhdGUgcHJlcCBwYXRjaCB0aGF0IGV4cGxhaW5z IHRoZSByYXRpb25hbGUuCgo+IEJlc3QgcmVnYXJkcywKPiBCYW9sdQotLS1lbmQgcXVvdGVkIHRl eHQtLS0KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9t bXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8v bGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11