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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 70B17FA372A for ; Wed, 16 Oct 2019 16:36:42 +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 3C7332168B for ; Wed, 16 Oct 2019 16:36:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C7332168B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com 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 2F0F0E2B; Wed, 16 Oct 2019 16:36:15 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 63518E26 for ; Wed, 16 Oct 2019 16:36:14 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 02F758B1 for ; Wed, 16 Oct 2019 16:36:14 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A93C628; Wed, 16 Oct 2019 09:36:13 -0700 (PDT) Received: from [10.1.196.50] (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 80C143F68E; Wed, 16 Oct 2019 09:36:12 -0700 (PDT) Subject: Re: "Convert the AMD iommu driver to the dma-iommu api" is buggy To: Robin Murphy , Joerg Roedel , Qian Cai References: <1571237707.5937.58.camel@lca.pw> <1571237982.5937.60.camel@lca.pw> <20191016153112.GF4695@suse.de> <1571241213.5937.64.camel@lca.pw> <20191016160314.GH4695@suse.de> From: Julien Grall Message-ID: Date: Wed, 16 Oct 2019 17:36:11 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: Marc Zyngier , iommu@lists.linux-foundation.org, Christoph Hellwig , Tom Murphy , linux-kernel@vger.kernel.org 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org SGkgUm9iaW4sCgpPbiAxNi8xMC8yMDE5IDE3OjA5LCBSb2JpbiBNdXJwaHkgd3JvdGU6Cj4gT24g MTYvMTAvMjAxOSAxNzowMywgSm9lcmcgUm9lZGVsIHdyb3RlOgo+PiBPbiBXZWQsIE9jdCAxNiwg MjAxOSBhdCAxMTo1MzozM0FNIC0wNDAwLCBRaWFuIENhaSB3cm90ZToKPj4+IE9uIFdlZCwgMjAx OS0xMC0xNiBhdCAxNzozMSArMDIwMCwgSm9lcmcgUm9lZGVsIHdyb3RlOgo+Pgo+Pj4gVGhlIHg4 NiBvbmUgbWlnaHQganVzdCBiZSBhIG1pc3Rha2UuCj4+Pgo+Pj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvaW9tbXUvYW1kX2lvbW11LmMgYi9kcml2ZXJzL2lvbW11L2FtZF9pb21tdS5jCj4+PiBpbmRl eCBhZDA1NDg0ZDBjODAuLjYzYzRiODk0NzUxZCAxMDA2NDQKPj4+IC0tLSBhL2RyaXZlcnMvaW9t bXUvYW1kX2lvbW11LmMKPj4+ICsrKyBiL2RyaXZlcnMvaW9tbXUvYW1kX2lvbW11LmMKPj4+IEBA IC0yNTQyLDcgKzI1NDIsNyBAQCBzdGF0aWMgaW50IGFtZF9pb21tdV9tYXAoc3RydWN0IGlvbW11 X2RvbWFpbiAqZG9tLAo+Pj4gdW5zaWduZWQgbG9uZyBpb3ZhLAo+Pj4gwqDCoMKgwqDCoMKgwqDC oMKgaWYgKGlvbW11X3Byb3QgJiBJT01NVV9XUklURSkKPj4+IMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqBwcm90IHw9IElPTU1VX1BST1RfSVc7Cj4+PiAtwqDCoMKgwqDCoMKgwqBy ZXQgPSBpb21tdV9tYXBfcGFnZShkb21haW4sIGlvdmEsIHBhZGRyLCBwYWdlX3NpemUsIHByb3Qs IEdGUF9LRVJORUwpOwo+Pj4gK8KgwqDCoMKgwqDCoMKgcmV0ID0gaW9tbXVfbWFwX3BhZ2UoZG9t YWluLCBpb3ZhLCBwYWRkciwgcGFnZV9zaXplLCBwcm90LCBnZnApOwo+Pgo+PiBZZWFoLCB0aGF0 IGlzIGEgYnVnLCBJIHNwb3R0ZWQgdGhhdCB0b28uCj4+Cj4+PiBAQCAtMTE4NSw3ICsxMTg1LDcg QEAgc3RhdGljIHN0cnVjdCBpb21tdV9kbWFfbXNpX3BhZ2UKPj4+ICppb21tdV9kbWFfZ2V0X21z aV9wYWdlKHN0cnVjdCBkZXZpY2UgKmRldiwKPj4+IMKgwqDCoMKgwqDCoMKgwqDCoGlmICghaW92 YSkKPj4+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqBnb3RvIG91dF9mcmVlX3Bh Z2U7Cj4+PiAtwqDCoMKgwqDCoMKgwqBpZiAoaW9tbXVfbWFwKGRvbWFpbiwgaW92YSwgbXNpX2Fk ZHIsIHNpemUsIHByb3QpKQo+Pj4gK8KgwqDCoMKgwqDCoMKgaWYgKGlvbW11X21hcF9hdG9taWMo ZG9tYWluLCBpb3ZhLCBtc2lfYWRkciwgc2l6ZSwgcHJvdCkpCj4+PiDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgZ290byBvdXRfZnJlZV9pb3ZhOwo+Pgo+PiBOb3Qgc28gc3VyZSB0 aGlzIGlzIGEgYnVnLCB0aGlzIGNvZGUgaXMgb25seSBhYm91dCBzZXR0aW5nIHVwIE1TSXMgb24K Pj4gQVJNLiBJdCBwcm9iYWJseSBkb2Vzbid0IG5lZWQgdG8gYmUgYXRvbWljLgo+IFJpZ2h0LCBz aW5jZSB0aGUgaW9tbXVfZG1hX3ByZXBhcmVfbXNpKCkgb3BlcmF0aW9uIHdhcyBicm9rZW4gb3V0 IHRvIGhhcHBlbiBhdCAKPiBNU0kgZG9tYWluIHNldHVwIHRpbWUsIEkgZG9uJ3QgdGhpbmsgdGhl IGNvbW1lbnQgaW4gdGhlcmUgYXBwbGllcyBhbnkgbW9yZSwgc28gCj4gd2UgY2FuIHByb2JhYmx5 IHN0b3AgZGlzYWJsaW5nIGlycXMgYXJvdW5kIHRoZSBpb21tdV9kbWFfZ2V0X21zaV9wYWdlKCkg Y2FsbC4KClllcywgSSBhZ3JlZSB0aGF0IGl0IGRvZXMgbm90IG5lZWQgdG8gYmUgYXRvbWljIGFu eW1vcmUuCgpDaGVlcnMsCgotLSAKSnVsaWVuIEdyYWxsCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5s aW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFp bG1hbi9saXN0aW5mby9pb21tdQ==