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 94ACFFA3728 for ; Wed, 16 Oct 2019 16:09:26 +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 7506521D7D for ; Wed, 16 Oct 2019 16:09:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7506521D7D 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 32D4BDB4; Wed, 16 Oct 2019 16:09:26 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id E4BECDA6 for ; Wed, 16 Oct 2019 16:09:24 +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 72A4E89D for ; Wed, 16 Oct 2019 16:09:24 +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 72997142F; Wed, 16 Oct 2019 09:09:23 -0700 (PDT) Received: from [10.1.197.57] (e110467-lin.cambridge.arm.com [10.1.197.57]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id F22C43F68E; Wed, 16 Oct 2019 09:09:21 -0700 (PDT) Subject: Re: "Convert the AMD iommu driver to the dma-iommu api" is buggy To: 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: Robin Murphy Message-ID: Date: Wed, 16 Oct 2019 17:09:20 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20191016160314.GH4695@suse.de> Content-Language: en-GB Cc: Marc Zyngier , Julien Grall , Tom Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, 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-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 T24gMTYvMTAvMjAxOSAxNzowMywgSm9lcmcgUm9lZGVsIHdyb3RlOgo+IE9uIFdlZCwgT2N0IDE2 LCAyMDE5IGF0IDExOjUzOjMzQU0gLTA0MDAsIFFpYW4gQ2FpIHdyb3RlOgo+PiBPbiBXZWQsIDIw MTktMTAtMTYgYXQgMTc6MzEgKzAyMDAsIEpvZXJnIFJvZWRlbCB3cm90ZToKPiAKPj4gVGhlIHg4 NiBvbmUgbWlnaHQganVzdCBiZSBhIG1pc3Rha2UuCj4+Cj4+IGRpZmYgLS1naXQgYS9kcml2ZXJz L2lvbW11L2FtZF9pb21tdS5jIGIvZHJpdmVycy9pb21tdS9hbWRfaW9tbXUuYwo+PiBpbmRleCBh ZDA1NDg0ZDBjODAuLjYzYzRiODk0NzUxZCAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy9pb21tdS9h bWRfaW9tbXUuYwo+PiArKysgYi9kcml2ZXJzL2lvbW11L2FtZF9pb21tdS5jCj4+IEBAIC0yNTQy LDcgKzI1NDIsNyBAQCBzdGF0aWMgaW50IGFtZF9pb21tdV9tYXAoc3RydWN0IGlvbW11X2RvbWFp biAqZG9tLAo+PiB1bnNpZ25lZCBsb25nIGlvdmEsCj4+ICDCoMKgwqDCoMKgwqDCoMKgaWYgKGlv bW11X3Byb3QgJiBJT01NVV9XUklURSkKPj4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgcHJvdCB8PSBJT01NVV9QUk9UX0lXOwo+PiAgIAo+PiAtwqDCoMKgwqDCoMKgwqByZXQgPSBp b21tdV9tYXBfcGFnZShkb21haW4sIGlvdmEsIHBhZGRyLCBwYWdlX3NpemUsIHByb3QsIEdGUF9L RVJORUwpOwo+PiArwqDCoMKgwqDCoMKgwqByZXQgPSBpb21tdV9tYXBfcGFnZShkb21haW4sIGlv dmEsIHBhZGRyLCBwYWdlX3NpemUsIHByb3QsIGdmcCk7Cj4gCj4gWWVhaCwgdGhhdCBpcyBhIGJ1 ZywgSSBzcG90dGVkIHRoYXQgdG9vLgo+IAo+PiBAQCAtMTE4NSw3ICsxMTg1LDcgQEAgc3RhdGlj IHN0cnVjdCBpb21tdV9kbWFfbXNpX3BhZ2UKPj4gKmlvbW11X2RtYV9nZXRfbXNpX3BhZ2Uoc3Ry dWN0IGRldmljZSAqZGV2LAo+PiAgwqDCoMKgwqDCoMKgwqDCoGlmICghaW92YSkKPj4gIMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgZ290byBvdXRfZnJlZV9wYWdlOwo+PiAgIAo+PiAt wqDCoMKgwqDCoMKgwqBpZiAoaW9tbXVfbWFwKGRvbWFpbiwgaW92YSwgbXNpX2FkZHIsIHNpemUs IHByb3QpKQo+PiArwqDCoMKgwqDCoMKgwqBpZiAoaW9tbXVfbWFwX2F0b21pYyhkb21haW4sIGlv dmEsIG1zaV9hZGRyLCBzaXplLCBwcm90KSkKPj4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgZ290byBvdXRfZnJlZV9pb3ZhOwo+IAo+IE5vdCBzbyBzdXJlIHRoaXMgaXMgYSBidWcs IHRoaXMgY29kZSBpcyBvbmx5IGFib3V0IHNldHRpbmcgdXAgTVNJcyBvbgo+IEFSTS4gSXQgcHJv YmFibHkgZG9lc24ndCBuZWVkIHRvIGJlIGF0b21pYy4KUmlnaHQsIHNpbmNlIHRoZSBpb21tdV9k bWFfcHJlcGFyZV9tc2koKSBvcGVyYXRpb24gd2FzIGJyb2tlbiBvdXQgdG8gCmhhcHBlbiBhdCBN U0kgZG9tYWluIHNldHVwIHRpbWUsIEkgZG9uJ3QgdGhpbmsgdGhlIGNvbW1lbnQgaW4gdGhlcmUg CmFwcGxpZXMgYW55IG1vcmUsIHNvIHdlIGNhbiBwcm9iYWJseSBzdG9wIGRpc2FibGluZyBpcnFz IGFyb3VuZCB0aGUgCmlvbW11X2RtYV9nZXRfbXNpX3BhZ2UoKSBjYWxsLgoKUm9iaW4uCl9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcg bGlzdAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4 Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==