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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,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 1478CC433E1 for ; Fri, 17 Jul 2020 09:47:22 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 CDF652070E for ; Fri, 17 Jul 2020 09:47:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDF652070E 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 localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 9AB8888299; Fri, 17 Jul 2020 09:47:21 +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 xReQaZCWoiqL; Fri, 17 Jul 2020 09:47:19 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 125BC88294; Fri, 17 Jul 2020 09:47:19 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E8ED3C07FF; Fri, 17 Jul 2020 09:47:18 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id CD072C0733 for ; Fri, 17 Jul 2020 09:47:17 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id B4C7B88299 for ; Fri, 17 Jul 2020 09:47:17 +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 Ha9VnJYJ6Nud for ; Fri, 17 Jul 2020 09:47:17 +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 hemlock.osuosl.org (Postfix) with ESMTP id 0226288294 for ; Fri, 17 Jul 2020 09:47:16 +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 4CBE830E; Fri, 17 Jul 2020 02:47:16 -0700 (PDT) Received: from [10.57.35.46] (unknown [10.57.35.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 45DDD3F66E; Fri, 17 Jul 2020 02:47:15 -0700 (PDT) Subject: Re: [PATCH v2 0/3] iommu/amd: I/O VA address limits To: Sebastian Ott , Joerg Roedel References: <20200630093039.GC28824@8bytes.org> <20200630224634.319-1-sebott@amazon.de> <20200710123059.GF27672@8bytes.org> <751e403f-7095-f761-465b-9e187b423b0b@amazon.de> From: Robin Murphy Message-ID: <271d67b2-482e-7a16-8fd7-1f1a6a4bdff2@arm.com> Date: Fri, 17 Jul 2020 10:47:13 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <751e403f-7095-f761-465b-9e187b423b0b@amazon.de> Content-Language: en-GB Cc: Benjamin Serebrin , Filippo Sironi , iommu@lists.linux-foundation.org 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gMjAyMC0wNy0xNyAxMDoyMCwgU2ViYXN0aWFuIE90dCB2aWEgaW9tbXUgd3JvdGU6Cj4gSGVs bG8gSm9lcmcsCj4gCj4gT24gMjAyMC0wNy0xMCAxNDozMSwgSm9lcmcgUm9lZGVsIHdyb3RlOgo+ PiBPbiBXZWQsIEp1bCAwMSwgMjAyMCBhdCAxMjo0NjozMUFNICswMjAwLCBTZWJhc3RpYW4gT3R0 IHdyb3RlOgo+Pj4gVGhlIElWUlMgQUNQSSB0YWJsZSBzcGVjaWZpZXMgbWF4aW11bSBhZGRyZXNz IHNpemVzIGZvciBJL08gdmlydHVhbAo+Pj4gYWRkcmVzc2VzIHRoYXQgY2FuIGJlIGhhbmRsZWQg YnkgdGhlIElPTU1VcyBpbiB0aGUgc3lzdGVtLiBQYXJzZSB0aGF0Cj4+PiBkYXRhIGZyb20gdGhl IElWUlMgaGVhZGVyIHRvIHByb3ZpZGUgYXBlcnR1cmUgaW5mb3JtYXRpb24gZm9yIERNQQo+Pj4g bWFwcGluZ3MgYW5kIHVzZXJzIG9mIHRoZSBpb21tdSBBUEkuCj4+Pgo+Pj4gQ2hhbmdlcyBmb3Ig VjI6Cj4+PiDCoCAtIHVzZSBsaW1pdHMgaW4gaW9tbXVfc2V0dXBfZG1hX29wcygpCj4+PiDCoCAt IHJlYmFzZWQgdG8gY3VycmVudCB1cHN0cmVhbQo+Pj4KPj4+IFNlYmFzdGlhbiBPdHQgKDMpOgo+ Pj4gwqDCoCBpb21tdS9hbWQ6IFBhcnNlIHN1cHBvcnRlZCBhZGRyZXNzIHNpemVzIGZyb20gSVZS Uwo+Pj4gwqDCoCBpb21tdS9hbWQ6IFJlc3RyaWN0IGFwZXJ0dXJlIGZvciBkb21haW5zIHRvIGNv bmZvcm0gd2l0aCBJVlJTCj4+PiDCoMKgIGlvbW11L2FtZDogQWN0dWFsbHkgZW5mb3JjZSBnZW9t ZXRyeSBhcGVydHVyZQo+PiBUaGFua3MgZm9yIHRoZSBjaGFuZ2VzLiBNYXkgSSBhc2sgd2hhdCB0 aGUgcmVhc29uIGZvciB0aG9zZSBjaGFuZ2VzIGFyZT8KPj4gQUZBSUsgYWxsIEFNRCBJT01NVSBp bXBsZW1lbnRhdGlvbnMgKGluIGhhcmR3YXJlKSBzdXBwb3J0IGZ1bGwgNjRiaXQKPj4gYWRkcmVz cyBzcGFjZXMsIGFuZCB0aGUgSVZSUyB0YWJsZSBtaWdodCBhY3R1YWxseSBiZSB3cm9uZywgbGlt aXRpbmcgdGhlCj4+IGFkZHJlc3Mgc3BhY2UgaW4gdGhlIHdvcnN0IGNhc2UgdG8gb25seSAzMiBi aXQuCj4gCj4gSXQncyBub3QgdGhlIElPTU1VLCBidXQgd2UndmUgZW5jb3VudGVyZWQgZGV2aWNl cyB0aGF0IGFyZSBjYXBhYmxlIG9mIAo+IG1vcmUgdGhhbgo+IDMyLSBidXQgbGVzcyB0aGFuIDY0 LSBiaXQgSU9WQSwgYW5kIHRoZXJlJ3Mgbm8gd2F5IHRvIGV4cHJlc3MgdGhhdCB0byAKPiB0aGUg SU9WQQo+IGFsbG9jYXRvciBpbiB0aGUgUENJZSBzcGVjLiBPdXIgc29sdXRpb24gd2FzIHRvIGhh dmUgb3VyIHBsYXRmb3JtcyAKPiBleHByZXNzIGFuCj4gSVZSUyBlbnRyeSB0aGF0IHNheXMgdGhl IElPTU1VIGlzIGNhcGFibGUgb2YgNDgtYml0LCB3aGljaCB0aGVzZSBkZXZpY2VzIAo+IGNhbiBn ZW5lcmF0ZS4KPiA0OCBiaXRzIGlzIHBsZW50eSBvZiBhZGRyZXNzIHNwYWNlIGluIHRoaXMgZ2Vu ZXJhdGlvbiBmb3IgdGhlIAo+IGFwcGxpY2F0aW9uIHdlIGhhdmUuCgpIbW0sIGZvciBjb25zdHJh aW50cyBvZiBpbmRpdmlkdWFsIGRldmljZXMsIGl0IHNob3VsZCByZWFsbHkgYmUgdGhlaXIgCmRy aXZlcnMnIGpvYiB0byBjYWxsIGRtYV9zZXRfbWFzayooKSB3aXRoIHRoZSBhcHByb3ByaWF0ZSB2 YWx1ZSBpbiB0aGUgCmZpcnN0IHBsYWNlIHJhdGhlciB0aGFuIGp1c3QgYXNzdW1pbmcgdGhhdCA2 NCBtZWFucyBhbnl0aGluZyA+MzIuIElmIAppdCdzIGEgY2FzZSB3aGVyZSB0aGUgZGV2aWNlIGl0 c2VsZiB0ZWNobmljYWxseSBpcyA2NC1iaXQgY2FwYWJsZSwgYnV0IAphbiB1cHN0cmVhbSBicmlk Z2UgaXMgY29uc3RyYWluaW5nIGl0LCB0aGVuIHRoYXQgbGltaXQgY2FuIGFsc28gYmUgCmRlc2Ny aWJlZCBlaXRoZXIgYnkgZGVkaWNhdGVkIGZpcm13YXJlIHByb3BlcnRpZXMgKGUuZy4gQUNQSSBf RE1BKSBvciAKd2l0aCBhIHF1aXJrIGxpa2UgdmlhX25vX2RhYygpLgoKUm9iaW4uCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlz dAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91 bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==