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=-10.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, 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 63E57C4338F for ; Thu, 29 Jul 2021 09:37:12 +0000 (UTC) Received: from smtp2.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 12D2861059 for ; Thu, 29 Jul 2021 09:37:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 12D2861059 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; 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Thu, 29 Jul 2021 09:37:07 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id L6XoAXMeMyZr for ; Thu, 29 Jul 2021 09:37:05 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp1.osuosl.org (Postfix) with ESMTP id 66C8183886 for ; Thu, 29 Jul 2021 09:37:05 +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 7761D1FB; Thu, 29 Jul 2021 02:37:04 -0700 (PDT) Received: from [10.57.36.146] (unknown [10.57.36.146]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1B5533F73D; Thu, 29 Jul 2021 02:37:02 -0700 (PDT) Subject: Re: [PATCH v2 18/24] iommu: Express DMA strictness via the domain type To: Lu Baolu , joro@8bytes.org, will@kernel.org References: <50bee17e9248ccfccb33a10238210d4ff4f4cf4d.1627468309.git.robin.murphy@arm.com> From: Robin Murphy Message-ID: Date: Thu, 29 Jul 2021 10:36:56 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-GB Cc: linux-kernel@vger.kernel.org, dianders@chromium.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.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" T24gMjAyMS0wNy0yOSAwODoxMywgTHUgQmFvbHUgd3JvdGU6Cj4gSGkgUm9iaW4sCj4gCj4gT24g Ny8yOC8yMSAxMTo1OCBQTSwgUm9iaW4gTXVycGh5IHdyb3RlOgo+PiBkaWZmIC0tZ2l0IGEvZHJp dmVycy9pb21tdS9pb21tdS5jIGIvZHJpdmVycy9pb21tdS9pb21tdS5jCj4+IGluZGV4IDk4MjU0 NTIzNGNmMy4uZWVjYjU2NTdkZTY5IDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJzL2lvbW11L2lvbW11 LmMKPj4gKysrIGIvZHJpdmVycy9pb21tdS9pb21tdS5jCj4+IEBAIC0xMzYsNiArMTM2LDkgQEAg c3RhdGljIGludCBfX2luaXQgaW9tbXVfc3Vic3lzX2luaXQodm9pZCkKPj4gwqDCoMKgwqDCoMKg wqDCoMKgIH0KPj4gwqDCoMKgwqDCoCB9Cj4+ICvCoMKgwqAgaWYgKCFpb21tdV9kZWZhdWx0X3Bh c3N0aHJvdWdoKCkgJiYgIWlvbW11X2RtYV9zdHJpY3QpCj4+ICvCoMKgwqDCoMKgwqDCoCBpb21t dV9kZWZfZG9tYWluX3R5cGUgPSBJT01NVV9ET01BSU5fRE1BX0ZROwo+IAo+IGlvbW11X2RtYV9z dHJpY3QgY291bGQgYmUgY2hhbmdlZCBsYXRlciBieSB0aGUgdmVuZG9yIGlvbW11IGRyaXZlciB2 aWEKPiBpb21tdV9zZXRfZG1hX3N0cmljdCgpLiBUaGlzIHNlZW1zIG5vdCB0byBiZSB0aGUgcmln aHQgcGxhY2UgdG8gc2V0Cj4gaW9tbXVfZGVmX2RvbWFpbl90eXBlLgoKQWggeWVzLCBnb29kIGNh dGNoIG9uY2UgYWdhaW4sIHRoYW5rcyEKCkkgdGhpbmsgdGhpcyAqaXMqIHRoZSByaWdodCBwbGFj ZSB0byBpbml0aWFsbHkgc2V0IGl0IHRvIGhvbm91ciB0aGUgCmNvbW1hbmQtbGluZSBvcHRpb24s IHNpbmNlIHRoYXQgbWF0Y2hlcyB3aGF0IHdlIGRvIGZvciBwYXNzdGhyb3VnaC4gCkhvd2V2ZXIg YWxzbyBsaWtlIHBhc3N0aHJvdWdoIHdlJ2xsIG5lZWQgdG8ga2VlcCB0aGluZ3MgaW4gc3luYyBp ZiBpdCdzIAp1cGRhdGVkIGxhdGVyLCBsaWtlIHRoaXM6CgoKZGlmZiAtLWdpdCBhL2RyaXZlcnMv aW9tbXUvaW9tbXUuYyBiL2RyaXZlcnMvaW9tbXUvaW9tbXUuYwppbmRleCA4N2Q3YjI5OTQzNmUu LjU5M2Q0NTU1YmM1NyAxMDA2NDQKLS0tIGEvZHJpdmVycy9pb21tdS9pb21tdS5jCisrKyBiL2Ry aXZlcnMvaW9tbXUvaW9tbXUuYwpAQCAtMzU5LDYgKzM1OSw4IEBAIGVhcmx5X3BhcmFtKCJpb21t dS5zdHJpY3QiLCBpb21tdV9kbWFfc2V0dXApOwogIHZvaWQgaW9tbXVfc2V0X2RtYV9zdHJpY3Qo dm9pZCkKICB7CiAgICAgICAgIGlvbW11X2RtYV9zdHJpY3QgPSB0cnVlOworICAgICAgIGlmIChp b21tdV9kZWZfZG9tYWluX3R5cGUgPT0gSU9NTVVfRE9NQUlOX0RNQV9GUSkKKyAgICAgICAgICAg ICAgIGlvbW11X2RlZl9kb21haW5fdHlwZSA9IElPTU1VX0RPTUFJTl9ETUE7CiAgfQoKICBzdGF0 aWMgc3NpemVfdCBpb21tdV9ncm91cF9hdHRyX3Nob3coc3RydWN0IGtvYmplY3QgKmtvYmosCgoK RG9lcyB0aGF0IHNlZW0gcmVhc29uYWJsZT8gSSdtIG5vdCBzdXJlIHRoZXJlJ3MgYW55IGNsZWFu ZXIgd2F5IHRvIGRvIGl0IApzaW5jZSB3ZSBkb24ndCB3YW50IHRvIGluYWR2ZXJ0ZW50bHkgY2xv YmJlciB0aGUgZGVmYXVsdCB0eXBlIGlmIHRoZSAKdXNlciBoYXMgZ2l2ZW4gdXMgc29tZXRoaW5n IGZ1bmt5IGxpa2UgImludGVsX2lvbW11PXN0cmljdCAKaW9tbXUucGFzc3Rocm91Z2g9MSIuCgpD aGVlcnMsClJvYmluLgoKPiAKPj4gKwo+PiDCoMKgwqDCoMKgIHByX2luZm8oIkRlZmF1bHQgZG9t YWluIHR5cGU6ICVzICVzXG4iLAo+PiDCoMKgwqDCoMKgwqDCoMKgwqAgaW9tbXVfZG9tYWluX3R5 cGVfc3RyKGlvbW11X2RlZl9kb21haW5fdHlwZSksCj4+IMKgwqDCoMKgwqDCoMKgwqDCoCAoaW9t bXVfY21kX2xpbmUgJiBJT01NVV9DTURfTElORV9ETUFfQVBJKSA/Cj4gCj4gQmVzdCByZWdhcmRz LAo+IGJhb2x1Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRw czovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==