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Thu, 29 Jul 2021 12:42:12 +0000 Received: from mga18.intel.com ([134.134.136.126]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m95MX-0048Tr-2i for linux-arm-kernel@lists.infradead.org; Thu, 29 Jul 2021 12:42:10 +0000 X-IronPort-AV: E=McAfee;i="6200,9189,10059"; a="200087063" X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="200087063" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2021 05:42:06 -0700 X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="518185758" Received: from blu2-mobl3.ccr.corp.intel.com (HELO [10.254.209.5]) ([10.254.209.5]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2021 05:42:04 -0700 Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, suravee.suthikulpanit@amd.com, john.garry@huawei.com, dianders@chromium.org Subject: Re: [PATCH v2 18/24] iommu: Express DMA strictness via the domain type To: Robin Murphy , joro@8bytes.org, will@kernel.org References: <50bee17e9248ccfccb33a10238210d4ff4f4cf4d.1627468309.git.robin.murphy@arm.com> From: Lu Baolu Message-ID: Date: Thu, 29 Jul 2021 20:42:01 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_054209_201480_31612F34 X-CRM114-Status: GOOD ( 23.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjAyMS83LzI5IDE3OjM2LCBSb2JpbiBNdXJwaHkgd3JvdGU6Cj4gT24gMjAyMS0wNy0yOSAw ODoxMywgTHUgQmFvbHUgd3JvdGU6Cj4+IEhpIFJvYmluLAo+Pgo+PiBPbiA3LzI4LzIxIDExOjU4 IFBNLCBSb2JpbiBNdXJwaHkgd3JvdGU6Cj4+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9pb21tdS9p b21tdS5jIGIvZHJpdmVycy9pb21tdS9pb21tdS5jCj4+PiBpbmRleCA5ODI1NDUyMzRjZjMuLmVl Y2I1NjU3ZGU2OSAxMDA2NDQKPj4+IC0tLSBhL2RyaXZlcnMvaW9tbXUvaW9tbXUuYwo+Pj4gKysr IGIvZHJpdmVycy9pb21tdS9pb21tdS5jCj4+PiBAQCAtMTM2LDYgKzEzNiw5IEBAIHN0YXRpYyBp bnQgX19pbml0IGlvbW11X3N1YnN5c19pbml0KHZvaWQpCj4+PiDCoMKgwqDCoMKgwqDCoMKgwqAg fQo+Pj4gwqDCoMKgwqDCoCB9Cj4+PiArwqDCoMKgIGlmICghaW9tbXVfZGVmYXVsdF9wYXNzdGhy b3VnaCgpICYmICFpb21tdV9kbWFfc3RyaWN0KQo+Pj4gK8KgwqDCoMKgwqDCoMKgIGlvbW11X2Rl Zl9kb21haW5fdHlwZSA9IElPTU1VX0RPTUFJTl9ETUFfRlE7Cj4+Cj4+IGlvbW11X2RtYV9zdHJp Y3QgY291bGQgYmUgY2hhbmdlZCBsYXRlciBieSB0aGUgdmVuZG9yIGlvbW11IGRyaXZlciB2aWEK Pj4gaW9tbXVfc2V0X2RtYV9zdHJpY3QoKS4gVGhpcyBzZWVtcyBub3QgdG8gYmUgdGhlIHJpZ2h0 IHBsYWNlIHRvIHNldAo+PiBpb21tdV9kZWZfZG9tYWluX3R5cGUuCj4gCj4gQWggeWVzLCBnb29k IGNhdGNoIG9uY2UgYWdhaW4sIHRoYW5rcyEKPiAKPiBJIHRoaW5rIHRoaXMgKmlzKiB0aGUgcmln aHQgcGxhY2UgdG8gaW5pdGlhbGx5IHNldCBpdCB0byBob25vdXIgdGhlIAo+IGNvbW1hbmQtbGlu ZSBvcHRpb24sIHNpbmNlIHRoYXQgbWF0Y2hlcyB3aGF0IHdlIGRvIGZvciBwYXNzdGhyb3VnaC4g Cj4gSG93ZXZlciBhbHNvIGxpa2UgcGFzc3Rocm91Z2ggd2UnbGwgbmVlZCB0byBrZWVwIHRoaW5n cyBpbiBzeW5jIGlmIGl0J3MgCj4gdXBkYXRlZCBsYXRlciwgbGlrZSB0aGlzOgo+IAo+IAo+IGRp ZmYgLS1naXQgYS9kcml2ZXJzL2lvbW11L2lvbW11LmMgYi9kcml2ZXJzL2lvbW11L2lvbW11LmMK PiBpbmRleCA4N2Q3YjI5OTQzNmUuLjU5M2Q0NTU1YmM1NyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJz L2lvbW11L2lvbW11LmMKPiArKysgYi9kcml2ZXJzL2lvbW11L2lvbW11LmMKPiBAQCAtMzU5LDYg KzM1OSw4IEBAIGVhcmx5X3BhcmFtKCJpb21tdS5zdHJpY3QiLCBpb21tdV9kbWFfc2V0dXApOwo+ ICDCoHZvaWQgaW9tbXVfc2V0X2RtYV9zdHJpY3Qodm9pZCkKPiAgwqB7Cj4gIMKgwqDCoMKgwqDC oMKgIGlvbW11X2RtYV9zdHJpY3QgPSB0cnVlOwo+ICvCoMKgwqDCoMKgwqAgaWYgKGlvbW11X2Rl Zl9kb21haW5fdHlwZSA9PSBJT01NVV9ET01BSU5fRE1BX0ZRKQo+ICvCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgIGlvbW11X2RlZl9kb21haW5fdHlwZSA9IElPTU1VX0RPTUFJTl9ETUE7Cj4g IMKgfQo+IAo+ICDCoHN0YXRpYyBzc2l6ZV90IGlvbW11X2dyb3VwX2F0dHJfc2hvdyhzdHJ1Y3Qg a29iamVjdCAqa29iaiwKPiAKPiAKPiBEb2VzIHRoYXQgc2VlbSByZWFzb25hYmxlPyBJJ20gbm90 IHN1cmUgdGhlcmUncyBhbnkgY2xlYW5lciB3YXkgdG8gZG8gaXQgCj4gc2luY2Ugd2UgZG9uJ3Qg d2FudCB0byBpbmFkdmVydGVudGx5IGNsb2JiZXIgdGhlIGRlZmF1bHQgdHlwZSBpZiB0aGUgCj4g dXNlciBoYXMgZ2l2ZW4gdXMgc29tZXRoaW5nIGZ1bmt5IGxpa2UgImludGVsX2lvbW11PXN0cmlj dCAKPiBpb21tdS5wYXNzdGhyb3VnaD0xIi4KClllYWghIEl0J3MgcmVhc29uYWJsZSBhcyBmYXIg YXMgSSBjYW4gc2VlLgoKQmVzdCByZWdhcmRzLApiYW9sdQoKPiAKPiBDaGVlcnMsCj4gUm9iaW4u Cj4gCj4+Cj4+PiArCj4+PiDCoMKgwqDCoMKgIHByX2luZm8oIkRlZmF1bHQgZG9tYWluIHR5cGU6 ICVzICVzXG4iLAo+Pj4gwqDCoMKgwqDCoMKgwqDCoMKgIGlvbW11X2RvbWFpbl90eXBlX3N0cihp b21tdV9kZWZfZG9tYWluX3R5cGUpLAo+Pj4gwqDCoMKgwqDCoMKgwqDCoMKgIChpb21tdV9jbWRf bGluZSAmIElPTU1VX0NNRF9MSU5FX0RNQV9BUEkpID8KPj4KPj4gQmVzdCByZWdhcmRzLAo+PiBi YW9sdQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlu dXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt YXJtLWtlcm5lbAo=