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spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id DC639605A9; Mon, 14 Jun 2021 15:05:26 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Tj9u89c7z2n0; Mon, 14 Jun 2021 15:05:26 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id B50CA605DB; Mon, 14 Jun 2021 15:05:25 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8704FC000E; Mon, 14 Jun 2021 15:05:25 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4C11DC000B for ; Mon, 14 Jun 2021 15:05:24 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 2D4764013B for ; Mon, 14 Jun 2021 15:05:24 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id T4oQy22BcmQH for ; Mon, 14 Jun 2021 15:05:23 +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 smtp2.osuosl.org (Postfix) with ESMTP id 47C6640100 for ; Mon, 14 Jun 2021 15:05:23 +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 6547B1FB; Mon, 14 Jun 2021 08:05:22 -0700 (PDT) Received: from [10.57.9.136] (unknown [10.57.9.136]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DECD13F70D; Mon, 14 Jun 2021 08:05:20 -0700 (PDT) Subject: Re: [PATCH v12 3/5] iommu/vt-d: Add support for IOMMU default DMA mode build options To: John Garry , Lu Baolu , "joro@8bytes.org" , "will@kernel.org" , "dwmw2@infradead.org" References: <1623414043-40745-1-git-send-email-john.garry@huawei.com> <1623414043-40745-4-git-send-email-john.garry@huawei.com> <4f2cec34-bad9-e1bf-85c1-04d1a0c1aecf@linux.intel.com> <6055cd0d-a1d3-a73a-6831-3837021f3c9c@huawei.com> <0a04f964-80f4-7b2a-9740-eae4596e4e09@arm.com> <453a4606-099c-3d06-13fd-dc29c24230f5@huawei.com> From: Robin Murphy Message-ID: Date: Mon, 14 Jun 2021 16:05:15 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <453a4606-099c-3d06-13fd-dc29c24230f5@huawei.com> Content-Language: en-GB Cc: "iommu@lists.linux-foundation.org" , "linux-kernel@vger.kernel.org" , Linuxarm 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" T24gMjAyMS0wNi0xNCAxNToxOSwgSm9obiBHYXJyeSB3cm90ZToKPiBPbiAxNC8wNi8yMDIxIDE1 OjExLCBSb2JpbiBNdXJwaHkgd3JvdGU6Cj4+IE9uIDIwMjEtMDYtMTQgMDg6NTMsIEpvaG4gR2Fy cnkgd3JvdGU6Cj4+PiBPbiAxMi8wNi8yMDIxIDAzOjIyLCBMdSBCYW9sdSB3cm90ZToKPj4+PiBP biAyMDIxLzYvMTEgMjA6MjAsIEpvaG4gR2Fycnkgd3JvdGU6Cj4+Pj4+IEBAIC00NTMsOCArNDUy LDcgQEAgc3RhdGljIGludCBfX2luaXQgaW50ZWxfaW9tbXVfc2V0dXAoY2hhciAqc3RyKQo+Pj4+ PiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHByX3dhcm4oImludGVsX2lvbW11PWZvcmNl ZGFjIGRlcHJlY2F0ZWQ7IHVzZQo+Pj4+PiBpb21tdS5mb3JjZWRhYyBpbnN0ZWFkXG4iKTsKPj4+ Pj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBpb21tdV9kbWFfZm9yY2VkYWMgPSB0cnVl Owo+Pj4+PiDCoMKgwqDCoMKgwqDCoMKgwqDCoCB9IGVsc2UgaWYgKCFzdHJuY21wKHN0ciwgInN0 cmljdCIsIDYpKSB7Cj4+Pj4+IC3CoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHByX2luZm8oIkRpc2Fi bGUgYmF0Y2hlZCBJT1RMQiBmbHVzaFxuIik7Cj4+Pj4+IC3CoMKgwqDCoMKgwqDCoMKgwqDCoMKg IGludGVsX2lvbW11X3N0cmljdCA9IDE7Cj4+Pj4+ICvCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGlv bW11X3NldF9kbWFfc3RyaWN0KHRydWUpOwo+Pj4+IEkgd291bGQgbGlrZSB0byBkZXByZWNhdGUg dGhpcyBjb21tYW5kIGxpbmUgYW5kIGFzayB1c2VycyB0byB1c2UKPj4+PiBpb21tdS5zdHJpY3Qg aW5zdGVhZC4KPj4+IG9rLCBidXQgdGhlbiBJIHNob3VsZCBwcm9iYWJseSBtYWtlIHRoZSBBTUQg ZHJpdmVyIGFsc28gb2ZmaWNpYWxseQo+Pj4gc3VwcG9ydCB0aGlzLgo+PiBPb3BzLCBJIHNob3Vs ZCBoYXZlIGRvY3VtZW50ZWQgdGhhdCAiaW9tbXUuc3RyaWN0IiBhbHJlYWR5IGFwcGxpZXMgdG8K Pj4geDg2IGFzIHdlbGwuIFRoZSBpbnRlcmFjdGlvbiB3aXRoIHRoZSBkcml2ZXItc3BlY2lmaWMg cGFyYW1ldGVycyBpcyBhCj4+IGJpdCB3ZWlyZCBhbmQgdW5pbnR1aXRpdmUsIGJ1dCBpdCB3YXMg ZG9uZSBrbm93aW5nbHkuIExldCBtZSBxdWlja2x5Cj4+IHNwaW4gYSBrZXJuZWwtcGFyYW1ldGVy cy50eHQgZml4IGZvciB0aGF0Li4uCj4gCj4gU28gSSBhbHJlYWR5IGhhZCBhIHBlbmRpbmcgcGF0 Y2ggaGVyZSBmb3IgdGhlIHNhbWUgdG8gYmUgaW5jbHVkZWQgaW4gCj4gdGhpcyBzZXJpZXM6Cj4g aHR0cHM6Ly9naXRodWIuY29tL2hpc2lsaWNvbi9rZXJuZWwtZGV2L2NvbW1pdC8yMzc1YTJkODg4 ZDc4ZGU5ZWI3ZDkxZDZmMmM1ODkxMzk1MzAwYTk2IAo+IAo+IAo+IElmIHlvdSB3YW50IHRvIGRv IGl0LCB0aGVuIG9rLiBJIG1pZ2h0IGhhdmUgdG8gcmVvcmRlciB0aGUgc2VyaWVzIHRob3VnaC4u LgoKWWVhaCwgc29ycnkgZm9yIHRoZSBjb21wbGljYXRpb24uIFlvdXIgc3Vic2VxdWVudCBkZXBy ZWNhdGlvbiBvZiB0aGUgeDg2IApwYXJhbWV0ZXJzIGRvZXNuJ3QgbmVlZCB0byBjb25mbGljdCwg YnV0IHdlIHNob3VsZCBwcm9iYWJseSBhbHNvIHVwZGF0ZSAKdGhhdCB0aGUgZGVmYXVsdCB2YWx1 ZSBub3cgZGVwZW5kcyBvbiB0aGUga2VybmVsIGNvbmZpZywgd2hpY2ggd2lsbCA6KAoKVGhhbmtz LApSb2Jpbi4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K aW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBz Oi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11