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([2a01:e0a:59e:9d80:527b:9dff:feef:3874]) by smtp.gmail.com with ESMTPSA id e24sm14675252wra.78.2021.12.07.02.28.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Dec 2021 02:28:34 -0800 (PST) Subject: Re: [RFC v16 0/9] SMMUv3 Nested Stage Setup (IOMMU part) To: Sumit Gupta , eric.auger.pro@gmail.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, jean-philippe@linaro.org, zhukeqian1@huawei.com References: <20211027104428.1059740-1-eric.auger@redhat.com> <4921cd06-065d-951d-d396-ee9843882c40@nvidia.com> From: Eric Auger Message-ID: <780faf42-e035-4bfd-252d-8d009355bd6c@redhat.com> Date: Tue, 7 Dec 2021 11:28:32 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <4921cd06-065d-951d-d396-ee9843882c40@nvidia.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: vivek.gautam@arm.com, yi.l.liu@intel.com, alex.williamson@redhat.com, ashok.raj@intel.com, maz@kernel.org, vsethi@nvidia.com, nicolinc@nvidia.com, zhangfei.gao@linaro.org, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, Pritesh Raithatha , nicoleotsuka@gmail.com, Sachin Nikam , wangxingang5@huawei.com, chenxiang66@hisilicon.com, vdumpa@nvidia.com, lushenming@huawei.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list Reply-To: eric.auger@redhat.com List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu SGkgU3VtaXQsCgpPbiAxMi8zLzIxIDI6MTMgUE0sIFN1bWl0IEd1cHRhIHdyb3RlOgo+IEhpIEVy aWMsCj4KPj4gVGhpcyBzZXJpZXMgYnJpbmdzIHRoZSBJT01NVSBwYXJ0IG9mIEhXIG5lc3RlZCBw YWdpbmcgc3VwcG9ydAo+PiBpbiB0aGUgU01NVXYzLgo+Pgo+PiBUaGUgU01NVXYzIGRyaXZlciBp cyBhZGFwdGVkIHRvIHN1cHBvcnQgMiBuZXN0ZWQgc3RhZ2VzLgo+Pgo+PiBUaGUgSU9NTVUgQVBJ IGlzIGV4dGVuZGVkIHRvIGNvbnZleSB0aGUgZ3Vlc3Qgc3RhZ2UgMQo+PiBjb25maWd1cmF0aW9u IGFuZCB0aGUgaG9vayBpcyBpbXBsZW1lbnRlZCBpbiB0aGUgU01NVXYzIGRyaXZlci4KPj4KPj4g VGhpcyBhbGxvd3MgdGhlIGd1ZXN0IHRvIG93biB0aGUgc3RhZ2UgMSB0YWJsZXMgYW5kIGNvbnRl eHQKPj4gZGVzY3JpcHRvcnMgKHNvLWNhbGxlZCBQQVNJRCB0YWJsZSkgd2hpbGUgdGhlIGhvc3Qg b3ducyB0aGUKPj4gc3RhZ2UgMiB0YWJsZXMgYW5kIG1haW4gY29uZmlndXJhdGlvbiBzdHJ1Y3R1 cmVzIChTVEUpLgo+Pgo+PiBUaGlzIHdvcmsgbWFpbmx5IGlzIHByb3ZpZGVkIGZvciB0ZXN0IHB1 cnBvc2UgYXMgdGhlIHVwcGVyCj4+IGxheWVyIGludGVncmF0aW9uIGlzIHVuZGVyIHJld29yayBh bmQgYm91bmQgdG8gYmUgYmFzZWQgb24KPj4gL2Rldi9pb21tdSBpbnN0ZWFkIG9mIFZGSU8gdHVu bmVsaW5nLiBJbiB0aGlzIHZlcnNpb24gd2UgYWxzbyBnZXQKPj4gcmlkIG9mIHRoZSBNU0kgQklO RElORyBpb2N0bCwgYXNzdW1pbmcgdGhlIGd1ZXN0IGVuZm9yY2VzCj4+IGZsYXQgbWFwcGluZyBv ZiBob3N0IElPVkFzIHVzZWQgdG8gYmluZCBwaHlzaWNhbCBNU0kgZG9vcmJlbGxzLgo+PiBJbiB0 aGUgY3VycmVudCBRRU1VIGludGVncmF0aW9uIHRoaXMgaXMgYWNoaWV2ZWQgYnkgZXhwb3NpbmcK Pj4gUk1ScyB0byB0aGUgZ3Vlc3QsIHVzaW5nIFNoYW1lZXIncyBzZXJpZXMgWzFdLiBUaGlzIGFw cHJvYWNoCj4+IGlzIFJGQyBhcyB0aGUgSU9SVCBzcGVjIGlzIG5vdCByZWFsbHkgbWVhbnQgdG8g ZG8gdGhhdAo+PiAoc2luZ2xlIG1hcHBpbmcgZmxhZyBsaW1pdGF0aW9uKS4KPj4KPj4gQmVzdCBS ZWdhcmRzCj4+Cj4+IEVyaWMKPj4KPj4gVGhpcyBzZXJpZXMgKEhvc3QpIGNhbiBiZSBmb3VuZCBh dDoKPj4gaHR0cHM6Ly9naXRodWIuY29tL2VhdWdlci9saW51eC90cmVlL3Y1LjE1LXJjNy1uZXN0 ZWQtdjE2Cj4+IFRoaXMgaW5jbHVkZXMgYSByZWJhc2VkIFZGSU8gaW50ZWdyYXRpb24gKGFsdGhv dWdoIG5vdCBtZWFudAo+PiB0byBiZSB1cHN0cmVhbWVkKQo+Pgo+PiBHdWVzdCBrZXJuZWwgYnJh bmNoIGNhbiBiZSBmb3VuZCBhdDoKPj4gaHR0cHM6Ly9naXRodWIuY29tL2VhdWdlci9saW51eC90 cmVlL3NoYW1lZXJfcm1ycl92Nwo+PiBmZWF0dXJpbmcgWzFdCj4+Cj4+IFFFTVUgaW50ZWdyYXRp b24gKHN0aWxsIGJhc2VkIG9uIFZGSU8gYW5kIGV4cG9zaW5nIFJNUnMpCj4+IGNhbiBiZSBmb3Vu ZCBhdDoKPj4gaHR0cHM6Ly9naXRodWIuY29tL2VhdWdlci9xZW11L3RyZWUvdjYuMS4wLXJtci12 Mi1uZXN0ZWRfc21tdXYzX3YxMAo+PiAodXNlIGlvbW11PW5lc3RlZC1zbW11djMgQVJNIHZpcnQg b3B0aW9uKQo+Pgo+PiBHdWVzdCBkZXBlbmRlbmN5Ogo+PiBbMV0gW1BBVENIIHY3IDAvOV0gQUNQ SS9JT1JUOiBTdXBwb3J0IGZvciBJT1JUIFJNUiBub2RlCj4+Cj4+IEhpc3Rvcnk6Cj4+Cj4+IHYx NSAtPiB2MTY6Cj4+IC0gZ3Vlc3QgUklMIG11c3Qgc3VwcG9ydCBSSUwKPj4gLSBhZGRpdGlvbmFs IGNoZWNrcyBpbiB0aGUgY2FjaGUgaW52YWxpZGF0aW9uIGhvb2sKPj4gLSByZW1vdmFsIG9mIHRo ZSBNU0kgQklORElORyBpb2N0bCAodGVudGF0aXZlIHJlcGxhY2VtZW50Cj4+IMKgwqAgYnkgUk1S cykKPj4KPj4KPj4gRXJpYyBBdWdlciAoOSk6Cj4+IMKgwqAgaW9tbXU6IEludHJvZHVjZSBhdHRh Y2gvZGV0YWNoX3Bhc2lkX3RhYmxlIEFQSQo+PiDCoMKgIGlvbW11OiBJbnRyb2R1Y2UgaW9tbXVf Z2V0X25lc3RpbmcKPj4gwqDCoCBpb21tdS9zbW11djM6IEFsbG93IHMxIGFuZCBzMiBjb25maWdz IHRvIGNvZXhpc3QKPj4gwqDCoCBpb21tdS9zbW11djM6IEdldCBwcmVwYXJlZCBmb3IgbmVzdGVk IHN0YWdlIHN1cHBvcnQKPj4gwqDCoCBpb21tdS9zbW11djM6IEltcGxlbWVudCBhdHRhY2gvZGV0 YWNoX3Bhc2lkX3RhYmxlCj4+IMKgwqAgaW9tbXUvc21tdXYzOiBBbGxvdyBzdGFnZSAxIGludmFs aWRhdGlvbiB3aXRoIHVubWFuYWdlZCBBU0lEcwo+PiDCoMKgIGlvbW11L3NtbXV2MzogSW1wbGVt ZW50IGNhY2hlX2ludmFsaWRhdGUKPj4gwqDCoCBpb21tdS9zbW11djM6IHJlcG9ydCBhZGRpdGlv bmFsIHJlY292ZXJhYmxlIGZhdWx0cwo+PiDCoMKgIGlvbW11L3NtbXV2MzogRGlzYWxsb3cgbmVz dGVkIG1vZGUgaW4gcHJlc2VuY2Ugb2YgSFcgTVNJIHJlZ2lvbnMKPiBIaSBFcmljLAo+Cj4gSSB2 YWxpZGF0ZWQgdGhlIHJld29ya2VkIHRlc3QgcGF0Y2hlcyBpbiB2MTYgZnJvbSB0aGUgZ2l2ZW4K PiBicmFuY2hlcyB3aXRoIEtlcm5lbCB2NS4xNSAmIFFlbXUgdjYuMi4gVmVyaWZpZWQgdGhlbSB3 aXRoCj4gTlZNZSBQQ0kgZGV2aWNlIGFzc2lnbmVkIHRvIEd1ZXN0IFZNLgo+IFNvcnJ5LCBmb3Jn b3QgdG8gdXBkYXRlIGVhcmxpZXIuCj4KPiBUZXN0ZWQtYnk6IFN1bWl0IEd1cHRhIDxzdW1pdGdA bnZpZGlhLmNvbT4KClRoYW5rIHlvdSB2ZXJ5IG11Y2ghCgpCZXN0IFJlZ2FyZHMKCkVyaWMKPgo+ IFRoYW5rcywKPiBTdW1pdCBHdXB0YQo+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwprdm1hcm0gbWFpbGluZyBsaXN0Cmt2bWFybUBsaXN0cy5jcy5jb2x1 bWJpYS5lZHUKaHR0cHM6Ly9saXN0cy5jcy5jb2x1bWJpYS5lZHUvbWFpbG1hbi9saXN0aW5mby9r dm1hcm0K