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[109.252.138.165]) by smtp.googlemail.com with ESMTPSA id v6sm1451504ljd.86.2022.02.21.12.02.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Feb 2022 12:02:29 -0800 (PST) Message-ID: Date: Mon, 21 Feb 2022 23:02:28 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH v3 9/9] drm/tegra: Support context isolation Content-Language: en-US To: Mikko Perttunen , Mikko Perttunen , thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org, will@kernel.org, robh+dt@kernel.org, robin.murphy@arm.com References: <20220218113952.3077606-1-mperttunen@nvidia.com> <20220218113952.3077606-10-mperttunen@nvidia.com> <2b4dd244-f918-4d26-2322-00a0bb226ccf@gmail.com> From: Dmitry Osipenko In-Reply-To: Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-tegra@vger.kernel.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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" MjEuMDIuMjAyMiAxNTowNiwgTWlra28gUGVydHR1bmVuINC/0LjRiNC10YI6Cj4gT24gMi8xOS8y MiAyMDozNSwgRG1pdHJ5IE9zaXBlbmtvIHdyb3RlOgo+PiAxOC4wMi4yMDIyIDE0OjM5LCBNaWtr byBQZXJ0dHVuZW4g0L/QuNGI0LXRgjoKPj4+ICvCoMKgwqAgaWYgKGNvbnRleHQtPm1lbW9yeV9j b250ZXh0ICYmCj4+PiBjb250ZXh0LT5jbGllbnQtPm9wcy0+Z2V0X3N0cmVhbWlkX29mZnNldCkg ewo+PiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgXl5eCj4+PiArwqDCoMKgwqDCoMKgwqAgaW50 IG9mZnNldCA9Cj4+PiBjb250ZXh0LT5jbGllbnQtPm9wcy0+Z2V0X3N0cmVhbWlkX29mZnNldChj b250ZXh0LT5jbGllbnQpOwo+Pj4gKwo+Pj4gK8KgwqDCoMKgwqDCoMKgIGlmIChvZmZzZXQgPj0g MCkgewo+Pj4gK8KgwqDCoMKgwqDCoMKgwqDCoMKgwqAgam9iLT5jb250ZXh0ID0gY29udGV4dC0+ bWVtb3J5X2NvbnRleHQ7Cj4+PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBqb2ItPmVuZ2luZV9z dHJlYW1pZF9vZmZzZXQgPSBvZmZzZXQ7Cj4+PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBob3N0 MXhfY29udGV4dF9nZXQoam9iLT5jb250ZXh0KTsKPj4+ICvCoMKgwqDCoMKgwqDCoCB9Cj4+Cj4+ IFlvdSBzaG91bGQgYnVtcCByZWZjb3VudCB1bmNvbmRpdGlvbmFsbHkgb3IgeW91J2xsIGdldCBy ZWZjbnQgdW5kZXJmbG93Cj4+IG9uIHB1dCwgd2hlbiBvZmZzZXQgPCAwLgo+IAo+IFRoaXMgcmVm Y291bnQgaXMgaW50ZW5kZWQgdG8gYmUgZHJvcHBlZCBmcm9tICdyZWxlYXNlX2pvYicsIHdoZXJl IGl0J3MKPiBkcm9wcGVkIGlmIGpvYi0+Y29udGV4dCBpcyBzZXQsIHdoaWNoIGl0IGlzIGZyb20g dGhpcyBwYXRoLgo+IAo+Pgo+Pj4gK8KgwqDCoCB9Cj4+PiArCj4+PiDCoMKgwqDCoMKgIC8qCj4+ PiDCoMKgwqDCoMKgwqAgKiBqb2JfZGF0YSBpcyBub3cgcGFydCBvZiBqb2IgcmVmZXJlbmNlIGNv dW50aW5nLCBzbyBkb24ndAo+Pj4gcmVsZWFzZQo+Pj4gwqDCoMKgwqDCoMKgICogaXQgZnJvbSBo ZXJlLgo+Pj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS90ZWdyYS91YXBpLmMgYi9kcml2 ZXJzL2dwdS9kcm0vdGVncmEvdWFwaS5jCj4+PiBpbmRleCA5YWI5MTc5ZDIwMjYuLmJlMzNkYTU0 ZDEyYyAxMDA2NDQKPj4+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS90ZWdyYS91YXBpLmMKPj4+ICsr KyBiL2RyaXZlcnMvZ3B1L2RybS90ZWdyYS91YXBpLmMKPj4+IEBAIC0zMyw2ICszMyw5IEBAIHN0 YXRpYyB2b2lkIHRlZ3JhX2RybV9jaGFubmVsX2NvbnRleHRfY2xvc2Uoc3RydWN0Cj4+PiB0ZWdy YV9kcm1fY29udGV4dCAqY29udGV4dCkKPj4+IMKgwqDCoMKgwqAgc3RydWN0IHRlZ3JhX2RybV9t YXBwaW5nICptYXBwaW5nOwo+Pj4gwqDCoMKgwqDCoCB1bnNpZ25lZCBsb25nIGlkOwo+Pj4gwqAg K8KgwqDCoCBpZiAoY29udGV4dC0+bWVtb3J5X2NvbnRleHQpCj4+PiArwqDCoMKgwqDCoMKgwqAg aG9zdDF4X2NvbnRleHRfcHV0KGNvbnRleHQtPm1lbW9yeV9jb250ZXh0KTsKPj4KPj4gVGhlICJp ZiAoY29udGV4dC0+bWVtb3J5X2NvbnRleHQgJiYKPj4gY29udGV4dC0+Y2xpZW50LT5vcHMtPmdl dF9zdHJlYW1pZF9vZmZzZXQpIiBhYm92ZSBkb2Vzbid0IG1hdGNoIHRoZSAiaWYKPj4gKGNvbnRl eHQtPm1lbW9yeV9jb250ZXh0KSIuIFlvdSdsbCBnZXQgcmVmY291bnQgdW5kZXJmbG93Lgo+IAo+ IEFuZCB0aGlzIGRyb3AgaXMgZm9yIHRoZSByZWZjb3VudCBpbXBsaWNpdGx5IGFkZGVkIHdoZW4g YWxsb2NhdGluZyB0aGUKPiBtZW1vcnkgY29udGV4dCB0aHJvdWdoIGhvc3QxeF9jb250ZXh0X2Fs bG9jOyBzbyB0aGVzZSB0d28gcGxhY2VzIHNob3VsZAo+IGJlIGluZGVwZW5kZW50Lgo+IAo+IFBs ZWFzZSBlbGFib3JhdGUgaWYgSSBtaXNzZWQgc29tZXRoaW5nLgoKWW91IG5hbWVkIGNvbnRleHQg YXMgbWVtb3J5X2NvbnRleHQgYW5kIHRoZW4gaGF2ZQpjb250ZXh0PWNvbnRleHQtPm1lbW9yeV9j b250ZXh0LiBQbGVhc2UgdHJ5IHRvIGltcHJvdmUgdGhlIHZhcmlhYmxlCm5hbWVzLCBsaWtlIGRy bV9jdHgtPmhvc3QxeF9jdHggZm9yIGV4YW1wbGUuCgpJJ20gYWxzbyBub3QgYSBiaWcgZmFuIG9m IHRoZSAiaWYgKHJlZikgcHV0KHJlZikiIHBhdHRlcm4uIFdvbid0IGJlCmJldHRlciB0byBtb3Zl IGFsbCB0aGUgImlmICghTlVMTCkiIGNoZWNrcyBpbnNpZGUgb2YgZ2V0KCkvcHV0KCkgYW5kCm1h a2UgdGhlIGludm9jYXRpb25zIHVuY29uZGl0aW9uYWw/Cl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5s aW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFp bG1hbi9saXN0aW5mby9pb21tdQ==