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[109.252.170.211]) by smtp.googlemail.com with ESMTPSA id e8sm1114886lja.93.2020.08.30.12.44.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 30 Aug 2020 12:44:39 -0700 (PDT) Subject: Re: [PATCH 16/18] staging/media/tegra-vde: Clean up IOMMU workaround To: Thierry Reding References: <3535c205b9bce52556abbf2f63384fb38e009df9.1597931876.git.robin.murphy@arm.com> <07135a55-cbc9-83e5-60dc-731282192554@gmail.com> <62a72187-442b-2103-46c3-39d3cd999f54@gmail.com> <20200827155446.GB1660457@ulmo> From: Dmitry Osipenko Message-ID: Date: Sun, 30 Aug 2020 22:44:38 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200827155446.GB1660457@ulmo> Content-Language: en-US Cc: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, laurent.pinchart@ideasonboard.com, will@kernel.org, hch@lst.de, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, linux@armlinux.org.uk, jonathanh@nvidia.com, agross@kernel.org, kyungmin.park@samsung.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, inki.dae@samsung.com, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org, Robin Murphy 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" MjcuMDguMjAyMCAxODo1NCwgVGhpZXJyeSBSZWRpbmcg0L/QuNGI0LXRgjoKLi4uCj4+IFRoZSBU ZWdyYSBEUk0gaGFzIGEgdmVyeSBzcGVjaWFsIHF1aXJrIGZvciBBUk0zMiB0aGF0IHdhcyBhZGRl ZCBpbiB0aGlzCj4+IGNvbW1pdCBbMl0gYW5kIGRyaXZlciByZWxpZXMgb24gY2hlY2tpbmcgb2Yg d2hldGhlciBleHBsaWNpdCBvciBpbXBsaWNpdAo+PiBJT01NVSBpcyB1c2VkIGluIG9yZGVyIHRv IGFjdGl2YXRlIHRoZSBxdWlyay4KPj4KPj4gWzJdCj4+IGh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcv cHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L25leHQvbGludXgtbmV4dC5naXQvY29tbWl0Lz9pZD0y NzNkYTVhMDQ2OTY1Y2NmMGVjNzllYjYzZjJkNTE3MzQ2N2UyMGZhCj4+Cj4+IE9uY2UgdGhlIGlt cGxpY2l0IElPTU1VIGlzIHVzZWQgZm9yIHRoZSBEUk0gZHJpdmVyLCB0aGUgcXVpcmsgbm8gbG9u Z2VyCj4+IHdvcmtzIChpZiBJJ20gbm90IG1pc3Npbmcgc29tZXRoaW5nKS4gVGhpcyBwcm9ibGVt IG5lZWRzIHRvIGJlIHJlc29sdmVkCj4+IGJlZm9yZSBpbXBsaWNpdCBJT01NVSBjb3VsZCBiZSB1 c2VkIGJ5IHRoZSBUZWdyYSBEUk0gb24gQVJNMzIuCi4uLgo+IEkgZG8gaGF2ZSBhIHBhdGNoIGx5 aW5nIGFyb3VuZCBzb21ld2hlcmUgdGhhdCBpbXBsZW1lbnRzIHRoZSBtYXBwaW5nCj4gY2FjaGUg dGhhdCB3YXMgcmVmZXJlbmNlZCBpbiB0aGUgYWJvdmUgY29tbWl0LiBMZXQgbWUga25vdyBpZiBJ IHNob3VsZAo+IGRpZyB0aGF0IHVwIGFuZCBzZW5kIGl0IG91dC4KCkhlbGxvLCBUaGllcnJ5ISBJ dCBjZXJ0YWlubHkgd2lsbCBiZSBpbnRlcmVzdGluZyB0byB0YWtlIGEgbG9vayBhdCB5b3Vycwpw YXRjaCEKCkkgdGhpbmsgdGhhdCB0aGUgY2FjaGluZyBzaG91bGRuJ3QgYmUgc3RyaWN0bHkgbmVj ZXNzYXJ5IGZvciBrZWVwaW5nIHRoZQpjdXJyZW50IHdvcmthcm91bmQgd29ya2luZyBhbmQgaXQg c2hvdWxkIGJlIHBvc3NpYmxlIHRvIGtlZXAgdGhlIGNvZGUKYXMtaXMgYnkgcmVwbGFjaW5nIHRo ZSBkb21haW4tdHlwZSBjaGVja2luZyB3aXRoIHRoZSBTb0MtZ2VuZXJhdGlvbgpjaGVjayBpbiB0 aGUgVGVncmEgRFJNIGRyaXZlci4KCkluIGdlbmVyYWwsIElNTyBpdCBzaG91bGQgYmUgYmV0dGVy IHRvIHN0YXNoIHRoZSBjb21wbGV4IGNoYW5nZXMgdW50aWwKd2UnbGwgZ2V0IGNsb3NlciB0byBh ZG9wdGluZyB0aGUgbmV3IFVBUEkgYXMgaXQgd2lsbCBjZXJ0YWlubHkgdG91Y2ggdGhlCmFzcGVj dCBvZiB0aGUgcGVyLWRldmljZSBtYXBwaW5ncy4gQnV0IGlmIHlvdXJzIHBhdGNoIGlzIGxlc3Mg dGhhbiAxMDAKTE9DLCB0aGVuIG1heWJlIHdlIGNvdWxkIGNvbnNpZGVyIGFwcGx5aW5nIGl0IHJp Z2h0IG5vdyEKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K aW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBz Oi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11