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[109.252.193.103]) by smtp.googlemail.com with ESMTPSA id c2sm581127lfi.143.2021.04.23.08.23.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Apr 2021 08:23:24 -0700 (PDT) Subject: Re: [PATCH v1 2/2] iommu/tegra-smmu: Revert workaround that was needed for Nyan Big Chromebook To: Guillaume Tucker , Nicolin Chen References: <20210328233256.20494-1-digetx@gmail.com> <20210328233256.20494-2-digetx@gmail.com> <20210401085549.GA31146@Asurada-Nvidia> <50a7e4c7-0e72-534a-a317-366e455213c1@gmail.com> From: Dmitry Osipenko Message-ID: <724e683f-5317-cdf7-7351-fcfd42b7b607@gmail.com> Date: Fri, 23 Apr 2021 18:23:22 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Jonathan Hunter , Thierry Reding , linux-tegra@vger.kernel.org, Will Deacon 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" MjMuMDQuMjAyMSAxODowMSwgR3VpbGxhdW1lIFR1Y2tlciDQv9C40YjQtdGCOgo+IE9uIDAyLzA0 LzIwMjEgMTU6NDAsIERtaXRyeSBPc2lwZW5rbyB3cm90ZToKPj4gMDEuMDQuMjAyMSAxMTo1NSwg Tmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4+PiBPbiBNb24sIE1hciAyOSwgMjAyMSBhdCAwMjoz Mjo1NkFNICswMzAwLCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+Pj4gVGhlIHByZXZpb3VzIGNv bW1pdCBmaXhlcyBwcm9ibGVtIHdoZXJlIGRpc3BsYXkgY2xpZW50IHdhcyBhdHRhY2hpbmcgdG9v Cj4+Pj4gZWFybHkgdG8gSU9NTVUgZHVyaW5nIGtlcm5lbCBib290IGluIGEgbXVsdGktcGxhdGZv cm0ga2VybmVsIGNvbmZpZ3VyYXRpb24KPj4+PiB3aGljaCBlbmFibGVzIENPTkZJR19BUk1fRE1B X1VTRV9JT01NVT15LiBUaGUgd29ya2Fyb3VuZCB0aGF0IGhlbHBlZCB0bwo+Pj4+IGRlZmVyIHRo ZSBJT01NVSBhdHRhY2htZW50IGZvciBOeWFuIEJpZyBDaHJvbWVib29rIGlzbid0IG5lZWRlZCBh bnltb3JlLAo+Pj4+IHJldmVydCBpdC4KPj4+Cj4+PiBTb3JyeSBmb3IgdGhlIGxhdGUgcmVwbHku IEkgaGF2ZSBiZWVuIGJ1c3kgd2l0aCBkb3duc3RyZWFtIHRhc2tzLgo+Pj4KPj4+IEkgd2lsbCBn aXZlIHRoZW0gYSB0cnkgYnkgdGhlIGVuZCBvZiB0aGUgd2Vlay4gWWV0LCBwcm9iYWJseSBpdCdk Cj4+PiBiZSBiZXR0ZXIgdG8gaW5jbHVkZSBHdWlsbGF1bWUgYWxzbyBhcyBoZSBoYXMgdGhlIE55 YW4gcGxhdGZvcm0uCj4+Pgo+Pgo+PiBJbmRlZWQsIHRoYW5rcy4gQWx0aG91Z2gsIEknbSBwcmV0 dHkgc3VyZSB0aGF0IGl0J3MgdGhlIHNhbWUgaXNzdWUgd2hpY2gKPj4gSSByZXByb2R1Y2VkIG9u IE5leHVzIDcuCj4+Cj4+IEd1aWxsYXVtZSwgY291bGQgeW91IHBsZWFzZSBnaXZlIGEgdGVzdCB0 byB0aGVzZSBwYXRjaGVzIG9uIE55YW4gQmlnPwo+PiBUaGVyZSBzaG91bGQgYmUgbm8gRU1FTSBl cnJvcnMgaW4gdGhlIGtlcm5lbCBsb2cgd2l0aCB0aGlzIHBhdGNoZXMuCj4+Cj4+IGh0dHBzOi8v cGF0Y2h3b3JrLm96bGFicy5vcmcvcHJvamVjdC9saW51eC10ZWdyYS9saXN0Lz9zZXJpZXM9MjM2 MjE1Cj4gCj4gU28gc29ycnkgZm9yIHRoZSB2ZXJ5IGxhdGUgcmVwbHkuICBJIGhhdmUgdHJpZWQg dGhlIHBhdGNoZXMgYnV0Cj4gaGl0IHNvbWUgaXNzdWVzIG9uIGxpbnV4LW5leHQsIGl0J3Mgbm90 IHJlYWNoaW5nIGEgbG9naW4gcHJvbXB0Cj4gd2l0aCBuZXh0LTIwMjEwNDIyLiAgU28gSSB0aGVu IHRyaWVkIHdpdGggbmV4dC0yMDIxMDQxOSB3aGljaAo+IGRvZXMgYm9vdCBidXQgc2hvd3MgdGhl IElPTU1VIGVycm9yOgo+IAo+IDw2PlsgICAgMi45OTUzNDFdIHRlZ3JhLWRjIDU0MjAwMDAwLmRj OiBBZGRpbmcgdG8gaW9tbXUgZ3JvdXAgMQo+IDw0PlsgICAgMy4wMDEwNzBdIEZhaWxlZCB0byBh dHRhY2hlZCBkZXZpY2UgNTQyMDAwMDAuZGMgdG8gSU9NTVVfbWFwcGluZyAgCj4gCj4gICBodHRw czovL2xhdmEuY29sbGFib3JhLmNvLnVrL3NjaGVkdWxlci9qb2IvMzU3MDA1MiNMMTEyMAo+IAo+ IFRoZSBicmFuY2ggSSdtIHVzaW5nIHdpdGggdGhlIHBhdGNoZXMgYXBwbGllZCBjYW4gYmUgZm91 bmQgaGVyZToKPiAKPiAgIGh0dHBzOi8vZ2l0bGFiLmNvbGxhYm9yYS5jb20vZ3R1Y2tlci9saW51 eC8tL2NvbW1pdHMvbmV4dC0yMDIxMDQxOS1ueWFuLWJpZy1kcm0tcmVhZC8KPiAKPiBIb3BlIHRo aXMgaGVscHMsIGxldCBtZSBrbm93IGlmIHlvdSBuZWVkIGFueXRoaW5nIGVsc2UgdG8gYmUKPiB0 ZXN0ZWQuCgoKSGVsbG8gR3VpbGxhdW1lLAoKVGhlIGN1cnJlbnQgbGludXgtbmV4dCBkb2Vzbid0 IGJvb3Qgb24gYWxsIEFSTSAoQUZBSUspLCB0aGUgb2xkZXIKbmV4dC0yMDIxMDQxMyB3b3Jrcy4g VGhlIGFib3ZlIG1lc3NhZ2Ugc2hvdWxkIGJlIHVucmVsYXRlZCB0byB0aGUgYm9vdApwcm9ibGVt LiBJdCBzaG91bGQgYmUgb2theSB0byBpZ25vcmUgdGhhdCBtZXNzYWdlIGFzIGl0IHNob3VsZCBi ZQpoYXJtbGVzcyBpbiB5b3VycyBjYXNlLgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91 bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlz dGluZm8vaW9tbXU=