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[109.252.193.103]) by smtp.googlemail.com with ESMTPSA id y16sm938774ljh.13.2021.04.24.13.27.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 24 Apr 2021 13:27:11 -0700 (PDT) Subject: Re: [PATCH v1 2/2] iommu/tegra-smmu: Revert workaround that was needed for Nyan Big Chromebook From: Dmitry Osipenko To: Guillaume Tucker , Nicolin Chen , Thierry Reding References: <20210328233256.20494-1-digetx@gmail.com> <20210328233256.20494-2-digetx@gmail.com> <20210401085549.GA31146@Asurada-Nvidia> <50a7e4c7-0e72-534a-a317-366e455213c1@gmail.com> <724e683f-5317-cdf7-7351-fcfd42b7b607@gmail.com> Message-ID: <5ec2be61-a70e-e3b1-9267-414793c32a04@gmail.com> Date: Sat, 24 Apr 2021 23:27:10 +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: <724e683f-5317-cdf7-7351-fcfd42b7b607@gmail.com> Content-Language: en-US Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Jonathan Hunter , 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" MjMuMDQuMjAyMSAxODoyMywgRG1pdHJ5IE9zaXBlbmtvINC/0LjRiNC10YI6Cj4gMjMuMDQuMjAy MSAxODowMSwgR3VpbGxhdW1lIFR1Y2tlciDQv9C40YjQtdGCOgo+PiBPbiAwMi8wNC8yMDIxIDE1 OjQwLCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+PiAwMS4wNC4yMDIxIDExOjU1LCBOaWNvbGlu IENoZW4g0L/QuNGI0LXRgjoKPj4+PiBPbiBNb24sIE1hciAyOSwgMjAyMSBhdCAwMjozMjo1NkFN ICswMzAwLCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+Pj4+IFRoZSBwcmV2aW91cyBjb21taXQg Zml4ZXMgcHJvYmxlbSB3aGVyZSBkaXNwbGF5IGNsaWVudCB3YXMgYXR0YWNoaW5nIHRvbwo+Pj4+ PiBlYXJseSB0byBJT01NVSBkdXJpbmcga2VybmVsIGJvb3QgaW4gYSBtdWx0aS1wbGF0Zm9ybSBr ZXJuZWwgY29uZmlndXJhdGlvbgo+Pj4+PiB3aGljaCBlbmFibGVzIENPTkZJR19BUk1fRE1BX1VT RV9JT01NVT15LiBUaGUgd29ya2Fyb3VuZCB0aGF0IGhlbHBlZCB0bwo+Pj4+PiBkZWZlciB0aGUg SU9NTVUgYXR0YWNobWVudCBmb3IgTnlhbiBCaWcgQ2hyb21lYm9vayBpc24ndCBuZWVkZWQgYW55 bW9yZSwKPj4+Pj4gcmV2ZXJ0IGl0Lgo+Pj4+Cj4+Pj4gU29ycnkgZm9yIHRoZSBsYXRlIHJlcGx5 LiBJIGhhdmUgYmVlbiBidXN5IHdpdGggZG93bnN0cmVhbSB0YXNrcy4KPj4+Pgo+Pj4+IEkgd2ls bCBnaXZlIHRoZW0gYSB0cnkgYnkgdGhlIGVuZCBvZiB0aGUgd2Vlay4gWWV0LCBwcm9iYWJseSBp dCdkCj4+Pj4gYmUgYmV0dGVyIHRvIGluY2x1ZGUgR3VpbGxhdW1lIGFsc28gYXMgaGUgaGFzIHRo ZSBOeWFuIHBsYXRmb3JtLgo+Pj4+Cj4+Pgo+Pj4gSW5kZWVkLCB0aGFua3MuIEFsdGhvdWdoLCBJ J20gcHJldHR5IHN1cmUgdGhhdCBpdCdzIHRoZSBzYW1lIGlzc3VlIHdoaWNoCj4+PiBJIHJlcHJv ZHVjZWQgb24gTmV4dXMgNy4KPj4+Cj4+PiBHdWlsbGF1bWUsIGNvdWxkIHlvdSBwbGVhc2UgZ2l2 ZSBhIHRlc3QgdG8gdGhlc2UgcGF0Y2hlcyBvbiBOeWFuIEJpZz8KPj4+IFRoZXJlIHNob3VsZCBi ZSBubyBFTUVNIGVycm9ycyBpbiB0aGUga2VybmVsIGxvZyB3aXRoIHRoaXMgcGF0Y2hlcy4KPj4+ Cj4+PiBodHRwczovL3BhdGNod29yay5vemxhYnMub3JnL3Byb2plY3QvbGludXgtdGVncmEvbGlz dC8/c2VyaWVzPTIzNjIxNQo+Pgo+PiBTbyBzb3JyeSBmb3IgdGhlIHZlcnkgbGF0ZSByZXBseS4g IEkgaGF2ZSB0cmllZCB0aGUgcGF0Y2hlcyBidXQKPj4gaGl0IHNvbWUgaXNzdWVzIG9uIGxpbnV4 LW5leHQsIGl0J3Mgbm90IHJlYWNoaW5nIGEgbG9naW4gcHJvbXB0Cj4+IHdpdGggbmV4dC0yMDIx MDQyMi4gIFNvIEkgdGhlbiB0cmllZCB3aXRoIG5leHQtMjAyMTA0MTkgd2hpY2gKPj4gZG9lcyBi b290IGJ1dCBzaG93cyB0aGUgSU9NTVUgZXJyb3I6Cj4+Cj4+IDw2PlsgICAgMi45OTUzNDFdIHRl Z3JhLWRjIDU0MjAwMDAwLmRjOiBBZGRpbmcgdG8gaW9tbXUgZ3JvdXAgMQo+PiA8ND5bICAgIDMu MDAxMDcwXSBGYWlsZWQgdG8gYXR0YWNoZWQgZGV2aWNlIDU0MjAwMDAwLmRjIHRvIElPTU1VX21h cHBpbmcgIAo+Pgo+PiAgIGh0dHBzOi8vbGF2YS5jb2xsYWJvcmEuY28udWsvc2NoZWR1bGVyL2pv Yi8zNTcwMDUyI0wxMTIwCj4+Cj4+IFRoZSBicmFuY2ggSSdtIHVzaW5nIHdpdGggdGhlIHBhdGNo ZXMgYXBwbGllZCBjYW4gYmUgZm91bmQgaGVyZToKPj4KPj4gICBodHRwczovL2dpdGxhYi5jb2xs YWJvcmEuY29tL2d0dWNrZXIvbGludXgvLS9jb21taXRzL25leHQtMjAyMTA0MTktbnlhbi1iaWct ZHJtLXJlYWQvCj4+Cj4+IEhvcGUgdGhpcyBoZWxwcywgbGV0IG1lIGtub3cgaWYgeW91IG5lZWQg YW55dGhpbmcgZWxzZSB0byBiZQo+PiB0ZXN0ZWQuCj4gCj4gCj4gSGVsbG8gR3VpbGxhdW1lLAo+ IAo+IFRoZSBjdXJyZW50IGxpbnV4LW5leHQgZG9lc24ndCBib290IG9uIGFsbCBBUk0gKEFGQUlL KSwgdGhlIG9sZGVyCj4gbmV4dC0yMDIxMDQxMyB3b3Jrcy4gVGhlIGFib3ZlIG1lc3NhZ2Ugc2hv dWxkIGJlIHVucmVsYXRlZCB0byB0aGUgYm9vdAo+IHByb2JsZW0uIEl0IHNob3VsZCBiZSBva2F5 IHRvIGlnbm9yZSB0aGF0IG1lc3NhZ2UgYXMgaXQgc2hvdWxkIGJlCj4gaGFybWxlc3MgaW4geW91 cnMgY2FzZS4KPiAKCkFsdGhvdWdoLCB0aGUgMjAyMTA0MTkgc2hvdWxkIGJlIGdvb2QuCgpUaGll cnJ5LCBkbyB5b3Uga25vdyB3aGF0IHRob3NlIFNPUiBhbmQgTm91dmVhdSBpc3N1ZXMgYXJlIGFi b3V0PwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21t dSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9s aXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=