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[109.252.170.211]) by smtp.googlemail.com with ESMTPSA id m13sm73838lfl.269.2020.09.29.23.33.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Sep 2020 23:33:37 -0700 (PDT) Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev To: Nicolin Chen References: <20200930003013.31289-1-nicoleotsuka@gmail.com> <20200930003013.31289-3-nicoleotsuka@gmail.com> <75514da5-e63a-9e51-8376-abbd12c324d1@gmail.com> <20200930054900.GG31821@Asurada-Nvidia> <20200930061351.GA16460@Asurada-Nvidia> From: Dmitry Osipenko Message-ID: <9a1ec0bf-3020-2045-229c-a350c9c9fc2e@gmail.com> Date: Wed, 30 Sep 2020 09:33:36 +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: <20200930061351.GA16460@Asurada-Nvidia> Content-Language: en-US Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, krzk@kernel.org, jonathanh@nvidia.com, thierry.reding@gmail.com, linux-tegra@vger.kernel.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" MzAuMDkuMjAyMCAwOToxMywgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gT24gV2VkLCBTZXAg MzAsIDIwMjAgYXQgMDk6MTA6MzhBTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtvIHdyb3RlOgo+PiAz MC4wOS4yMDIwIDA4OjQ5LCBOaWNvbGluIENoZW4g0L/QuNGI0LXRgjoKPj4+IE9uIFdlZCwgU2Vw IDMwLCAyMDIwIGF0IDA4OjExOjUyQU0gKzAzMDAsIERtaXRyeSBPc2lwZW5rbyB3cm90ZToKPj4+ PiAzMC4wOS4yMDIwIDAzOjMwLCBOaWNvbGluIENoZW4g0L/QuNGI0LXRgjoKPj4+Pj4gKwkvKiBB biBpbnZhbGlkIG1jIHBvaW50ZXIgbWVhbnMgbWMgYW5kIHNtbXUgZHJpdmVycyBhcmUgbm90IHJl YWR5ICovCj4+Pj4+ICsJaWYgKElTX0VSUl9PUl9OVUxMKG1jKSkKPj4+Pgo+Pj4+IHRlZ3JhX2dl dF9tZW1vcnlfY29udHJvbGxlcigpIGRvZXNuJ3QgcmV0dXJuIE5VTEwuCj4+Pgo+Pj4gV2VsbCwg SSBkb24ndCB3YW50IHRvIGFzc3VtZSB0aGF0IGl0J2QgZG8gdGhhdCBmb3JldmVyLCBhbmQgdGhl Cj4+PiBOVUxMIGNoZWNrIG9mIElTX0VSUl9PUl9OVUxMIGlzIG1hcmtlZCAidW5saWtlbHkiIHNv IGl0IGRvZXNuJ3QKPj4+IGh1cnQgdG8gaGF2ZS4KPj4+Cj4+Cj4+IEkgZG9uJ3Qgc2VlIGFueSBy ZWFzb25zIHdoeSBpdCB3b24ndCBkbyB0aGF0IGZvcmV2ZXIuCj4+Cj4+IFNlY29uZGx5LCBwdWJs aWMgZnVuY3Rpb24gY2FuJ3QgYmUgY2hhbmdlZCByYW5kb21seSB3aXRob3V0IHVwZGF0aW5nIGFs bAo+PiB0aGUgY2FsbGVycy4KPj4KPj4gSGVuY2UgdGhlcmUgaXMgbm8gbmVlZCB0byBoYW5kbGUg Y2FzZXMgdGhhdCBjYW4ndCBldmVyIGhhcHBlbiBhbmQgaXQKPj4gaHVydHMgcmVhZGFiaWxpdHkg b2YgdGhlIGNvZGUgKyBvcmlnaW5hbCBlcnJvciBjb2RlIGlzIG1pc3NlZC4KPiAKPiBJIGRvbid0 IHF1aXRlIHVuZGVyc3RhbmQgd2h5IGFuIGV4dHJhICJfT1JfTlVMTCIgd291bGQgaHVydAo+IHJl YWRhYmlsaXR5Li4uLmJ1dCBJJ2QgdGFrZSBhIHN0ZXAgYmFjayBhbmQgdXNlIElTX0VSUigpLgo+ IAoKVGhlIHRlZ3JhX2dldF9tZW1vcnlfY29udHJvbGxlcigpIGRvZXNuJ3QgcmV0dXJuIE5VTEws IGhlbmNlIHRoZQpOVUxMLWNoZWNrIGlzIG1pc2xlYWRpbmcuCgpJZiBJIHdhcyByZWFkaW5nIHRo YXQgY29kZSBmb3IgdGhlIGZpcnN0IHRpbWUgYW5kIG5vdGljZSBzdWNoIGEgdGhpbmcsCnRoZW4g aW5zdGFudGx5IEknZCBoYXZlIGEgbXVjaCBsb3dlciBjcmVkaWJpbGl0eSB0byB0aGUgd2hvbGUg Y29kZS4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9t bXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8v bGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11