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[109.252.170.211]) by smtp.googlemail.com with ESMTPSA id l188sm63762lfd.127.2020.09.29.22.48.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Sep 2020 22:48:49 -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> <03710107-b6ad-5256-4550-09c610d0fded@gmail.com> <20200930053930.GD31821@Asurada-Nvidia> From: Dmitry Osipenko Message-ID: Date: Wed, 30 Sep 2020 08:48:49 +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: <20200930053930.GD31821@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" MzAuMDkuMjAyMCAwODozOSwgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gT24gV2VkLCBTZXAg MzAsIDIwMjAgYXQgMDg6MjQ6MDJBTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtvIHdyb3RlOgo+PiAz MC4wOS4yMDIwIDAzOjMwLCBOaWNvbGluIENoZW4g0L/QuNGI0LXRgjoKPj4+ICsJLyoKPj4+ICsJ ICogSU9NTVUgY29yZSBhbGxvd3MgLUVOT0RFViByZXR1cm4gdG8gY2Fycnkgb24uIFNvIGJ5cGFz cyBhbnkgY2FsbAo+Pj4gKwkgKiBmcm9tIGJ1c19zZXRfaW9tbXUoKSBkdXJpbmcgdGVncmFfc21t dV9wcm9iZSgpLCBhcyBhIGRldmljZSB3aWxsCj4+PiArCSAqIGNhbGwgaW4gYWdhaW4gdmlhIG9m X2lvbW11X2NvbmZpZ3VyZSB3aGVuIGZ3c3BlYyBpcyBwcmVwYXJlZC4KPj4+ICsJICovCj4+PiAr CWlmICghbWMtPnNtbXUgfHwgIWZ3c3BlYyB8fCBmd3NwZWMtPm9wcyAhPSAmdGVncmFfc21tdV9v cHMpCj4+PiAgCQlyZXR1cm4gRVJSX1BUUigtRU5PREVWKTsKPj4KPj4gVGhlICFtYy0+c21tdSBj YW4ndCBiZSB0cnVlLgo+IAo+IEFyZSB5b3Ugc3VyZT8gSSBoYXZlIHJlbW92ZWQgdGhlICJtYy0+ c21tdSA9IHNtbXUiIGluIHByb2JlKCkgd2l0aAo+IHRoaXMgY2hhbmdlLiBTbyB0aGUgb25seSB0 aW1lICJtYy0+c21tdSA9PSAhTlVMTCIgaXMgYWZ0ZXIgcHJvYmUoKQo+IG9mIFNNTVUgZHJpdmVy IGlzIHJldHVybmVkLiBBcyBteSBjb21tZW50cyBzYXlzLCB0ZWdyYV9zbW11X3Byb2JlKCkKPiBj YWxscyBpbiB0aGlzIGZ1bmN0aW9uIHZpYSBidXNfc2V0X2lvbW11KCksIHNvIG1jLT5zbW11IGNh biBiZSBOVUxMCj4gaW4gdGhpcyBjYXNlLgo+IAoKSSBtaXNzZWQgdGhhdC4KX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0Cmlv bW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0 aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11