From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: [PATCH v7] Add udmabuf misc device Date: Tue, 11 Sep 2018 12:50:58 +0300 Message-ID: <18750721.r4B5nx0M26@avalon> References: <20180827093444.23623-1-kraxel@redhat.com> <21053714.0Xa7F2u2PE@avalon> <20180911065014.vo6qp6hkb7cjftdc@sirius.home.kraxel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180911065014.vo6qp6hkb7cjftdc@sirius.home.kraxel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Gerd Hoffmann Cc: "open list:KERNEL SELFTEST FRAMEWORK" , Tomeu Vizoso , Jonathan Corbet , David Airlie , linux-api@vger.kernel.org, "open list:DOCUMENTATION" , open list , dri-devel@lists.freedesktop.org, "moderated list:DMA BUFFER SHARING FRAMEWORK" , Shuah Khan , "open list:DMA BUFFER SHARING FRAMEWORK" List-Id: linux-api@vger.kernel.org SGkgR2VyZCwKCk9uIFR1ZXNkYXksIDExIFNlcHRlbWJlciAyMDE4IDA5OjUwOjE0IEVFU1QgR2Vy ZCBIb2ZmbWFubiB3cm90ZToKPiAgIEhpLAo+IAo+ID4+ICsjZGVmaW5lIFVETUFCVUZfQ1JFQVRF ICAgICAgIF9JT1coJ3UnLCAweDQyLCBzdHJ1Y3QgdWRtYWJ1Zl9jcmVhdGUpCj4gPiAKPiA+IFdo eSBkbyB5b3Ugc3RhcnQgYXQgMHg0MiBpZiB5b3UgcmVzZXJ2ZSB0aGUgMHg0MC0weDRmIHJhbmdl ID8KPiAKPiBObyBwYXJ0aWN1bGFyIHN0cm9uZyByZWFzb24sIGp1c3QgdGhhdCB1c2luZyA0MiB3 YXMgbGVzcyBib3JpbmcgdGhhbgo+IHN0YXJ0aW5nIHdpdGggMHg0MC4KPiAKPiA+PiArI2RlZmlu ZSBVRE1BQlVGX0NSRUFURV9MSVNUICBfSU9XKCd1JywgMHg0Mywgc3RydWN0Cj4gPj4gdWRtYWJ1 Zl9jcmVhdGVfbGlzdCkKPiA+IAo+ID4gV2hlcmUncyB0aGUgZG9jdW1lbnRhdGlvbiA/IDotKQo+ IAo+IElzbid0IGl0IHNpbXBsZSBlbm91Z2g/CgpObyBrZXJuZWwgVUFQSSBpcyBzaW1wbGUgZW5v dWdoIHRvIGdldCBhd2F5IHdpdGhvdXQgZG9jdW1lbnRpbmcgaXQuCgo+IEJ1dCwgd2VsbCwgeWVz LCBJIGd1ZXNzIEkgY2FuIGFkZCBzb21lIGtlcm5lbGRvYyBjb21tZW50cy4KPiAKPiA+PiArc3Rh dGljIGludCB1ZG1hYnVmX3ZtX2ZhdWx0KHN0cnVjdCB2bV9mYXVsdCAqdm1mKQo+ID4+ICt7Cj4g Pj4gKwlzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSA9IHZtZi0+dm1hOwo+ID4+ICsJc3RydWN0 IHVkbWFidWYgKnVidWYgPSB2bWEtPnZtX3ByaXZhdGVfZGF0YTsKPiA+PiArCj4gPj4gKwlpZiAo V0FSTl9PTih2bWYtPnBnb2ZmID49IHVidWYtPnBhZ2Vjb3VudCkpCj4gPj4gKwkJcmV0dXJuIFZN X0ZBVUxUX1NJR0JVUzsKPiA+IAo+ID4gSnVzdCBjdXJpb3VzLCB3aGVuIGRvIHlvdSBleHBlY3Qg dGhpcyB0byBoYXBwZW4gPwo+IAo+IEl0IHNob3VsZCBub3QuICBJZiBpdCBhY3R1YWxseSBoYXBw ZW5zIGl0IHdvdWxkIGJlIGEgYnVnIHNvbWV3aGVyZSwKPiB0aGF0cyB3aHkgdGhlIFdBUk5fT04u CgpCdXQgeW91IHNlZW0gdG8gY29uc2lkZXIgdGhhdCB0aGlzIGNvbmRpdGlvbiB0aGF0IHNob3Vs ZCBuZXZlciBoYXBwZW4gc3RpbGwgCmhhcyBhIGhpZ2ggZW5vdWdoIGNoYW5jZSBvZiBoYXBwZW5p bmcgdGhhdCBpdCdzIHdvcnRoIGEgV0FSTl9PTigpLiBJIHdhcyAKd29uZGVyaW5nIHdoeSB0aGlz IG9uZSBpbiBwYXJ0aWN1bGFyLCBhbmQgbm90IG90aGVyIGNvbmRpdGlvbnMgdGhhdCBhbHNvIGNh bid0IApoYXBwZW4gYW5kIGFyZSBub3QgY2hlY2tlZCB0aHJvdWdoIHRoZSBjb2RlLiAKCj4gPj4g KwlzdHJ1Y3QgdWRtYWJ1ZiAqdWJ1ZjsKPiA+PiAKPiA+PiArCXVidWYgPSBremFsbG9jKHNpemVv ZihzdHJ1Y3QgdWRtYWJ1ZiksIEdGUF9LRVJORUwpOwo+ID4gCj4gPiBzaXplb2YoKnVidWYpCj4g Cj4gV2h5PyAgU2hvdWxkIG5vdCBtYWtlIGEgZGlmZmVyZW5jZSAuLi4KCkJlY2F1c2UgdGhlIGRh eSB3ZSByZXBsYWNlCgoJc3RydWN0IHVkbWFidWYgKnVidWY7Cgp3aXRoCgoJc3RydWN0IHVkbWFi dWZfZXh0ICp1YnVmOwoKYW5kIGZvcmdldCB0byBjaGFuZ2UgdGhlIG5leHQgbGluZSwgd2UnbGwg aW50cm9kdWNlIGEgYnVnLiBUaGF0J3Mgd2h5IApzaXplb2YodmFyaWFibGUpIGlzIHByZWZlcnJl ZCBvdmVyIHNpemVvZih0eXBlKS4gQW5vdGhlciByZWFzb24gaXMgdGhhdCBJIGNhbiAKZWFzaWx5 IHNlZSB0aGF0CgoJdWJ1ZiA9IGt6YWxsb2Moc2l6ZW9mKCp1YnVmKSwgR0ZQX0tFUk5FTCk7Cgpp cyBjb3JyZWN0LCB3aGlsZSB1c2luZyBzaXplb2YodHlwZSkgcmVxdWlyZXMgbWUgdG8gZ28gYW5k IGxvb2sgdXAgdGhlIApkZWNsYXJhdGlvbiBvZiB0aGUgdmFyaWFibGUuCgo+ID4+ICsJCW1lbWZk ID0gZmdldChsaXN0W2ldLm1lbWZkKTsKPiA+PiArCQlpZiAoIW1lbWZkKQo+ID4+ICsJCQlnb3Rv IGVycl9wdXRfcGFnZXM7Cj4gPj4gKwkJaWYgKCFzaG1lbV9tYXBwaW5nKGZpbGVfaW5vZGUobWVt ZmQpLT5pX21hcHBpbmcpKQo+ID4+ICsJCQlnb3RvIGVycl9wdXRfcGFnZXM7Cj4gPj4gKwkJc2Vh bHMgPSBtZW1mZF9mY250bChtZW1mZCwgRl9HRVRfU0VBTFMsIDApOwo+ID4+ICsJCWlmIChzZWFs cyA9PSAtRUlOVkFMIHx8Cj4gPj4gKwkJICAgIChzZWFscyAmIFNFQUxTX1dBTlRFRCkgIT0gU0VB TFNfV0FOVEVEIHx8Cj4gPj4gKwkJICAgIChzZWFscyAmIFNFQUxTX0RFTklFRCkgIT0gMCkKPiA+ PiArCQkJZ290byBlcnJfcHV0X3BhZ2VzOwo+ID4gCj4gPiBBbGwgdGhlc2UgY29uZGl0aW9ucyB3 aWxsIHJldHVybiAtRUlOVkFMLiBJJ20gbm90IGZhbWlsaWFyIHdpdGggdGhlIG1lbWZkCj4gPiBB UEksIHNob3VsZCBzb21lIGVycm9yIGNvbmRpdGlvbnMgcmV0dXJuIGEgZGlmZmVyZW50IGVycm9y IGNvZGUgdG8gbWFrZQo+ID4gdGhlbSBkaXN0aW5ndWlzaGFibGUgYnkgdXNlcnNwYWNlID8KPiAK PiBIbW0sIEkgZ3Vlc3MgRUJBREZEIHdvdWxkIGJlIHJlYXNvbmFibGUgaW4gY2FzZSB0aGUgZmls ZSBoYW5kbGUgaXNuJ3QgYQo+IG1lbWZkLiAgT3RoZXIgc3VnZ2VzdGlvbnM/CgpJJ2xsIGxldCBv dGhlcnMgY29tbWVudCBvbiB0aGlzIGFzIEkgZG9uJ3QgZmVlbCBxdWFsaWZpZWQgdG8gcGljayBw cm9wZXIgZXJyb3IgCmNvZGVzLCBub3QgYmVpbmcgZmFtaWxpYXIgd2l0aCB0aGUgbWVtZmQgQVBJ LgoKPiBJJ2xsIHByZXBhcmUgYSBmaXh1cCBwYXRjaCBzZXJpZXMgYWRkcmVzc2luZyBtb3N0IG9m IHRoZSBvdGhlcgo+IHJldmlldyBjb21tZW50cy4KCi0tIApSZWdhcmRzLAoKTGF1cmVudCBQaW5j aGFydAoKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpk cmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0 cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK