From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oleksandr Andrushchenko Subject: Re: [Xen-devel] [PATCH v2 5/9] xen/gntdev: Allow mappings for DMA buffers Date: Mon, 11 Jun 2018 16:13:13 +0300 Message-ID: <06eff3fe-3ffc-47f6-6bd6-d8f2f823b382@gmail.com> References: <20180601114132.22596-1-andr2000@gmail.com> <20180601114132.22596-6-andr2000@gmail.com> <64facf05-0a51-c3d9-9d3b-780893248628@oracle.com> <84217eac-b83b-710f-39ab-c93cad65bf9a@gmail.com> <30fa03c0-1b75-c0b1-b14f-8b52ea584e20@gmail.com> <78dc2fc4-cdac-05b7-2c34-22b69e7e009c@oracle.com> <4be24882-185d-01e3-6aa1-751e341433c7@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail-lf0-x243.google.com (mail-lf0-x243.google.com [IPv6:2a00:1450:4010:c07::243]) by gabe.freedesktop.org (Postfix) with ESMTPS id EDC5F6E327 for ; Mon, 11 Jun 2018 13:13:17 +0000 (UTC) Received: by mail-lf0-x243.google.com with SMTP id t134-v6so30479451lff.6 for ; Mon, 11 Jun 2018 06:13:17 -0700 (PDT) In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Boris Ostrovsky , Stefano Stabellini , "Oleksandr_Andrushchenko@epam.com" Cc: jgross@suse.com, dongwon.kim@intel.com, konrad.wilk@oracle.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, julien.grall@arm.com, daniel.vetter@intel.com, xen-devel@lists.xenproject.org, linux-media@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org T24gMDYvMDgvMjAxOCAxMDoyMSBQTSwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+IE9uIDA2LzA4 LzIwMTggMDE6NTkgUE0sIFN0ZWZhbm8gU3RhYmVsbGluaSB3cm90ZToKPj4+Pj4+Pj4+ICAgwqDC oCBAQCAtMzI1LDYgKzQwMSwxNCBAQCBzdGF0aWMgaW50IG1hcF9ncmFudF9wYWdlcyhzdHJ1Y3QK Pj4+Pj4+Pj4+IGdyYW50X21hcAo+Pj4+Pj4+Pj4gKm1hcCkKPj4+Pj4+Pj4+ICAgwqDCoMKgwqDC oMKgwqDCoMKgwqAgbWFwLT51bm1hcF9vcHNbaV0uaGFuZGxlID0gbWFwLT5tYXBfb3BzW2ldLmhh bmRsZTsKPj4+Pj4+Pj4+ICAgwqDCoMKgwqDCoMKgwqDCoMKgwqAgaWYgKHVzZV9wdGVtb2QpCj4+ Pj4+Pj4+PiAgIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgbWFwLT5rdW5tYXBfb3BzW2ld LmhhbmRsZSA9Cj4+Pj4+Pj4+PiBtYXAtPmttYXBfb3BzW2ldLmhhbmRsZTsKPj4+Pj4+Pj4+ICsj aWZkZWYgQ09ORklHX1hFTl9HUkFOVF9ETUFfQUxMT0MKPj4+Pj4+Pj4+ICvCoMKgwqDCoMKgwqDC oCBlbHNlIGlmIChtYXAtPmRtYV92YWRkcikgewo+Pj4+Pj4+Pj4gK8KgwqDCoMKgwqDCoMKgwqDC oMKgwqAgdW5zaWduZWQgbG9uZyBtZm47Cj4+Pj4+Pj4+PiArCj4+Pj4+Pj4+PiArwqDCoMKgwqDC oMKgwqDCoMKgwqDCoCBtZm4gPSBfX3Bmbl90b19tZm4ocGFnZV90b19wZm4obWFwLT5wYWdlc1tp XSkpOwo+Pj4+Pj4+PiBOb3QgcGZuX3RvX21mbigpPwo+Pj4+Pj4+IEknZCBsb3ZlIHRvLCBidXQg cGZuX3RvX21mbiBpcyBvbmx5IGRlZmluZWQgZm9yIHg4Niwgbm90IEFSTTogWzFdCj4+Pj4+Pj4g YW5kIFsyXQo+Pj4+Pj4+IFRodXMsCj4+Pj4+Pj4KPj4+Pj4+PiBkcml2ZXJzL3hlbi9nbnRkZXYu Yzo0MDg6MTA6IGVycm9yOiBpbXBsaWNpdCBkZWNsYXJhdGlvbiBvZiBmdW5jdGlvbgo+Pj4+Pj4+ IOKAmHBmbl90b19tZm7igJkgWy1XZXJyb3I9aW1wbGljaXQtZnVuY3Rpb24tZGVjbGFyYXRpb25d Cj4+Pj4+Pj4gICDCoMKgwqDCoCBtZm4gPSBwZm5fdG9fbWZuKHBhZ2VfdG9fcGZuKG1hcC0+cGFn ZXNbaV0pKTsKPj4+Pj4+Pgo+Pj4+Pj4+IFNvLCBJJ2xsIGtlZXAgX19wZm5fdG9fbWZuCj4+Pj4+ PiBIb3cgd2lsbCB0aGlzIHdvcmsgb24gbm9uLVBWIHg4Nj8KPj4+Pj4gU28sIHlvdSBtZWFuIEkg bmVlZDoKPj4+Pj4gI2lmZGVmIENPTkZJR19YODYKPj4+Pj4gbWZuID0gcGZuX3RvX21mbihwYWdl X3RvX3BmbihtYXAtPnBhZ2VzW2ldKSk7Cj4+Pj4+ICNlbHNlCj4+Pj4+IG1mbiA9IF9fcGZuX3Rv X21mbihwYWdlX3RvX3BmbihtYXAtPnBhZ2VzW2ldKSk7Cj4+Pj4+ICNlbmRpZgo+Pj4+Pgo+Pj4+ IEknZCByYXRoZXIgZml4IGl0IGluIEFSTSBjb2RlLiBTdGVmYW5vLCB3aHkgZG9lcyBBUk0gdXNl cyB0aGUKPj4+PiB1bmRlcnNjb3JlZCB2ZXJzaW9uPwo+Pj4gRG8geW91IHdhbnQgbWUgdG8gYWRk IG9uZSBtb3JlIHBhdGNoIGZvciBBUk0gdG8gd3JhcCBfX3Bmbl90b19tZm4KPj4+IHdpdGggc3Rh dGljIGlubGluZSBmb3IgQVJNPyBlLmcuCj4+PiBzdGF0aWMgaW5saW5lIC4uLnBmbl90b19tZm4o Li4uKQo+Pj4gewo+Pj4gIMKgwqDCoCBfX3Bmbl90b19tZm4oKTsKPj4+IH0KPj4gQSBYZW4gb24g QVJNIGd1ZXN0IGRvZXNuJ3QgYWN0dWFsbHkga25vdyB0aGUgbWZucyBiZWhpbmQgaXRzIG93bgo+ PiBwc2V1ZG8tcGh5c2ljYWwgcGFnZXMuIFRoaXMgaXMgd2h5IHdlIHN0b3BwZWQgdXNpbmcgcGZu X3RvX21mbiBhbmQKPj4gc3RhcnRlZCB1c2luZyBwZm5fdG9fYmZuIGluc3RlYWQsIHdoaWNoIHdp bGwgZ2VuZXJhbGx5IHJldHVybiAicGZuIiwKPj4gdW5sZXNzIHRoZSBwYWdlIGlzIGEgZm9yZWln biBncmFudC4gU2VlIGluY2x1ZGUveGVuL2FybS9wYWdlLmguCj4+IHBmbl90b19iZm4gd2FzIGFs c28gaW50cm9kdWNlZCBvbiB4ODYuIEZvciBleGFtcGxlLCBzZWUgdGhlIHVzYWdlIG9mCj4+IHBm bl90b19iZm4gaW4gZHJpdmVycy94ZW4vc3dpb3RsYi14ZW4uYy4gT3RoZXJ3aXNlLCBpZiB5b3Ug ZG9uJ3QgY2FyZQo+PiBhYm91dCBvdGhlciBtYXBwZWQgZ3JhbnRzLCB5b3UgY2FuIGp1c3QgdXNl IHBmbl90b19nZm4sIHRoYXQgYWx3YXlzCj4+IHJldHVybnMgcGZuLgo+Cj4gSSB0aGluayB0aGVu IHRoaXMgY29kZSBuZWVkcyB0byB1c2UgcGZuX3RvX2JmbigpLgpPawo+Cj4KPj4gQWxzbywgZm9y IHlvdXIgaW5mb3JtYXRpb24sIHdlIHN1cHBvcnQgZGlmZmVyZW50IHBhZ2UgZ3JhbnVsYXJpdGll cyBpbgo+PiBMaW51eCBhcyBhIFhlbiBndWVzdCwgc2VlIHRoZSBjb21tZW50IGF0IGluY2x1ZGUv eGVuL2FybS9wYWdlLmg6Cj4+Cj4+ICAgIC8qCj4+ICAgICAqIFRoZSBwc2V1ZG8tcGh5c2ljYWwg ZnJhbWUgKHBmbikgdXNlZCBpbiBhbGwgdGhlIGhlbHBlcnMgaXMgYWx3YXlzIGJhc2VkCj4+ICAg ICAqIG9uIFhlbiBwYWdlIGdyYW51bGFyaXR5IChpLmUgNEtCKS4KPj4gICAgICoKPj4gICAgICog QSBMaW51eCBwYWdlIG1heSBiZSBzcGxpdCBhY3Jvc3MgbXVsdGlwbGUgbm9uLWNvbnRpZ3VvdXMg WGVuIHBhZ2Ugc28gd2UKPj4gICAgICogaGF2ZSB0byBrZWVwIHRyYWNrIHdpdGggZnJhbWUgYmFz ZWQgb24gNEtCIHBhZ2UgZ3JhbnVsYXJpdHkuCj4+ICAgICAqCj4+ICAgICAqIFBWIGRyaXZlcnMg c2hvdWxkIG5ldmVyIG1ha2UgYSBkaXJlY3QgdXNhZ2Ugb2YgdGhvc2UgaGVscGVycyAocGFydGlj dWxhcmx5Cj4+ICAgICAqIHBmbl90b19nZm4gYW5kIGdmbl90b19wZm4pLgo+PiAgICAgKi8KPj4K Pj4gQSBMaW51eCBwYWdlIGNvdWxkIGJlIDY0SywgYnV0IGEgWGVuIHBhZ2UgaXMgYWx3YXlzIDRL LiBBIGdyYW50ZWQgcGFnZQo+PiBpcyBhbHNvIDRLLiBXZSBoYXZlIGhlbHBlcnMgdG8gdGFrZSBp bnRvIGFjY291bnQgdGhlIG9mZnNldHMgdG8gbWFwCj4+IG11bHRpcGxlIFhlbiBncmFudHMgaW4g YSBzaW5nbGUgTGludXggcGFnZSwgc2VlIGZvciBleGFtcGxlCj4+IGRyaXZlcnMveGVuL2dyYW50 LXRhYmxlLmM6Z250dGFiX2ZvcmVhY2hfZ3JhbnQuIE1vc3QgUFYgZHJpdmVycyBoYXZlCj4+IGJl ZW4gY29udmVydGVkIHRvIGJlIGFibGUgdG8gd29yayB3aXRoIDY0SyBwYWdlcyBjb3JyZWN0bHks IGJ1dCBpZiBJCj4+IHJlbWVtYmVyIGNvcnJlY3RseSBnbnRkZXYuYyBpcyB0aGUgb25seSByZW1h aW5pbmcgZHJpdmVyIHRoYXQgZG9lc24ndAo+PiBzdXBwb3J0IDY0SyBwYWdlcyB5ZXQsIHNvIHlv dSBkb24ndCBoYXZlIHRvIGRlYWwgd2l0aCBpdCBpZiB5b3UgZG9uJ3QKPj4gd2FudCB0by4KPgo+ IEkgYmVsaWV2ZSBzb21ld2hlcmUgaW4gdGhpcyBzZXJpZXMgdGhlcmUgaXMgYSB0ZXN0IGZvciBQ QUdFX1NJWkUgdnMuCj4gWEVOX1BBR0VfU0laRS4gUmlnaHQsIE9sZWtzYW5kcj8KTm90IGluIGdu dGRldi4gWW91IG1pZ2h0IGhhdmUgc2VlbiB0aGlzIGluIHhlbi1kcm1mcm9udC94ZW4tc25kZnJv bnQsCmJ1dCBJIGRpZG4ndCB0b3VjaCBnbnRkZXYgZm9yIHRoYXQuIERvIHlvdSB3YW50IG1lIHRv IGFkZCB5ZXQgYW5vdGhlciBwYXRjaAppbiB0aGUgc2VyaWVzIHRvIGNoZWNrIGZvciB0aGF0Pwo+ IFRoYW5rcyBmb3IgdGhlIGV4cGxhbmF0aW9uLgo+Cj4gLWJvcmlzClRoYW5rIHlvdSwKT2xla3Nh bmRyCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1k ZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczov L2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=