From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Hoffmann Subject: Re: [PATCH v15 0/7] drm/i915/gvt: Dma-buf support for GVT-g Date: Tue, 10 Oct 2017 16:06:43 +0200 Message-ID: <1507644403.27800.9.camel@redhat.com> References: <1507629007-3183-1-git-send-email-tina.zhang@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1507629007-3183-1-git-send-email-tina.zhang@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Tina Zhang , alex.williamson@redhat.com, chris@chris-wilson.co.uk, zhenyuw@linux.intel.com, zhiyuan.lv@intel.com, zhi.a.wang@intel.com, kevin.tian@intel.com, daniel@ffwll.ch, kwankhede@nvidia.com Cc: intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, linux-kernel@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org T24gVHVlLCAyMDE3LTEwLTEwIGF0IDE3OjUwICswODAwLCBUaW5hIFpoYW5nIHdyb3RlOgo+IFRo aXMgcGF0Y2ggc2V0IGFkZHMgdGhlIGRtYS1idWYgc3VwcG9ydCBmb3IgaW50ZWwgR1ZULWcuCj4g Cj4gZG1hLWJ1ZiBpcyBhbiB1bmlmb3JtIG1lY2hhbmlzbSB0byBzaGFyZSBETUEgYnVmZmVycyBh Y3Jvc3MgZGlmZmVyZW50Cj4gZGV2aWNlcyBhbmQgc3Vic3lzdGVtcy4gZG1hLWJ1ZiBmb3IgaW50 ZWwgR1ZULWcgaXMgbWFpbmx5IHVzZWQgdG8KPiBzaGFyZQo+IHRoZSB2Z3B1J3MgZnJhbWVidWZm ZXIgdG8gdXNlcnNwYWNlIHRvIGxldmVyYWdlIHVzZXJzcGFjZSBncmFwaGljcwo+IHN0YWNrcwo+ IHRvIHJlbmRlciB0aGUgZnJhbWVidWZmZXIgdG8gdGhlIGRpc3BsYXkgbW9uaXRvci4KPiAKPiBU aGUgbWFpbiBpZGVhIGlzIHRoYXQgd2UgY3JlYXRlIGEgZ2VtIG9iamVjdCBhbmQgc2V0IHZncHUn cwo+IGZyYW1lYnVmZmVyIGFzCj4gaXRzIGJhY2tpbmcgc3RvcmFnZS4gVGhlbiwgZXhwb3J0IGEg ZG1hLWJ1ZiBhc3NvY2lhdGVkIHdpdGggdGhpcyBnZW0KPiBvYmplY3QuCj4gV2l0aCB0aGUgZmQg b2YgdGhpcyBkbWEtYnVmLCB1c2Vyc3BhY2UgY2FuIGRpcmVjdGx5IGhhbmRsZSB0aGlzCj4gYnVm ZmVyLgoKVGVzdGVkLWJ5OiBHZXJkIEhvZmZtYW5uIDxrcmF4ZWxAcmVkaGF0LmNvbT4KCmNoZWVy cywKICBHZXJkCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcK aHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756421AbdJJOGr (ORCPT ); Tue, 10 Oct 2017 10:06:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51736 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756393AbdJJOGq (ORCPT ); Tue, 10 Oct 2017 10:06:46 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 10815B5A6 Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=kraxel@redhat.com Message-ID: <1507644403.27800.9.camel@redhat.com> Subject: Re: [PATCH v15 0/7] drm/i915/gvt: Dma-buf support for GVT-g From: Gerd Hoffmann To: Tina Zhang , alex.williamson@redhat.com, chris@chris-wilson.co.uk, zhenyuw@linux.intel.com, zhiyuan.lv@intel.com, zhi.a.wang@intel.com, kevin.tian@intel.com, daniel@ffwll.ch, kwankhede@nvidia.com Cc: intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, linux-kernel@vger.kernel.org Date: Tue, 10 Oct 2017 16:06:43 +0200 In-Reply-To: <1507629007-3183-1-git-send-email-tina.zhang@intel.com> References: <1507629007-3183-1-git-send-email-tina.zhang@intel.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Tue, 10 Oct 2017 14:06:46 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2017-10-10 at 17:50 +0800, Tina Zhang wrote: > This patch set adds the dma-buf support for intel GVT-g. > > dma-buf is an uniform mechanism to share DMA buffers across different > devices and subsystems. dma-buf for intel GVT-g is mainly used to > share > the vgpu's framebuffer to userspace to leverage userspace graphics > stacks > to render the framebuffer to the display monitor. > > The main idea is that we create a gem object and set vgpu's > framebuffer as > its backing storage. Then, export a dma-buf associated with this gem > object. > With the fd of this dma-buf, userspace can directly handle this > buffer. Tested-by: Gerd Hoffmann cheers, Gerd