linux-kernel - Re: [PATCH v15 0/7] drm/i915/gvt: Dma-buf support for GVT-g

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Date:   Tue, 10 Oct 2017 16:06:43 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     Tina Zhang <tina.zhang@...el.com>, alex.williamson@...hat.com,
        chris@...is-wilson.co.uk, zhenyuw@...ux.intel.com,
        zhiyuan.lv@...el.com, zhi.a.wang@...el.com, kevin.tian@...el.com,
        daniel@...ll.ch, kwankhede@...dia.com
Cc:     intel-gfx@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v15 0/7] drm/i915/gvt: Dma-buf support for GVT-g

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 <kraxel@...hat.com>

cheers,
  Gerd