vfio: add vgpu edid support?

[Zhenyu Wang]

On 2018.09.12 07:09:59 +0200, Gerd Hoffmann wrote:
> On Wed, Sep 12, 2018 at 11:53:16AM +0800, Zhenyu Wang wrote:
> > On 2018.09.11 13:20:08 +0200, Gerd Hoffmann wrote:
> > > > Besides, I think the proposed "VFIO_DEVICE_GFX_EDID_SET" can also provide
> > > > host a capability to trigger display monitor hot-plug event to guest, when host
> > > > wants to temporarily turn off vfio/display.
> > > 
> > > That makes sense indeed.
> > > 
> > 
> > For virtual display, I don't think doing DPMS off alike operation has
> > practical usage, as host can control how/whether to show vgpu display.
> > vgpu guest can apply display off on virtual display, which host can
> > handle through vfio gfx plane ioctl.
> 
> It is not DPMS.
> It also is not display control.
>

I see, if it doesn't mean display control, that's fine to me.

> It is about emulating link status, to give the guest hints how to
> configure the display.  Setting display_status to "disconnected" would
> be the same as the user powering off the monitor in the physical world.
> 

hmm, just doubt what kind of EDID can give that hint?

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Open Source Technology Center, Intel ltd.

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