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? -- Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
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