Re: [PATCH v4 2/2] hyperv-fb: kick off efifb early

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

> > diff --git a/drivers/video/hyperv_fb.c b/drivers/video/hyperv_fb.c index
> > b7b3dd0..1b11886 100644
> > --- a/drivers/video/hyperv_fb.c
> > +++ b/drivers/video/hyperv_fb.c
> > @@ -683,6 +683,7 @@ static int hvfb_getmem(struct fb_info *info)
> >  		info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
> >  		info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
> >  	}
> > +	remove_conflicting_framebuffers(info->apertures,
> > KBUILD_MODNAME,
> > +false);
> 
> Thanks for the updates. I'm concerned about, after removing efifb, 
> if synthvid_send_config(hdev) fails, then there will be no video driver
> available.

That may happen, yes.

> Is there a way to bring the generic driver back if 
> synthvid_send_config(hdev) fails?

Not that I know of.

> If no way to recover the generic driver, please limit the early
> remove_conflicting_framebuffers() to Gen2 VM only.

I'll send updated patches once they are tested.

cheers,
  Gerd