Re: [PATCH v2 3/3] console: make QMP/HMP screendump run in coroutine

[Gerd Hoffmann <kraxel@redhat.com>]

On Tue, Oct 27, 2020 at 05:36:02PM +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> Thanks to the monitors' coroutine support (merge commit b7092cda1b3),
> the screendump handler can trigger a graphic_hw_update(), yield and let
> the main loop run until update is done. Then the handler is resumed, and
> ppm_save() will write the screen image to disk in the coroutine context.
> 
> The IO is still blocking though, as the file is set blocking so far,
> this could be addressed by some future change (with other caveats).
> 
> Related to:
> https://bugzilla.redhat.com/show_bug.cgi?id=1230527
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>

Hmm, just noticed that with this patch applied screendump hangs for vms
with "-device qxl" ("-device qxl-vga" works fine).

Can you have a look?

thanks,
  Gerd