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Re: [PATCH v6 14/18] libxl: require qemu in dom0 for multiple stubdomain consoles

  • To: Jason Andryuk <jandryuk@xxxxxxxxx>
  • From: Ian Jackson <ian.jackson@xxxxxxxxxx>
  • Date: Mon, 18 May 2020 15:27:50 +0100
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  • Cc: Anthony Perard <anthony.perard@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
  • Delivery-date: Mon, 18 May 2020 14:27:58 +0000
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Jason Andryuk writes ("[PATCH v6 14/18] libxl: require qemu in dom0 for 
multiple stubdomain consoles"):
> From: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> Device model stubdomains (both Mini-OS + qemu-trad and linux + qemu-xen)
> are always started with at least 3 consoles: log, save, and restore.
> Until xenconsoled learns how to handle multiple consoles, this is needed
> for save/restore support.
> For Mini-OS stubdoms, this is a bug.  In practice, it works in most
> cases because there is something else that triggers qemu in dom0 too:
> vfb/vkb added if vnc/sdl/spice is enabled.
> Additionally, Linux-based stubdomain waits for all the backends to
> initialize during boot. Lack of some console backends results in
> stubdomain startup timeout.
> This is a temporary patch until xenconsoled will be improved.

Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>



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