Re: [Xen-devel] [PATCH] shut down domain when last vCPU goes down

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Fri, Feb 16, 2018 at 08:10:48AM -0700, Jan Beulich wrote:
> I've just had to deal with an early boot crash of Linux which occurred
> so early that even "earlyprintk=xen" did not produce any useful output.
> Hence the domain appeared to hang, while in fact it had brought down its
> only vCPU. By translating this to a shutdown, the situation will be
> better recognizable.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

I'm wondering, is it common for a domain to shutdown by shutting down
all it's vCPUs?

In the scenario that you describe above it seems it would be more
helpful to issue a SHUTDOWN_crash instead maybe with a gdprintk
message in order to aid debugging.

Roger.

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