Re: [Qemu-devel] [PATCH] vl: allow "cont" from panicked state

[Paolo Bonzini <pbonzini@redhat.com>]

Il 21/08/2013 16:30, Michael S. Tsirkin ha scritto:
>> I think the same reasoning went behind the PANICKED state, and for most
>> cases it's going to be disastrous to put the guest to run again,
> 
> Why will it? It will most likely just call halt a bit later.

I agree.

>> but I can understand that this is up user/mngt to decide this, not QEMU.
> 
> I don't have a problem with this patch as such, so
> 
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
> 
> though I'm still not really sure why do we
> want to block guest immediately on panic.
> Why not let it call halt a bit later?

To make sure the panic is detected, and action taken, in the host even
if management has crashed at the time.  For example, even if you have
reboot-on-panic active, management has time to take a core dump of the
paused guest _before_ the reboot.

Paolo