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Re: discuss about pvpanic

From: Paolo Bonzini
Subject: Re: discuss about pvpanic
Date: Wed, 8 Jan 2020 11:05:02 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1

On 08/01/20 10:58, Michal Privoznik wrote:
>> the kernel-side patch certainly makes sense.  I assume that you want the
>> event to propagate up from QEMU to Libvirt and so on?  The QEMU patch
>> would need to declare a new event (qapi/misc.json) and send it in
>> handle_event (hw/misc/pvpanic.c).  For Libvirt I'm not familiar, so I'm
>> adding the respective list.
> Adding an event is fairly easy, if everything you want libvirt to do is
> report the event to upper layers. I volunteer to do it. Question is, how
> qemu is going to report this, whether some attributes to GUEST_PANICKED
> event or some new event.

I think it should be a new event, using GUEST_PANICKED could cause upper
layers to react by shutting down or rebooting the guest.



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