Re: [Qemu-devel] [PATCH 1.7] vl: allow "cont" from panicked state

[Eric Blake <eblake@redhat.com>]

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On 11/04/2013 06:30 AM, Paolo Bonzini wrote:
> After reporting the GUEST_PANICKED monitor event, QEMU stops the VM.
> The reason for this is that events are edge-triggered, and can be lost if
> management dies at the wrong time.  Stopping a panicked VM lets management
> know of a panic even if it has crashed; management can learn about the
> panic when it restarts and queries running QEMU processes.  The downside
> is of course that the VM will be paused while management is not running,
> but that is acceptable if it only happens with explicit "-device pvpanic".
> 
> Upon learning of a panic, management (if configured to do so) can pick a
> variety of behaviors: leave the VM paused, reset it, destroy it.  In
> addition to all of these behaviors, it is possible to dump the VM core
> from the host.
> 
...
> ---
>  gdbstub.c | 3 ---
>  vl.c      | 6 ++----
>  2 files changed, 2 insertions(+), 7 deletions(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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