Re: [Xen-devel] [PATCH 2/6] xen/hvm kexec: unregister shutdown+sysrq watches during reboot

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 28/07/2011 11:52, "Ian Campbell" <Ian.Campbell@xxxxxxxxxx> wrote:

>>  And what about the event/irq handling? There is currently no way
>> to check what virq is bound to what port, other than looping through all
>> possible ports and see if one matches the requested virq.
> 
> There is EVTCHNOP_reset but I'm not sure if it does too much. For
> example I'm not sure how the guest could recover event channels which
> are setup by the domain builder -- such as the xenstore event channel.

EVTCHNOP_reset is currently only called from the toolstack, which is then
able to re-setup things like the xenstore event channel for the guest.

 -- Keir



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