xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports

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During a kexec boot some virqs such as timer and debugirq were already
registered by the old kernel.  The hypervisor will return -EEXISTS from
the new EVTCHNOP_bind_virq request and the BUG in bind_virq_to_irq()
triggers.  Catch the -EEXISTS error and loop through all possible ports to find
what port belongs to the virq/cpu combo.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
[v2:
  - use NR_EVENT_CHANNELS instead of private MAX_EVTCHNS]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

...

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Olaf Hering 2011-08-25 18:30:48 +02:00 • committed by Konrad Rzeszutek Wilk

parent c4c303c7c5

commit 62cc5fc7b2

1 changed files with 32 additions and 5 deletions

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drivers/xen/events.c

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