xen/events/fifo: Consume unprocessed events when a CPU dies

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commit 3de88d622f upstream.

When a CPU is offlined, there may be unprocessed events on a port for
that CPU.  If the port is subsequently reused on a different CPU, it
could be in an unexpected state with the link bit set, resulting in
interrupts being missed. Fix this by consuming any unprocessed events
for a particular CPU when that CPU dies.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Ross Lagerwall 2015-06-19 16:15:57 +01:00 • committed by Luis Henriques

parent 50affdc411

commit dff790f93c

1 changed files with 18 additions and 5 deletions

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drivers/xen/events/events_fifo.c

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