tree 251fb4b23142e8dc05a5824359ba73e383b0434d
parent a486bdb0e9da8d876d6ff4efc3138d35e141c0b5
author Gavin Shan <shangw@linux.vnet.ibm.com> 1366917659 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1366956599 +1000

powerpc/powernv: Patch MSI EOI handler on P8

The EOI handler of MSI/MSI-X interrupts for P8 (PHB3) need additional
steps to handle the P/Q bits in IVE before EOIing the corresponding
interrupt. The patch changes the EOI handler to cover that. we have
individual IRQ chip in each PHB instance. During the MSI IRQ setup
time, the IRQ chip is copied over from the original one for that IRQ,
and the EOI handler is patched with the one that will handle the P/Q
bits (As Ben suggested).

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>