powerpc: Add support for CoreInt delivery of interrupts on MPIC
commitd91e4ea7047d96733d763f1626f1f21ff4298cef
authorKumar Gala <galak@kernel.crashing.org>
Wed, 7 Jan 2009 21:53:29 +0000 (7 15:53 -0600)
committerKumar Gala <galak@kernel.crashing.org>
Mon, 6 Apr 2009 14:09:14 +0000 (6 09:09 -0500)
treefa017e48c9f523ce16b59668ac1be6c75f9e3618
parente60f57f50f861f29052e0e3563ac453da53f2181
powerpc: Add support for CoreInt delivery of interrupts on MPIC

CoreInt provides a mechansim to deliver the IRQ vector directly
into the core on an interrupt (via the SPR EPR) rather than having
to go IACK on the PIC.  This is suppose to provide an improvment
in interrupt latency by reducing the time to get the IRQ vector.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
arch/powerpc/include/asm/mpic.h
arch/powerpc/sysdev/mpic.c