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sparc32,leon: Implemented SMP IPIs for LEON CPU
authorDaniel Hellstrom <daniel@gaisler.com>
Mon, 2 May 2011 00:08:52 +0000 (00:08 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 16 May 2011 20:07:43 +0000 (13:07 -0700)
This patch implements SMP IPIs on LEON using software generated
IRQs to signal between CPUs.

The IPI IRQ number is set by using the ipi_num property in the
device tree, or defaults to 13. LEON SMP systems should reserve
IRQ 13 (and IRQ 15) to Linux in order for the defaults to work.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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