[PATCH] kdump: clear and EOI IPI for kexec CPU

[Haren Myneni]

Paul, Sorry, Please ignore the previous patch since it has one tab/space 
issue. Tested this one and kdump-dma-fault-fix.patch on P5, P4 
(non-lpar), JS21 and JS20.

Thanks
Haren

Some times, the kexec CPU is not reponding to an IPI during kdump boot. 
It is causing the system in xmon. Noticed on power-4 (non-lpar). This 
patch clears and EOI IPI for kexec CPU as well before the kdump boot 
started.

Signed-off-by: Haren Myneni <haren at us.ibm.com>

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