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

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@us.ibm.com>

Haren Myneni writes:

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.

Sorry, that commit message is quite opaque to me.  Could you explain
in more detail what the problem is and how this fixes it?

Thanks,
Paul.