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

[Paul Mackerras]

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.