Handling of alignment exceptions of load/store multiples

[Becky Bruce]

Paul & company,

I'm currently in the process of merging align.c into 
arch/powerpc/kernel.  I noticed that there's a difference in the 
handling of alignment exceptions involving ld/st string instructions 
and ld/st multiple instructions between the 2 architectures right now.  
The 32-bit code does some handling of these, while the 64-bit version 
currently just bails out.

Should I try to adopt a handling model for these in the merged tree 
like the 32-bit code, or is there a reason behind not attempting to 
handle these on the 64-bit side that I'm not aware of?

Cheers!
-B