Re: Status update on sparc32 genirq support

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From: Sam Ravnborg <sam@xxxxxxxxxxxx>
Date: Tue, 8 Mar 2011 07:00:39 +0100

> Added davem...
> We see strange SEGV faults in userspace and fail to read from ext2..
> All on some (but not all) sparc32 boxes.

I saw the original report.

But reverting this commit is the wrong thing to do from what I can
tell.

Either we have:

1) A compiler code gen bug.

2) Some piece of code which is sparc32 specific is invoking memset
   or memcpy in a way which makes assumptions which are in fact not
   valid

3) The code change is merely making cache offsets change, masking the
   true problem

Especially in cases #2 and #3 we're just hiding a heisen-bug and
not fixing the real problem.
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