Nick Piggin wrote:
> Hello,
> 
> Following are patches that abstract page table operations to
> allow lockless implementations by using cmpxchg or per-pte locks.
> 

One more patch - this provides a generic framework for pte
locks, and a basic i386 reference implementation (which just
ifdefs out the cmpxchg version). Boots, runs, and has taken
some stressing.

I should have sorted this out before sending the patches for
RFC. The generic code actually did need a few lines of changes,
but not much as you can see. Needs some tidying up though, but
I only just wrote it in a few minutes.

And now before anyone gets a chance to shoot down the whole thing,
I just have to say

	"look ma, no page_table_lock!"