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SubjectRe: [RFC] atomic pte updates and pae changes, take 2
   Date: 	Fri, 13 Oct 2000 18:43:47 -0700 (PDT)
From: Linus Torvalds <torvalds@transmeta.com>

I dislike the "__HAVE_ARCH_xxx" approach, and considering that most
architectures will probably want to do something specific anyway I
wonder if we should get rid of that and just make architectures
have their own code.

Most software-based TLB refill systems could (and sparc64 will) make
all ref/mod bit updates occur in the kernel software fault path so
that none of this special synchronization is necessary.

In such cases it might be nice to have a generic version that all such
ports can share by just not defining __HAVE_ARCH_xxx.

Sure it's a bit ugly, but it does allow code sharing, so it probably
at least deserves a chance :-)

Later,
David S. Miller
davem@redhat.com
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