On Fri, 20 Jul 2012 08:50:57 +0900
Minchan Kim [off-list ref] wrote:

quoted

But, really, given how the structure is used, I think we're better off
just making sure all archs clear them and maybe have a sanity check or
two just in case.  It's not like breakage on that front is gonna be
subtle.

Of course, it seems all archs seems to zero-out already as I mentioned
(Not sure, MIPS) but Andrew doesn't want it. Andrew?

My point is that having to ensure that each arch zeroes out this
structure is difficult/costly/unreliable/fragile.  It would be better
if we can reliably clear it at some well-known place in core MM.

That might mean that the memory gets cleared twice on some
architectures, but I doubt if that matters - it's a once-off thing.

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