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SubjectRe: [RFC] page-table walkers vs memory order
On Wed, 2012-07-25 at 15:09 -0700, Hugh Dickins wrote:
> We find out after it hits us, and someone studies the disassembly -
> if we're lucky enough to crash near the origin of the problem.

This is a rather painful way.. see

we were lucky there in that the lack of ACCESS_ONCE() caused an infinite
loop so we knew exactly where we got stuck.

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