Linus Torvalds wrote:
(Actually, I think one special case of non-temporal instruction is the
"repeat movs/stos" thing: I think you should _not_ use a "repeat stos" to
unlock a spinlock, exactly because those stores are not ordered wrt each
other, and they can bypass the write queue. Of course, doing that would
be insane anyway, so no harm done ;^).
oops - there goes the "unlock an array of spinlocks
in a single instruction" idea. :-)
Helge Hafting
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