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SubjectRe: RFC: unlazy fpu for frequent fpu users
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 > +	/* prefetch the fxsave area into the cache */
> + prefetch(&next->i387.fxsave);

This chunk is not obviously related to the rest of the patch, and
perhaps needs additional justification.

And the comment getting pretty close to

/* set i to 2 */
i = 2;

territory ;)

- R.
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