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SubjectRe: [BK-2.5] Move "used FPU status" into new non-atomic thread_info->status field.
Linus Torvalds writes:
> > Sorry for being dense, but can you clarify: will current 2.{2,4,5}
> > kernels preserve or destroy the parent process' FPU control at fork()?
> They're guaranteed to preserve the control state (it has to: you can't
> just change the exception mask over a function call). However, that was
> buggy at least in 2.5.x, and very possibly in 2.4.x too - haven't checked.

Thanks. Our use of unmasked FPU exceptions should be safe then, unless
2.4 also has the bug you fixed in 2.5.

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