Messages in this thread |  | | From | Mikael Pettersson <> | Date | Tue, 11 Mar 2003 13:59:21 +0100 | Subject | Re: [BK-2.5] Move "used FPU status" into new non-atomic thread_info->status field. |
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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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