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Re: Default value of x87 registers' reserved bits

Thor Lancelot Simon <> wrote:

> Oh, that's not _especially_ nasty.  _Especially_ nasty is having the bits
> always read the same way but have persistent effect on write.

"Ouch."  /me has been away from device drivers long enough to
forget that sort of thing, and not long enough to want to go

It's another reason for doing it how the book says and not trying
to optimise it especially.


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