Re: [patch]K6-2/K-III compile option

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 1 Oct 1999 20:12:36 +0100 (BST)

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> that's not what I meant. Currently (unless this changed recently), there is
> no way to have a kernel that boots both on older machines (that do not support
> fxsave / fxrestor) and on newer machines while using fxsave on newer ones.
> Not using fxsave means userspace cannot use KNI.

Doing like Fxsave/fsave fixups we can now do. I fixed a small bug in the
exception code (fixed in 2.3.18) that means you can safely take a kernel
illegal instruction and fix it up transparently

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