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SubjectRe: StackPages errors (CALLTRACE)

> > There has also been a patch on L-K which implments CMOV on prior-PPro
> > processors. john
> It has a hideous overhead. Just dont use cmov blindly in kernels. The kernel
> stuff will take care not to let the compiler stick cmov instructions into
> a non ppro+ kernel

Not only nasty overhead but potential nasty implications. You get
exception where you'd normaly get simple instruction. Do NOT use cmov
emulation for kernel.
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