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SubjectRe: Math-emu kills the kernel on Athlon64 X2
On 19/09/06, Sergio Monteiro Basto <> wrote:
> On Tue, 2006-09-19 at 00:18 +0200, Jesper Juhl wrote:
> > Hi,
> >
> > If I enable the math emulator in 2.6.18-rc7-git2 (only version I've
> > tried this with) and then boot the kernel with "no387" then I only get
> > as far as lilo's "...Booting the kernel." message and then the system
> > hangs.
> >
> I think, math emulation is for 486 and older. 486 DX2 was the first one
> who have math co processor, on earlier processor it should be disable .
Yes, it's mainly there for CPU's that don't have a math co-processor,
but it's also there for the cases where the math co-processor is
broken or where for some other reason you may not want to use it - so
it really should work... Sure, it may be slow as hell compared to
hardware, but if it's there and I can select it then it should at
least be functional.

Jesper Juhl <>
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