On Tue, 19 Sep 2006, Jesper Juhl wrote:
>
> 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'm wondering if it tries to use the MMX/XMM stuff for memcpy and friends.
I'm also wondering why you'd be doing what you seem to try to be doing in
the first place ;)
Basically, "no387" doesn't seem to disable any of the fancier FPU
features, even though it obviously should. If you ask for math emulation,
you'll get emulation faults for _all_ of the modern MMX stuff too (which
we don't do).
It's entirely possible that nobody has ever tested this combination.
Linus
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