Bug#353494: (no subject)

[Lee Cremeans <lee@lcremeans.homeip.net>]

I did some more checking, and I can reproduce the bug running 
kernel-image-2.4.27-586tsc on the same machine. I also cross-checked 
with another OS (FreeBSD 6.1-RELEASE) to see if this is an upstream 
problem, and X.org crashed in the same place (while drawing the default 
stipple) with a SIGSEGV; this may be due to differences in how FreeBSD 
handle illegal instructions in user mode. In any case, it would seem 
CPUID is unusable from user mode on the Cyrix chips, and the 
Cx486/586/6x86 don't have MMX, so the fix would be to make fbHaveMMX 
check for a Cyrix processor before trying to use CPUID. I'll look at the 
X.org code again and see what I can do.

-lee