>
> Are there any known issues with MTRR on early K7's?
I'm not aware of any, no. A cursory read of the current Linux MTRR code
doesn't suggest that they treat them specially either.
> Using XFree86 4.0.x
> on an early 550 Mhz K7 (equipped with 256Megs of sdram) causes this
> machine to lock up, unless I comment out the K7 mtrr enabling stuff in
> i686_mem.c. This happens with any VGA card that I drop in the box, (PCI
> bus voodoo4, a Rage IIc ATI card, and the Matrox G400).
Ack, that's not very good. 8( Is there a cleaner way of disabling it for
X? If not, we'll need to add a tweak to turn it off (or detect the CPU
and do it automatically).
If you can come up with more definite information and/or patches to DTRT
here, that'd be greatly appreciated.
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
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