Re: no more MTRRs available ?

Dave Jones
2003-01-29T17:43:18Z

On Wed, Jan 29, 2003 at 09:20:01AM -0800, William Lee Irwin III wrote:

> Looks better than what I'm getting on 2.5.59:
>
> curly:~# cat /proc/mtrr
> reg00: base=0xc0000000 (49152MB), size=16384MB: uncachable, count=1
> reg01: base=0x00000000 ( 0MB), size=524288MB: write-back, count=1
> reg02: base=0x800000000 (524288MB), size=262144MB: write-back, count=1
> Yes, this is standard ia32 (P-III/Coppermine cpus), and hence the
> numbers here are utter garbage.

Bizarre. The size field isn't being shifted, and your base is somewhere
off in 64bit land.
See Andi's "RED-PEN" comments in various parts of arch/i386/kernel/cpu/mtrr/
They need fixing at some point, and could be the cause of your problems.

Dave

--
| Dave Jones. http://www.codemonkey.org.uk
| SuSE Labs