Re: no more MTRRs available ?

William Lee Irwin III
2003-01-29T17:13:27Z

On Wed, Jan 29, 2003 at 04:45:52PM +0100, Stephan von Krawczynski wrote:
> # cat /proc/mtrr
> reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
> reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
> reg02: base=0xc0000000 (3072MB), size= 512MB: write-back, count=1
> reg03: base=0xe0000000 (3584MB), size= 256MB: write-back, count=1
> reg04: base=0xf0000000 (3840MB), size= 128MB: write-back, count=1
> reg05: base=0xf7000000 (3952MB), size= 16MB: uncachable, count=1
> reg06: base=0x100000000 (4096MB), size=4096MB: write-back, count=1
> reg07: base=0x200000000 (8192MB), size=8192MB: write-back, count=1

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.

-- wli