umccullough@c2xubu:~$ uname -a
Linux c2xubu 2.6.24-18-generic #1 SMP Wed May 28 20:27:26 UTC 2008 i686 GNU/Linux
umccullough@c2xubu:~$ cat /proc/mtrr
reg00: base=0xb0000000 (2816MB), size= 256MB: uncachable, count=1
reg01: base=0xc0000000 (3072MB), size=1024MB: uncachable, count=1
reg02: base=0x00000000 (   0MB), size=4096MB: write-back, count=1
reg03: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
reg04: base=0x140000000 (5120MB), size= 256MB: write-back, count=1
reg05: base=0xaf700000 (2807MB), size=   1MB: uncachable, count=1
reg06: base=0xaf800000 (2808MB), size=   8MB: uncachable, count=1