/proc/mtrr

reg00: base=0x0fffe0000 ( 4095MB), size=  128KB, count=1: write-protect
reg01: base=0x0fffc0000 ( 4095MB), size=  128KB, count=1: uncachable
reg02: base=0x000000000 (    0MB), size= 1024MB, count=1: write-back
reg03: base=0x040000000 ( 1024MB), size=  512MB, count=1: write-back
reg04: base=0x05f800000 ( 1528MB), size=    8MB, count=1: uncachable
reg05: base=0x05f600000 ( 1526MB), size=    2MB, count=1: uncachable
reg06: base=0x05f500000 ( 1525MB), size=    1MB, count=1: uncachable
reg07: base=0x000000000 (    0MB), size=  128KB, count=1: uncachable