mtrr setup?

Tim Wunder tim
Mon May 17 11:43:02 PDT 2004


On Tuesday 07 January 2003 8:43 pm, someone claiming to be David A. Bandel 
wrote:
> On Mon, 6 Jan 2003 10:56:37 -0500
<snip>
>
> reg00: base=0x00000000 (   0MB), size= 256MB: write-back, count=1
> reg01: base=0xe4000000 (3648MB), size=  64MB: write-combining, count=1
> reg02: base=0xdc000000 (3520MB), size=   4MB: write-combining, count=1
>
> IIRC, you can only have one write-back entry, the rest will be
> write-combining.  
<snip>

Perhaps only one write-back per type of RAM module? I have two sticks of RAM, 
a 512MB and a 256MB and I get
$ cat /proc/mtrr
reg00: base=0x00000000 (   0MB), size= 512MB: write-back, count=1
reg01: base=0x20000000 ( 512MB), size= 256MB: write-back, count=1
reg02: base=0xe4000000 (3648MB), size=  32MB: write-combining, count=1
reg05: base=0xe0000000 (3584MB), size=  64MB: write-combining, count=2

reg02 is my video card. Dunno what reg05 is. I've only got 1 video card 
installed. I have a SCSI card for one of my CD-RW's, a sound card and a NIC.

Regards, 
Tim

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