mtrr

[YhLu]

In the cpu/x86/mtrr/mtrr.c

#warning "FIXME I do not properly handle address more than 36 physical
address bits"
#ifdef k8
# define ADDRESS_BITS 40
#else
# define ADDRESS_BITS 36
#endif
#define ADDRESS_BITS_HIGH (ADDRESS_BITS - 32)
#define ADDRESS_MASK_HIGH ((1u << ADDRESS_BITS_HIGH) - 1)

It seems someone already remove k8 from Option.lb

Then ....

Regards

YH

-----Original Message-----
From: YhLu 
Sent: Thursday, November 11, 2004 6:00 PM
To: YhLu; ebiederman at lnxi.com; Ronald G. Minnich
Cc: linuxbios at clustermatic.org
Subject: RE: mtrr

On 2.4.22 it becomes to 
~ # cat /proc/mtrr
reg00: base=0x00000000 (   0MB), size=32768MB: write-back, count=1
reg01: base=0x80000000 (2048MB), size=16384MB: write-back, count=1
reg02: base=0xc0000000 (3072MB), size=4096MB: write-back, count=1

x 16

-----Original Message-----
From: YhLu 
Sent: Thursday, November 11, 2004 5:24 PM
To: ebiederman at lnxi.com; Ronald G. Minnich
Cc: linuxbios at clustermatic.org
Subject: mtrr

I just found the mtrr after booting is not right.

~ # cat /proc/mtrr
reg00: base=0x00000000 (   0MB), size=985088MB: write-back, count=1
reg01: base=0x80000000 (2048MB), size=984064MB: write-back, count=1
reg02: base=0xc0000000 (3072MB), size=983296MB: write-back, count=1

and it should be

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=256MB: write-back, count=1

and it is has 98340MB more = 0xf0 0000 0000.

Regards

YH
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