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Fri Jun 26 11:22:43 CEST 2009

memory maps

Fatal server error:
xf86MapVidMem: Could not mmap framebuffer (0x95600000,0x10000000) (Invalid argument)

Maybe it's good to try to figure out what's going on here.  I found
some links[1][2].

MTRR memory type rage registers control of how accesses to memory
ranges by the CPU are cached

PAT improvement to MTRR (per page)

zni:~# 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= 256MB: write-back, count=1




[1] http://kerneltrap.org/mailarchive/linux-kernel/2008/5/5/1733824/thread
[2] http://linux.derkeiler.com/Mailing-Lists/Kernel/2008-05/msg04111.html
[3] http://cateee.net/lkddb/web-lkddb/X86_PAT.html




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