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    SubjectRe: K6-2, Stepping 12, MTRR in 2.2.6
    On 18 Apr, Vasilios Hoffman spewed forth:
    :: look at the documentation that comes with the linux kernel
    :: (Documentation/mtrr I think), it tells you to echo a line to /proc/mtrr
    :: basically you find the start of the linear framebuffer for your graphics
    :: card (told to you when you run startx or xdm) and pass that information
    :: along with the size of your graphics memory to /proc/mtrr and tell
    :: /proc/mtrr that it's write combining (the reason for mtrr support,
    :: mainly).
    :: With an AMD you may still need Alan Cox's mtrr patch, or 2.2.6ac1 which
    :: should include the mtrr support for AMD chips. Cutting Edge says 2.2.6
    :: has support for MTRR but that may be pentium only <shrug>.
    :: For me, the command I run looks like this (millenium G200 SGRAM, 8megs):
    :: echo "base=0xe8000000 size=0x800000 type=write-combining" > /proc/mtrr
    :: and all is well :)
    :: Good luck,
    :: -V

    I try that, but it keeps telling me permission denied. I've even tried
    touch and vi, and it won't let me create the file (this is as root, of
    course). I guess I could try the ac tree, but I really prefer to stick
    with 'official' releases--it makes upgrading much easier (e.g., manual
    patch correcting is not my forte).

    Matthew Vanecek
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