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    SubjectRe: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout v2
    On Mon, 28 Apr 2008 17:28:21 +0200
    Mika Fischer <mika.fischer@zoopnet.de> wrote:

    > Arjan van de Ven schrieb:
    > > yep one should not touch existing MTRRs. If you run out, tough luck.
    > > Thats what we have PAT for.
    > > Changing them anyway is a deathtrap with various things,
    > > suspend/resume being only one of the nasty cases.
    >
    > Hm. I currently have to remove the offending (i.e. overlapping my
    > video memory) MTRRs and split them so that they have a hole where my
    > video memory is.

    I'm not arguing that it sometimes works. It's just a big trap to default enable ;(


    >
    > Ah, so the new X will be able to use the video memory in
    > write-combining mode even if I have an MTRR saying this area is
    > uncachable or write-back?

    yes.
    When it gets released...


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