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    SubjectRe: I'm having 4GB RAM, but Linux sees just 3GB???
    Christian Parpart wrote:
    > Has anyone a hint for my WHY this is happening and HOW I could get rid of it?

    This is because there is a PCI memory hole of about 1GB of space on the
    x86_64 platform. Basically it overlays the address space of the RAM that
    you have.

    You can try to enable memory hoisting (it may be called software memory
    hole in your bios). This will try to remap you RAM above the 4GB
    boundary so that the PCI space and your RAMs address space do not
    conflict. Unfortunately, this does not work particularly well...

    peter
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