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    SubjectRe: The great alpha compile warning hunt
    On Fri, 23 Jul 1999, Albert D. Cahalan spouts:
    > > You should UPcast to a long in most cases, not downcast to an int.
    > This is not good. Every printk() with the problem ends up with
    > an extra character in the format string and possibly extra overhead.
    > For what? So you can have a 5 GB structure in kernel space?

    So you can see when the top half of a 64 bit pointer has been trashed.

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