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    SubjectRe: lib/klist.c: bit 0 in pointer can't be used as flag
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    From: Jesper Nilsson <jesper.nilsson@axis.com>
    Date: Tue, 13 Jan 2009 16:14:06 +0100

    > The commit a1ed5b0cffe4b16a93a6a3390e8cee0fbef94f86
    > (klist: don't iterate over deleted entries) introduces use of the
    > low bit in a pointer to indicate if the knode is dead or not,
    > assuming that this bit is always free.
    >
    > This is not true for all architectures, CRIS for example may align data
    > on byte borders.

    There are many other spots in the kernel where the low bits of a
    pointer are hijacked as status bits. Lots of other things cannot
    possible be working on CRIS because of this.


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