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Fri Oct 22 17:57:35 EDT 2010


enum {
        PER_LINUX =             0x0000,
        PER_LINUX_32BIT =       0x0000 | ADDR_LIMIT_32BIT,
        PER_LINUX_FDPIC =       0x0000 | FDPIC_FUNCPTRS,
        PER_SVR4 =              0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
        [...]

So this is a combination of a personality ID and flag bits.  And the 
only difference between PER_LINUX and PER_LINUX_32BIT is one of those 
flag bits.


Nicolas



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