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    SubjectRe: [PATCH] Re: export of sys_call_table
    > Following is a tested patch for i386 architecture for registration
    > of putpmsg and getpmsg system calls. This version (courtesy of
    > Dave Grothe at GCOM) uses up/down semaphore instead of read/write
    > spinlocks. The patch is against 2.4.19 but should apply up and
    > down a ways as well.

    > +EXPORT_SYMBOL(register_streams_calls);
    > +EXPORT_SYMBOL(unregister_streams_calls);

    EXPORT_SYMBOL_GPL perhaps? Otherwise it's just a disguised hook,
    just like nVidia's shell driver.

    > +static rwlock_t streams_call_lock = RW_LOCK_UNLOCKED;

    Does not look like a semaphore to me...

    -- Pete
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