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    SubjectRe: access_ok inside kernelspace
    On Tue, 19 Oct 1999, Ingo Molnar wrote:
    > You can pick whichever variant you prefer - obviously you should pick the
    > fastest possible one. A number of system call base functions are exported
    > btw. as a kernel symbol, so you can link your module eg. against
    > sys_close() just fine.

    sys_close() and sys_tz() are the only ones exported on x86, I think. But
    sys_call_table[] is also exported so presumably it is the best to make
    a system call from a module via sys_call_table[__NR_XXX] pointer.


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