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    SubjectCalling current() from interrupt context

    I'd just like to confirm that it's illegal to call current()
    from interrupt-handling code.

    I'm working on the VAX port and the reason I ask is that the
    VAX has separate stack pointers for user, kernel and interrupt
    contexts. Therefore, the current = (SP & ~8192) hack will give
    completely bogus results when handling an interrupt.

    My feeling is that interrupt code has no business calling current(),
    but I don't know the kernel well enough to be sure. Is there any
    interrupt-level code that calls current() or is it a design
    principle that it cannot be called?


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      Last update: 2005-03-22 12:39    [W:0.046 / U:114.048 seconds]
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