> Dawson Engler writes:
> > Is there any way to automatically find these? E.g., is any routine
> > with "asmlinkage" callable from user space?
> This is only universally done in generic and x86 specific code,
> other ports tend to forget asmlinkage simply because most ports
> don't need it.
Even i386 doesn't need it because the stack frame happens to have the
right order of the arguments at the right position. Just you can get into
weird bugs when any function modifies their argument because it'll be still
modified after syscall restart but only depending if the compiler used a
temporary register or not.
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