> Hi all!
>
> I just encountered a problem while trying to use
> put_user and memcpy_tofs while handling an interrrupt
> in 2.0.x .
>
> The idea behind this is fast IO. The user creates some
> buffer space and the kernel routine fills it
> directly from hardware to user space. Unfortunately
> the machine just crashes. Am i not allowed to use the
> above functions in an interrupt?
Interrupt may happen during the timeslice of another process. put_user
refers to the given address in the address space of *current* process.
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