copy to user space

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Hi,

how can I copy a stream of bytes to user space? this user space can be
anywhere in a process space (even code segment...). I tried memcpy but it
gave me "Unable to handle kernel paging request at virtual address ...".
With copy_to_user, it seemed to work but, when I tried to verify if it was
really written, it didn't!

Thanks

Luis Henriques

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