memcpy in userspace?

[Anant Narayanan <anant@xxxxxx>]

Hi,

As a followup to my previous post, my problem would be solved if there  
is some way of copying data from a userspace virtual memory location  
to another userspace location.

I've seen a function called copy_in_user(), but that hasn't been  
implemented for x86 (only for x86-64, arm and mips).

I can't seem to use memcpy(), the kernel crashes with eip=0x0. Not  
surprising though, as I pass raw virtual userspace addresses to the  
function.

Thanks in advance!

--
Anant

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