Copy_to_user/copy_from_user

[Amit Purohit <whoami_t@yahoo.com>]

As the kernel address space in the new linux kernels
spans the entire 0 to 4 GB, still why do we need to do
copy_to_user or copy_from user ?

The kernel code can very well access the user data
without using the above functions. Then why do we
still have those functions ?

--Amit



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