On Mon, Feb 11, 2013 at 4:51 PM, पारस <bepa...@gmail.com> wrote: > Hi All, > > To read/write data to user-space from kernel-space we use copy_from_user() > and copy_to_user() functions. > > What is the use of these function? > Why kernel can't directly access user address and read/write on to it? what will happen if the user space process gets scheduled out while you were using it? > Can any one explain why kernel can't directly access the user-space address. > > Thanks > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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