map during kernel-mode, so that the kernel easily can access the corresponding
user-mode process' data.
-As a comparision, the Linux/i386 2.0 puts the kernel and physical RAM at
+As a comparison, the Linux/i386 2.0 puts the kernel and physical RAM at
address 0, overlapping with the user-mode virtual space, so that descriptor
registers are needed for each memory access to specify which MMU space to
map through. That changed in 2.2, putting the kernel/physical RAM at