Hi All, In the code http://lxr.linux.no/#linux+v2.6.12/arch/i386/kernel/head.S#L186 I am not able to understand what's the reason for subtracting swapper_pg_dir with __PAGE_OFFSET(0xc0000000). i.e. movl $swapper_pg_dir-__PAGE_OFFSET Shouldn't it be movl $swapper_pg_dir, %eax? Thanks.