Hi, Le Tue, 20 Mar 2007 03:43:32 +0100, ninjaboy <n0b0dyn1nj4@xxxxxxxxx> a écrit : > I've a little doubt, kernel VA on x86 starts at 0xc0000000 to > 0xffffffff and user VA from 0x0 to 0xbfffffff, on x86_64 i just see: > > #define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START) > #define __START_KERNEL (__START_KERNEL_map + > __PHYSICAL_START) where __PHYSICAL_START is 0x200000. > > kernel VA doesn't start at 0xffff800000000000 to 0xffffffffffffffff > and user VA from 0x0 to 0x0000bfffffffffff ? I think you're making a confusion between physical and virtual addresses. __PHYSICAL_START is a physical address, as its name suggests, while "kernel VA" is a virtual address, as its name suggests. Thomas -- Thomas Petazzoni - thomas.petazzoni@xxxxxxxx http://{thomas,sos,kos}.enix.org - http://www.toulibre.org http://www.{livret,agenda}dulibre.org -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
