On Sun, Feb 13, 2011 at 2:57 PM, Arnd Bergmann <a...@arndb.de> wrote: > >> The cost of an entire different ABI layer (supporting a new memory layout) >> would be enormous, a.k.a. "not worth it", which is why the memory layout >> of kernel objects needs to be compatible with i386. > > Right, this makes sense, you certainly can't redefine all the data > structures. > > What would probably be a good idea is to compare the set of syscalls > in X32 and asm-generic, and to either eliminate or document the > differences. You can probably even take the asm-generic syscall numbers, > even if you keep the i386 data structures. >
x32 system call number is BASE + 64bit system call number. It is easy to keep 64bit and x32 in sync. -- H.J.
