Messages in this thread | | | Date | Sun, 13 Feb 2011 15:03:47 -0800 | Subject | Re: X32 psABI status | From | "H.J. Lu" <> |
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On Sun, Feb 13, 2011 at 2:57 PM, Arnd Bergmann <arnd@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.
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