Messages in this thread |  | | Date | Wed, 25 May 2011 15:00:30 +0200 | | Subject | Re: [GIT PULL] Namespace file descriptors for 2.6.40 | | From | Geert Uytterhoeven <> |
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On Wed, May 25, 2011 at 14:47, Ingo Molnar <mingo@elte.hu> wrote: > * Geert Uytterhoeven <geert@linux-m68k.org> wrote: > >> > But at least the primary, 'native' syscall table of every arch >> > could be kept rather fresh via generic enumeration. >> >> So we can start all over at offset 501 (alpha just started using >> 500) with a unified, clean, and compressed list of syscalls? Or do >> we have some more other-os-compat syscalls around in this range? > > No, that would leave a big hole in the syscall table of most > architectures.
Sure, but we could (a) optimize for the case where the syscall number is larger than 500 and/or (b) drop support for syscall numbers smaller than 501, depending on a config option.
> So what would be needed is for each architecture to define a 'generic > syscall table base index', ARCH_SYSCALL_BASE or so, and the generic > syscalls would be added for that. > > Alpha would have 501, the others lower numbers. > > The only general assumption we can rely on is that there's a range of > not yet used syscall numbers starting at the end of the current > syscall table.
Yep, that would work too.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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