Re: [PATCH] arch: avr32: add dummy syscalls

[Al Viro]

On Sun, Jan 27, 2013 at 09:39:54PM +0100, Hans-Christian Egtvedt wrote:
> > If you are OK with going that way, I could probably put together patches doing
> > just that.  Note that for rt_sigsuspend/rt_sigreturn/sigaltstack the wrappers
> > are not needed at all - they can just use current_pt_regs() in syscall body.
> > IOW, all of syscall-stubs.S could be killed.
> 
> Nice, could you put together the preprocessor stuff in a patch? It would be
> great to not having to write a re-occuring stub for each syscall that has 6+
> arguments.
> 
> Thanks for looking at this.

Apologies about the delay...  One question: what's the AVR32 C ABI for
passing 64bit arguments?  The tricky bugger is sys_sync_file_range();
it takes (s32, s64, s64, u32) as arguments and if not any pair of
registers can be used to pass 64bit value, we have more serious trouble
there...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/