Re: [PATCH V9 05/21] csky: System Call

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On Wed, Oct 17, 2018 at 05:02:33PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:01 AM Guo Ren <ren_guo@xxxxxxxxx> wrote:
> >
> > This patch adds files related to syscall.
> >
> > Signed-off-by: Guo Ren <ren_guo@xxxxxxxxx>
> > Cc: Arnd Bergmann <arnd@xxxxxxxx>
> 
> Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
> 
> I had a detailed look at this one and provided lots of comments, however
> one tiny thing escaped me:
> 
> > +#define __NR_set_thread_area   (__NR_arch_specific_syscall + 0)
> > +__SYSCALL(__NR_set_thread_area, sys_set_thread_area)
> > +#define __NR_cacheflush                (__NR_arch_specific_syscall + 4)
> > +__SYSCALL(__NR_cacheflush, sys_cacheflush)
> 
> It's odd that the second one uses __NR_arch_specific_syscall + 4 rather
> than +1. If you can still change that changing too much other stuff,
> that might avoid some head-scratching later. If it causes problems,
> just leave it and maybe add a comment saying that the numbers
> inbetween are still available.
Change to (__NR_arch_specific_syscall + 1) is ok for now.

Best Regards
 Guo Ren



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