On Wed, 29 Apr 2026 at 20:35, Mathieu Desnoyers
<[email protected]> wrote:
> On 2026-04-29 11:47, Steven Rostedt wrote:
> > On Wed, 29 Apr 2026 11:43:55 -0400
> > Steven Rostedt <[email protected]> wrote:
> >
> >> diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl
> >> b/arch/powerpc/kernel/syscalls/syscall.tbl
> >> index 4fcc7c58a105..005441233932 100644
> >> --- a/arch/powerpc/kernel/syscalls/syscall.tbl
> >> +++ b/arch/powerpc/kernel/syscalls/syscall.tbl
> >> @@ -562,3 +562,4 @@
> >> 469 common file_setattr sys_file_setattr
> >> 470 common listns sys_listns
> >> 471 nospu rseq_slice_yield sys_rseq_slice_yield
> >> +472 nospu stacktrace_setup sys_stacktrace_setup
> >
> > BTW, I have no idea what "nospu" is. I did some searches for PowerPC and
> > spu vs nospu and the only thing I found was a stackoverflow asking about
> > it, and the response was "don't worry about it".
> >
> > I only picked nospu because I noticed that rseq_slice_yield used it, but
> > that doesn't give me a good feeling that it's correct.
>
> AFAIR PowerPC SPUs are the Cell "Synergistic Processing Units", e.g.
> for Playstation 3.
Exactly. System call numbers are the same for normal (PPU = PowerPC)
CPUs and SPUs, but SPUs don't need all syscalls. Hence the option to
exclude a syscall for the SPUs by marking it "nospu".
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
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
