Re: [PATCH v9 0/8] Parallel CPU bringup for x86_64

[Oleksandr Natalenko]

On 21.02.2023 11:27, David Woodhouse wrote:
> On 21 February 2023 09:49:51 GMT, Oleksandr Natalenko 
> <oleksandr@xxxxxxxxxxxxxx> wrote:
> > On 21.02.2023 10:06, David Woodhouse wrote:
> > > Why does arch/x86/kernel/acpi/sleep.c::x86_acpi_suspend_lowlevel() 
> > > set
> > >
> > >     initial_gs = per_cpu_offset(smp_processor_id()) ?
> > >
> > > Would it not be CPU#0 that comes back up, and should it not get
> > > per_cpu_offset(0) ?
> >
> > Wanna me try `initial_gs = per_cpu_offset(0);` too?
>
> Hm, yes please. There's another one to make zero on the next line up, I 
> think?

So,

```
early_gdt_descr.address = (unsigned long)get_cpu_gdt_rw(0);
initial_gs = per_cpu_offset(0);
```

?

Should I leave `smpboot_control = 0;` commented out, or I should 
uncomment it back?

--
  Oleksandr Natalenko (post-factum)