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

[Oleksandr Natalenko]

Hello.

Thank you for your reply.

On pondělí 20. února 2023 17:20:13 CET David Woodhouse wrote:
> On Mon, 2023-02-20 at 17:08 +0100, Oleksandr Natalenko wrote:
> > 
> > I've applied this to the v6.2 kernel, and suspend/resume broke on my
> > Ryzen 5950X desktop. The machine suspends just fine, but on resume
> > the screen stays blank, and there's no visible disk I/O.
> > 
> > Reverting the series brings suspend/resume back to working state.
> 
> Hm, thanks. What if you add 'no_parallel_bringup' on the command line?

If the `no_parallel_bringup` param is added, the suspend/resume works.

> Is that using X2APIC?

Probably?

```
$ dmesg | grep -i x2apic
[    0.632740] x2apic: IRQ remapping doesn't support X2APIC mode
```

> If so, what about 'nox2apic' on the command line?

If `no_parallel_bringup` is removed and `nox2apic` is added, then the `x2apic: …` stuff disappears from dmesg, but suspend/resume remains broken.

-- 
Oleksandr Natalenko (post-factum)