Re: [PATCH v2] cpu: mark cpu_possible_mask as __ro_after_init

From: Guenter Roeck
Date: Wed Mar 27 2024 - 14:36:40 EST


On Wed, Mar 27, 2024 at 06:10:53PM +0000, Jonathan Cameron wrote:
> On Thu, 22 Feb 2024 14:19:35 +0300
> Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote:
>
> > cpu_possible_mask is by definition "cpus which could be hotplugged without
> > reboot". It's a property which is fixed after kernel enumerates hardware
> > configuration.
> >
> > Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
>
> Causes a crash in this path (via CPU HP testing on qemu)
> Pretending to be an AMD Genoa, but I doubt that matters.
>

Can you send me the configuration, qemu command line, and commands
executed ? I'd like to add that to my test setup if possible.

Thanks,
Guenter