Re: [PATCH v8 9/9] x86/smpboot: Serialize topology updates for secondary bringup

[Thomas Gleixner]

On Thu, Feb 09 2023 at 15:41, Usama Arif wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
> The toplogy update is performed by the AP via smp_callin() after the BSP
> has called do_wait_cpu_initialized(), setting the AP's bit in
> cpu_callout_mask to allow it to proceed.
>
> In preparation to enable further parallelism of AP bringup, add locking to
> serialize the update even if multiple APs are (in future) permitted to
> proceed through the next stages of bringup in parallel.

This one is also only relevant for further parallelisation, right?

Thanks,

        tglx