# Re: \[PATCH v2 0/2\] powerpc:85xx: fix timebase sync issue when CONFIG\_HOTPLUG\_CPU=n

- From: Michael Ellerman \<hidden\>
- Date: 2021-10-11 12:08:07 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/10/1537432
- Thread: https://ratatoskr.run/linuxppc-dev/2021/09/1521765/t.md

```text
On Wed, 29 Sep 2021 11:36:44 +0800, Xiaoming Ni wrote:
> When CONFIG_SMP=y, timebase synchronization is required for mpc8572 when
>  the second kernel is started
> 	arch/powerpc/kernel/smp.c:
> 	int __cpu_up(unsigned int cpu, struct task_struct *tidle)
> 	{
> 		...
> 		if (smp_ops->give_timebase)
> 			smp_ops->give_timebase();
> 		...
> 	}
> 
> [...]

Applied to powerpc/next.

[1/2] powerpc:85xx:Fix oops when mpc85xx_smp_guts_ids node cannot be found
      https://git.kernel.org/powerpc/c/3c2172c1c47b4079c29f0e6637d764a99355ebcd
[2/2] powerpc:85xx: fix timebase sync issue when CONFIG_HOTPLUG_CPU=n
      https://git.kernel.org/powerpc/c/c45361abb9185b1e172bd75eff51ad5f601ccae4

cheers
```