linux-kernel - Re: [PATCH v2 0/2] powerpc:85xx: fix timebase sync issue when CONFIG_HOTPLUG

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Message-Id: <163395399480.4094789.15095321874781475669.b4-ty@ellerman.id.au>
Date:   Mon, 11 Oct 2021 23:06:34 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     paul.gortmaker@...driver.com, linuxppc-dev@...ts.ozlabs.org,
        mpe@...erman.id.au, Xiaoming Ni <nixiaoming@...wei.com>,
        stable@...r.kernel.org, oss@...error.net, benh@...nel.crashing.org,
        chenhui.zhao@...escale.com, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, paulus@...ba.org,
        Yuantian.Tang@...scale.com
Cc:     liuwenliang@...wei.com, chenjianguo3@...wei.com, wangle6@...wei.com
Subject: Re: [PATCH v2 0/2] powerpc:85xx: fix timebase sync issue when CONFIG_HOTPLUG_CPU=n

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