[PATCH] riscv: cpu-hotplug: clear cpu from numa map when teardown

[Palmer Dabbelt]

On Sun, 23 Jan 2022 04:13:52 PST (-0800), kernelfans at gmail.com wrote:
> There is numa_add_cpu() when cpus online, accordingly, there should be
> numa_remove_cpu() when cpus offline.
>
> Signed-off-by: Pingfan Liu <kernelfans at gmail.com>
> Cc: Paul Walmsley <paul.walmsley at sifive.com>
> Cc: Palmer Dabbelt <palmer at dabbelt.com>
> Cc: Albert Ou <aou at eecs.berkeley.edu>
> Cc: Jisheng Zhang <jszhang at kernel.org>
> To: linux-riscv at lists.infradead.org
> ---
>  arch/riscv/kernel/cpu-hotplug.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/kernel/cpu-hotplug.c b/arch/riscv/kernel/cpu-hotplug.c
> index be7f05b542bb..78d156a359ef 100644
> --- a/arch/riscv/kernel/cpu-hotplug.c
> +++ b/arch/riscv/kernel/cpu-hotplug.c
> @@ -40,6 +40,7 @@ int __cpu_disable(void)
>  		return ret;
>
>  	remove_cpu_topology(cpu);
> +	numa_remove_cpu(cpu);
>  	set_cpu_online(cpu, false);
>  	irq_migrate_all_off_this_cpu();

Thanks, this is on fixes.  I don't really have any NUMA-related test 
setups, but if someone has a QEMU-based config that's meaningful then 
I'm happy to add it.