Excerpts from Stephen Rothwell's message of June 18, 2021 7:44 pm:
> Hi all,
>
> Today's linux-next merge of the akpm-current tree got a conflict in:
>
> arch/powerpc/kernel/smp.c
>
> between commit:
>
> 86f46f343272 ("powerpc/32s: Initialise KUAP and KUEP in C")
>
> from the powerpc tree and commit:
>
> 103e676c91d0 ("lazy tlb: introduce lazy mm refcount helper functions")
>
> from the akpm-current tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
This is the correct merge.
Thanks,
Nick
>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc arch/powerpc/kernel/smp.c
> index b83a59ce9beb,b289f1d213f8..000000000000
> --- a/arch/powerpc/kernel/smp.c
> +++ b/arch/powerpc/kernel/smp.c
> @@@ -1541,11 -1541,7 +1541,11 @@@ void start_secondary(void *unused
> {
> unsigned int cpu = raw_smp_processor_id();
>
> + /* PPC64 calls setup_kup() in early_setup_secondary() */
> + if (IS_ENABLED(CONFIG_PPC32))
> + setup_kup();
> +
> - mmgrab(&init_mm);
> + mmgrab_lazy_tlb(&init_mm);
> current->active_mm = &init_mm;
>
> smp_store_cpu_info(cpu);
>
