2021-06-18 12:30:13

by Stephen Rothwell

[permalink] [raw]

Subject: linux-next: manual merge of the akpm-current tree with the powerpc tree

---

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.

--
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);

---

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2021-06-19 09:07:14

by Nicholas Piggin

[permalink] [raw]

Subject: Re: linux-next: manual merge of the akpm-current tree with the powerpc tree

---

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);
>