linux-kernel - Re: linux-next: manual merge of the rcu tree with the powerpc tree

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Message-ID: <20200521145124.48ae408b@canb.auug.org.au>
Date:   Thu, 21 May 2020 14:51:24 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        PowerPC <linuxppc-dev@...ts.ozlabs.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>
Cc:     "Paul E. McKenney" <paulmck@...nel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nicholas Piggin <npiggin@...il.com>
Subject: Re: linux-next: manual merge of the rcu tree with the powerpc tree

Hi all,

On Tue, 19 May 2020 17:23:16 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the rcu tree got a conflict in:
> 
>   arch/powerpc/kernel/traps.c
> 
> between commit:
> 
>   116ac378bb3f ("powerpc/64s: machine check interrupt update NMI accounting")
> 
> from the powerpc tree and commit:
> 
>   187416eeb388 ("hardirq/nmi: Allow nested nmi_enter()")
> 
> from the rcu tree.
> 
> I fixed it up (I used the powerpc tree version for now) 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 now a conflict between the powerpc commit and commit

  69ea03b56ed2 ("hardirq/nmi: Allow nested nmi_enter()")

from the tip tree.  I assume that the rcu and tip trees are sharing
some patches (but not commits) :-(

-- 
Cheers,
Stephen Rothwell

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