linux-kernel - Re: [PATCH rcu 0/20] Further shrink srcu

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Date:   Tue, 4 Apr 2023 13:01:50 -0400
From:   Joel Fernandes <joel@...lfernandes.org>
To:     paulmck@...nel.org
Cc:     rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...a.com, rostedt@...dmis.org, hch@....de
Subject: Re: [PATCH rcu 0/20] Further shrink srcu_struct to promote cache locality

[..]
> > The "improperly set" thingies are perhaps Kconfig on ARM64 setting some KVM
> > options slightly differently. I have seen that before as well on this board.
>
> Agreed, and one of the things on the long list is to allow arch-specific
> settings for those options.
>
> The CONFIG_SMP warnings are interesting, though.  Does arm64 disallow
> !SMP builds?  ;-)

Yes, it looks like it. As per arch/arm64/Kconfig, CONFIG_SMP is always
'y' and cannot be set.

config SMP
        def_bool y

Thanks.