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References: <20210927141921.1760209-1-arnd@kernel.org> <988fa24c-76d2-1c9d-9761-b356efb0576c@huawei.com>
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From:   Arnd Bergmann <arnd@kernel.org>
Date:   Tue, 12 Oct 2021 09:20:36 +0200
Message-ID: <CAK8P3a0Ny=Q=3Ass2xemWSG4wUkmojh5QxXryebiemroo6oruw@mail.gmail.com>
Subject: Re: [PATCH] acpi: arm64: fix section mismatch warning
To:     Hanjun Guo <guohanjun@huawei.com>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Sudeep Holla <sudeep.holla@arm.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Marc Zyngier <maz@kernel.org>,
        ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Oct 12, 2021 at 9:03 AM Hanjun Guo <guohanjun@huawei.com> wrote:
> On 2021/9/27 22:19, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@arndb.de>
> >
> > In a gcc-11 randconfig build I came across this warning:
> >
> > WARNING: modpost: vmlinux.o(.text.unlikely+0x2c084): Section mismatch in reference from the function next_platform_timer() to the variable .init.data:acpi_gtdt_desc
> > The function next_platform_timer() references
> > the variable __initdata acpi_gtdt_desc.
> > This is often because next_platform_timer lacks a __initdata
> > annotation or the annotation of acpi_gtdt_desc is wrong.
> >
> > This happens when next_platform_timer() fails to get inlined
> > despite the inline annotation. Adding '__init' solves the issue,
> > and it seems best to remove the 'inline' in the process seems
> > better anyway.
>
> There was a patch to fix this issue as well [1],
> but not merged yet.
>
> [1]:
> https://lore.kernel.org/linux-acpi/7f29a149-e005-f13f-2cc4-a9eb737107e1@huawei.com/T/

Right, either of those patches should be fine.

Rafael, can you pick one of them up?

       Arnd