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Subject: Re: [PATCH] acpi: arm64: fix section mismatch warning
To:     Arnd Bergmann <arnd@kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Sudeep Holla <sudeep.holla@arm.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>
CC:     Arnd Bergmann <arnd@arndb.de>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Marc Zyngier <maz@kernel.org>, <linux-acpi@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
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References: <20210927141921.1760209-1-arnd@kernel.org>
From:   Hanjun Guo <guohanjun@huawei.com>
Message-ID: <988fa24c-76d2-1c9d-9761-b356efb0576c@huawei.com>
Date:   Tue, 12 Oct 2021 15:03:29 +0800
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Hi Arnd,

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/

Thanks
Hanjun