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Date:   Tue, 12 Oct 2021 15:03:29 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>
CC:     Arnd Bergmann <arnd@...db.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Marc Zyngier <maz@...nel.org>, <linux-acpi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] acpi: arm64: fix section mismatch warning

Hi Arnd,

On 2021/9/27 22:19, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.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

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