Date: Sun, 20 Feb 2011 09:10:20 +0000
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Daniel Walker <dwalker@fifo99.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>, linux-arm-msm@vger.kernel.org,
        David Brown <davidb@codeaurora.org>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] msm: headsmp.S: Fix section mismatch
Message-ID: <20110220091020.GA14288@n2100.arm.linux.org.uk>
References: <1298085249-10518-1-git-send-email-sboyd@codeaurora.org> <1298168817.17118.2.camel@m0nster>
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On Sat, Feb 19, 2011 at 06:26:57PM -0800, Daniel Walker wrote:
> On Fri, 2011-02-18 at 19:14 -0800, Stephen Boyd wrote:
> > WARNING: vmlinux.o(.cpuinit.text+0xc80): Section mismatch in
> > reference from the function boot_secondary() to the variable
> > .init.text:msm_secondary_startup
> > The function __cpuinit boot_secondary() references a variable
> > __init msm_secondary_startup.  If msm_secondary_startup is only
> > used by boot_secondary then annotate msm_secondary_startup with
> > a matching annotation.
> 
> Description is pretty gross.. Can you just explain how the section
> mismatch is happening.

That's the error message, which is explanitory.

mem_secondary_startup is in the __init section, which is always discarded.
boot_secondary is in the __cpuinit section, which may or may not be
discarded, and if CPU hotplug is enabled, may be called after the __init
section has been discarded.
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