From: Gerard Snitselaar <dev@snitselaar.org>
Subject: section mismatch in vcpu_hotplug() in linux-next
Date: Sun, 18 Mar 2012 19:35:31 -0700
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I get the following section mismatch when building linux-next:

WARNING: vmlinux.o(.text+0xc93f32): Section mismatch in reference from the function vcpu_hotplug() to the function .cpuinit.text:cpu_up()
The function vcpu_hotplug() references
the function __cpuinit cpu_up().
This is often because vcpu_hotplug lacks a __cpuinit 
annotation or the annotation of cpu_up is wrong.

Is this a benign warning?