Are there any special steps required when changing processor count?

We have some Linux Servers with 2 CPU's out of 4 Sockets, and others with all 4 filled. We are considering a potential change where we remove CPU's to set our other server's at 2, and then later potentially adding more CPU's so all systems have 4. The question I have is if we can shutdown the server, remove the CPU's, and then restart the server and Linux will have no issues adapting to the change in processor count, or if there are additional steps we will need to make on the Linux side to accomodate the change in processor count.
The contractor's we usually use and would have used for this job indicate they have never run into this before so we are looking for the answer wherever we can find it. Any input would be greatly appreciated.

What do you have installed? Normally the 1st CPUs boots the system and loads the SMP Linux kernel, which brings the other CPUs or Core's online. As previously outlined, there is no re-installation or re-configuration necessary and the Linux kernel will automatically adjust.
Enterprise Linux normally uses a SMP kernel, for example:
[root@localhost ~]# grep CONFIG_SMP /boot/config-$(uname -r)
CONFIG_SMP=y
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.8.13-16.2.1.el6uek.x86_64 #1 SMP Thu Nov 7 17:01:44 PST 2013 x86_64 x86_64 x86_64 GNU/Linux
You may eventually have to check your PC BIOS to make sure CPU's are enabled.

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Yup.
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0
1
k
kilo
2
M
mega
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G
giga
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tera
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P
peta
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Y
yotta
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Are there any special steps required when changing processor count?

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