From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Christopher S. Aker" <caker@theshore.net>
Subject: 2.6.27 - SMP enabled, but only 1 CPU
Date: Mon, 13 Oct 2008 17:24:41 -0400
Message-ID: <48F3BC99.5040409@theshore.net>
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I just compiled 2.6.27 (pae) using my .config from 2.6.26.  It boots 
fine, but only one CPU shows up, despite "vcpus = 4" and all of the SMP 
goodness enabled.  This happens on both Xen 3.2.x and 3.3.x (64 bit 
hypervisor).

beefcake:2.6.27-linode14# grep SMP .config
CONFIG_X86_SMP=y
CONFIG_X86_32_SMP=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
CONFIG_SMP=y
CONFIG_X86_FIND_SMP_CONFIG=y
# CONFIG_X86_VSMP is not set
CONFIG_PM_SLEEP_SMP=y

root@ubuntu:~# uname -a
Linux ubuntu 2.6.27-linode14 #1 SMP Sun Oct 12 20:34:47 EDT 2008 i686 
GNU/Linux
root@ubuntu:~# cat /proc/cpuinfo
processor	: 0
...
(and that's it -- just one CPU)

I must be missing something obvious, so I'd appreciate another set of 
eyes on this.  My .config, boot log, and xen.conf are located here:

http://www.theshore.net/~caker/xen/2.6.27-linode14/config.txt
http://www.theshore.net/~caker/xen/2.6.27-linode14/bootlog.txt
http://www.theshore.net/~caker/xen/2.6.27-linode14/xen.conf

Thanks,
-Chris