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Re: [Xen-devel] only one CPU is detected when dom0 boots up

To: "Zheng, Jeff" <jeff.zheng@xxxxxxxxx>
Subject: Re: [Xen-devel] only one CPU is detected when dom0 boots up
From: Ryan Harper <ryanh@xxxxxxxxxx>
Date: Thu, 25 May 2006 09:25:14 -0500
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* Zheng, Jeff <jeff.zheng@xxxxxxxxx> [2006-05-25 09:16]:
> When we changed build configure to:
> KERNELS="linux-2.6-xen0 linux-2.6-xenU"
> export KERNELS
> After reboot to this xen0, we found there is only one CPU in xen0.
> "uname -a" shows it's a SMP but "cat /proc/cpuinfo" shows only one cpu.
> We see this issue on ChangeSet 10143 and 10151.
> If we build with the default configure, we can see all cpus in xen0.

linux-defconfig_xen0_x86* does [1]not have CONFIG_SMP set, so unless
you've manually changed the linux config, you won't see more than one

1.  % grep CONFIG_SMP buildconfigs/linux-defconfig_xen0_x86_*
buildconfigs/linux-defconfig_xen0_x86_32:# CONFIG_SMP is not set
buildconfigs/linux-defconfig_xen0_x86_64:# CONFIG_SMP is not set

Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253

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