xen: honour VCPU availability on boot

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If a VM is booted with offline VCPUs then unplug them during boot. Determining
the availability of a VCPU requires access to XenStore which is not available
at the point smp_prepare_cpus() is called, therefore we bring up all VCPUS
initially and unplug the offline ones as soon as XenStore becomes available.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

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Ian Campbell 2009-04-02 13:24:28 +01:00 • committed by Jeremy Fitzhardinge

parent 6d02c42698

commit 53152f957d

1 changed files with 30 additions and 10 deletions

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drivers/xen/cpu_hotplug.c

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