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| author | Alex Nixon <alex.nixon@citrix.com> | 2008-08-22 12:52:15 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-25 11:25:14 +0200 |
| commit | d68d82afd4c88e25763b23cd9cd4974573a3706f (patch) | |
| tree | 42a3fb93a5cef70db7ad01fda1ed0dc68dbe6110 /drivers/xen/events.c | |
| parent | x86: separate generic cpu disabling code from APIC writes in cpu_disable (diff) | |
| download | linux-d68d82afd4c88e25763b23cd9cd4974573a3706f.tar.xz linux-d68d82afd4c88e25763b23cd9cd4974573a3706f.zip | |
xen: implement CPU hotplugging
Note the changes from 2.6.18-xen CPU hotplugging:
A vcpu_down request from the remote admin via Xenbus both hotunplugs the
CPU, and disables it by removing it from the cpu_present map, and removing
its entry in /sys.
A vcpu_up request from the remote admin only re-enables the CPU, and does
not immediately bring the CPU up. A udev event is emitted, which can be
caught by the user if he wishes to automatically re-up CPUs when available,
or implement a more complex policy.
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/xen/events.c')
| -rw-r--r-- | drivers/xen/events.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index b6c2b8f16bee..c3290bc186a0 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -360,6 +360,10 @@ static void unbind_from_irq(unsigned int irq) per_cpu(virq_to_irq, cpu_from_evtchn(evtchn)) [index_from_irq(irq)] = -1; break; + case IRQT_IPI: + per_cpu(ipi_to_irq, cpu_from_evtchn(evtchn)) + [index_from_irq(irq)] = -1; + break; default: break; } |