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[Qemu-devel] Enable x86 linux guest with cpu hotplug feature.
From: |
pingfank |
Subject: |
[Qemu-devel] Enable x86 linux guest with cpu hotplug feature. |
Date: |
Tue, 4 Oct 2011 19:13:35 +0800 |
From: Liu Ping Fan <address@hidden>
A bunch of patches, which are applied separately for kernel and qemu-kvm,
and make x86 based linux guest with cpu hotplug feature.
For kernel:
0001-ACPI-Call-ACPI-remove-handler-when-handling-ACPI-eje.patch
--call acpi eject event handler in acpi_bus_notify()
For qemu-kvm:
0001-ACPI-Update-cpu-hotplug-event-for-guest.patch
--trigger acpi cpu hotplug event for guest, so qemu-kvm can bring present cpu
to online state
0002-LAPIC-make-lapic-support-cpu-hotplug.patch
--make qemu-kvm support to bring possible cpu to present state.
After applying these patches, we can bring possible cpu online
by the following step.
1.Boot up qemu-kvm with the param "-smp 1,maxcpu=4",
2.Use "cpu_set 2 online" cmd in qemu monitor to bring possible cpu
to present state.
3.In guest,echo 1 > cpu2/online to bring the present cpu to online
state.
- [Qemu-devel] Enable x86 linux guest with cpu hotplug feature.,
pingfank <=