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| From: | Jason J. Herne |
| Subject: | [Qemu-devel] [PATCH 0/8] [PATCH RFC v2] s390-qemu: cpu hotplug |
| Date: | Fri, 7 Jun 2013 13:27:59 -0400 |
Latest code for cpu Hotplug designed to be controled via the QOM infrastructure. cpu on S390 are treated as devices via a new platform independent infrastructure I designed to allow this "new way" to exist with the "old way" of representing cpus. The Qemu command line now allows "-device s390-cpu" which will instantiate a cpu device. This is additive to anything that might be specified on the -smp parameter. Devices can be hot plugged via the monitor command "device_add s390-cpu". Hotplugged cpus are created in the configured state and can be used by the guest after the guest onlines the cpu by: "echo 1 > /sys/bus/cpu/devices/cpuN/online" Hot unplugging is currently not implemented by this code.
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