[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 0/8] [PATCH RFC v2] s390-qemu: cpu hotplug
From: |
Christian Borntraeger |
Subject: |
Re: [Qemu-devel] [PATCH 0/8] [PATCH RFC v2] s390-qemu: cpu hotplug |
Date: |
Thu, 13 Jun 2013 10:50:56 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 |
On 07/06/13 19:27, Jason J. Herne wrote:
> 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.
Adding Viktor, Andreas.
Andreas, since we are the first ones going forward with cpu is a device (on a
command level)
we still have to provide the old cpu_add and query commands to make libvirt
work regarding
cpu hotplugging.
Are you ok with having the x86 commands as wrappers around the new ones?
Christian
- [Qemu-devel] [PATCH 2/8] [PATCH RFC v2] s390-qemu: cpu hotplug - SCLP CPU Info, (continued)
- [Qemu-devel] [PATCH 2/8] [PATCH RFC v2] s390-qemu: cpu hotplug - SCLP CPU Info, Jason J. Herne, 2013/06/07
- [Qemu-devel] [PATCH 7/8] [PATCH RFC v2] s390-qemu: cpu hotplug - Infrastructure for Cpu Devices, Jason J. Herne, 2013/06/07
- [Qemu-devel] [PATCH 8/8] [PATCH RFC v2] s390-qemu: cpu hotplug - Treat S390 cpus as devices, Jason J. Herne, 2013/06/07
- [Qemu-devel] [PATCH 6/8] [PATCH RFC v2] s390-qemu: cpu hotplug - Storage key Global Access, Jason J. Herne, 2013/06/07
- [Qemu-devel] [PATCH 1/8] [PATCH RFC v2] s390-qemu: cpu hotplug - Define New SCLP Codes, Jason J. Herne, 2013/06/07
- Re: [Qemu-devel] [PATCH 0/8] [PATCH RFC v2] s390-qemu: cpu hotplug,
Christian Borntraeger <=