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From: David Gibson <david@gibson.dropbear.id.au>
To: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: mdroth@linux.vnet.ibm.com, aik@ozlabs.ru, agraf@suse.de,
	qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
	tyreld@linux.vnet.ibm.com, nfont@linux.vnet.ibm.com,
	imammedo@redhat.com, afaerber@suse.de
Subject: Re: [Qemu-devel] [RFC PATCH v4 00/11] sPAPR CPU hotplug
Date: Wed, 12 Aug 2015 12:56:30 +1000	[thread overview]
Message-ID: <20150812025630.GH19634@voom.fritz.box> (raw)
In-Reply-To: <1438838837-28504-1-git-send-email-bharata@linux.vnet.ibm.com>

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On Thu, Aug 06, 2015 at 10:57:06AM +0530, Bharata B Rao wrote:
> Hi,
> 
> This is the next version of CPU hotplug support patchset for PowerPC
> sPAPR guests. This is a split-out from the previous version (v3) that
> was carrying CPU and memory hotplug together. This patchset applies on
> spapr-next branch of David Gibson's tree.
> 
> In the previous version, I was doing CPU addition at socket granularity.
> One hotplug request would add one complete CPU socket with all the cores
> and threads as per the boot time topology specification. Based on the
> feedback for v3, I am switching back to earlier method wherein I don't
> have the notion of socket device. In this version I don't create any
> additional device abstraction over CPU device, but use the existing
> CPU device and add full cores at once. One hotplug request will add
> a complete core with all the underlying threads.
> 
> I have enabled device_add based hotplug for POWER8 family for processors
> and currently the semantics looks like this:
> 
> (qemu) device_add POWER8-powerpc64-cpu,id=cpu8

I've cherry picked 5/11 (add 2.5 machine type) since we'll be wanting
it one way or another.  I have rearranged it, though, to go before the
memory hotplug patches, which are already in spapr-next, but missed
the 2.4 cutoff so shouldn't be enabled for the 2.4 machine type.

Need to wait until I have a little more time to review the rest of the
series.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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      parent reply	other threads:[~2015-08-12  2:56 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-06  5:27 [Qemu-devel] [RFC PATCH v4 00/11] sPAPR CPU hotplug Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 01/11] exec: Remove cpu from cpus list during cpu_exec_exit() Bharata B Rao
2015-09-04  5:31   ` David Gibson
2015-09-09  5:52     ` Bharata B Rao
2015-09-09  7:41       ` Zhu Guihua
2015-09-09  7:56         ` Bharata B Rao
2015-11-12  9:11           ` Zhu Guihua
2015-11-12  9:30             ` Bharata B Rao
2015-11-12  9:41               ` Zhu Guihua
2015-11-12  9:56               ` Andreas Färber
2015-11-12 11:40                 ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 02/11] exec: Do vmstate unregistration from cpu_exec_exit() Bharata B Rao
2015-09-04  6:03   ` David Gibson
2015-09-09  5:56     ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 03/11] cpus: Reclaim vCPU objects Bharata B Rao
2015-09-04  6:09   ` David Gibson
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 04/11] cpus: Add a sync version of cpu_remove() Bharata B Rao
2015-09-04  6:11   ` David Gibson
2015-09-09  5:57     ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 05/11] xics_kvm: Add cpu_destroy method to XICS Bharata B Rao
2015-08-07 11:33   ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 06/11] spapr: Create pseries-2.5 machine Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 07/11] spapr: Enable CPU hotplug for pseries-2.5 and add CPU DRC DT entries Bharata B Rao
2015-09-04  6:28   ` David Gibson
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 08/11] spapr: CPU hotplug support Bharata B Rao
2015-09-04  6:58   ` David Gibson
2015-09-09  6:52     ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 09/11] spapr: Support topologies with unfilled cores Bharata B Rao
2015-09-04  7:01   ` David Gibson
2015-09-04  8:44     ` Thomas Huth
2015-09-09  6:58       ` Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 10/11] spapr: CPU hot unplug support Bharata B Rao
2015-08-06  5:27 ` [Qemu-devel] [RFC PATCH v4 11/11] target-ppc: Enable CPU hotplug for POWER8 CPU family Bharata B Rao
2015-08-06  8:42 ` [Qemu-devel] [RFC PATCH v4 00/11] sPAPR CPU hotplug Zhu Guihua
2015-08-10  3:31   ` Bharata B Rao
2015-08-12  2:56 ` David Gibson [this message]

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