From: David Gibson <david@gibson.dropbear.id.au>
To: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>,
mdroth@linux.vnet.ibm.com, aik@ozlabs.ru, agraf@suse.de,
qemu-devel@nongnu.org, Chen Fan <chen.fan.fnst@cn.fujitsu.com>,
qemu-ppc@nongnu.org, tyreld@linux.vnet.ibm.com,
nfont@linux.vnet.ibm.com, Gu Zheng <guz.fnst@cn.fujitsu.com>,
imammedo@redhat.com, afaerber@suse.de
Subject: Re: [Qemu-devel] [RFC PATCH v4 03/11] cpus: Reclaim vCPU objects
Date: Fri, 4 Sep 2015 16:09:44 +1000 [thread overview]
Message-ID: <20150904060944.GX6537@voom.redhat.com> (raw)
In-Reply-To: <1438838837-28504-4-git-send-email-bharata@linux.vnet.ibm.com>
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On Thu, Aug 06, 2015 at 10:57:09AM +0530, Bharata B Rao wrote:
> From: Gu Zheng <guz.fnst@cn.fujitsu.com>
>
> In order to deal well with the kvm vcpus (which can not be removed without any
> protection), we do not close KVM vcpu fd, just record and mark it as stopped
> into a list, so that we can reuse it for the appending cpu hot-add request if
> possible. It is also the approach that kvm guys suggested:
> https://www.mail-archive.com/kvm@vger.kernel.org/msg102839.html
>
> Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
> Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
> Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
> Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
> [Explicit CPU_REMOVE() from qemu_kvm/tcg_destroy_vcpu()
> isn't needed as it is done from cpu_exec_exit()]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
--
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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next prev parent reply other threads:[~2015-09-04 6:20 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 [this message]
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
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