From: Anthony PERARD <anthony.perard@citrix.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@citrix.com>,
Xen Devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH 7/7] xen: Implement hot_add_cpu hook.
Date: Thu, 20 Jun 2013 14:19:34 +0100 [thread overview]
Message-ID: <51C30166.5090307@citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1306201215260.4548@kaball.uk.xensource.com>
On 20/06/13 12:21, Stefano Stabellini wrote:
> Can't we just call pc_new_cpu and cpu_x86_create like upstream QEMU
> does?
> Are there any reasons why we can't introduce the same
> cpu_added_notifier that is upstream?
Yes, in our current version of qemu-xen, a CPU can not be hotplug.
When pc_new_cpu is called, there is a check to see if this object (cpu)
can be hotplug to the machine. The original patch series was introducing
that, I think. So it would require few more patches from QEMU which
would made the backport more complicated.
And the notifier depend on the creation of new object cpu.
--
Anthony PERARD
next prev parent reply other threads:[~2013-06-20 13:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 14:13 [PATCH v2 0/7] CPU hotplug for qemu-xen for 4.3 Anthony PERARD
2013-06-17 14:15 ` [PATCH 1/7] cpu: Introduce get_arch_id() method and override it for X86CPU Anthony PERARD
2013-06-17 14:15 ` [PATCH 2/7] cpu: Add qemu_for_each_cpu() Anthony PERARD
2013-06-17 14:15 ` [PATCH 3/7] acpi_piix4: Add infrastructure to send CPU hot-plug GPE to guest Anthony PERARD
2013-06-17 14:15 ` [PATCH 4/7] Add hot_add_cpu hook to QEMUMachine Anthony PERARD
2013-06-17 14:15 ` [PATCH 5/7] QMP: Add cpu-add command Anthony PERARD
2013-06-17 14:15 ` [PATCH 6/7] xen: Fix vcpus initialisation Anthony PERARD
2013-06-20 11:14 ` Stefano Stabellini
2013-06-17 14:15 ` [PATCH 7/7] xen: Implement hot_add_cpu hook Anthony PERARD
2013-06-20 11:21 ` Stefano Stabellini
2013-06-20 13:19 ` Anthony PERARD [this message]
2013-06-20 13:40 ` Stefano Stabellini
2013-06-21 17:40 ` Anthony PERARD
2013-06-17 14:20 ` [PATCH v2 1/2] libxl: Add "cpu-add" QMP command Anthony PERARD
2013-06-17 14:20 ` [PATCH v2 2/2] libxl: Use QMP cpu-add to hotplug CPU with qemu-xen Anthony PERARD
2013-06-17 15:31 ` Ian Campbell
2013-06-17 15:50 ` Anthony PERARD
2013-06-20 11:12 ` Stefano Stabellini
2013-06-17 15:25 ` [PATCH v2 1/2] libxl: Add "cpu-add" QMP command Ian Campbell
2013-06-17 15:28 ` Anthony PERARD
2013-06-17 15:31 ` Ian Campbell
2013-06-17 14:22 ` [PATCH v2] xen: Allow CPU to be counted than currently "plugged" Anthony PERARD
2013-06-17 15:24 ` Ian Campbell
2013-06-17 15:44 ` Anthony PERARD
2013-06-24 16:57 ` [PATCH v2 0/7] CPU hotplug for qemu-xen for 4.3 Stefano Stabellini
2013-06-24 17:21 ` Stefano Stabellini
2013-06-24 17:28 ` Anthony PERARD
2013-06-25 9:19 ` George Dunlap
2013-06-25 11:40 ` Stefano Stabellini
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