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Re: [Qemu-devel] [RFC PATCH 0/7] hw/arm/virt: Add cpu-add way cpu hotplu

From: Shannon Zhao
Subject: Re: [Qemu-devel] [RFC PATCH 0/7] hw/arm/virt: Add cpu-add way cpu hotplug support
Date: Thu, 26 Feb 2015 15:32:15 +0800
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.4.0

On 2015/2/19 1:19, Wei Huang wrote:
> Nice work. I will help review the patches.
Thanks for your help :-)

> Other than the CPU hotplug support, we are also seeking the guest VM
> powerdown support via ACPI. This feature is important for management
> tool to control guest VMs. In fact I had a similar GPIO patch for
> powerdown recently. Given that you already posted a more complete
> version, I wonder if you can add this feature to your patchset? FYI, I
> attached my powerdown patch in this email. Here is a brief list of items:
> * DSDT description of power button (to-be-done)
> * Hook up with qemu_qemu_register_powerdown_notifier() with the GPIO IRQ
> Feel free to add my name as signed-off-by in this feature if you decide
> to add it.

Yes, I think the powerdown support is very useful, but maybe this feature can be
added by a new patchset as this patchset cares about CPU hotplug.

We can add powerdown, memory hotplug, cpu remove and memory remove support step
by step if the approach of this patchset is accepted. I can make a patch to add
powerdown support based on this patchset and your attached patch if you want to
test this feature. How do you think about this?


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