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Re: [Qemu-arm] [Qemu-devel] VCPU hotplug on KVM/ARM
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From: |
David Hildenbrand |
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Subject: |
Re: [Qemu-arm] [Qemu-devel] VCPU hotplug on KVM/ARM |
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Date: |
Thu, 1 Mar 2018 14:32:39 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 |
On 01.03.2018 11:05, Peter Maydell wrote:
> On 1 March 2018 at 09:50, Igor Mammedov <address@hidden> wrote:
>> In QEMU on x86 (and I think ppc, s390 as well), we create vCPUs on demand.>>
>> It would be nice if ARM would be able to do that too,
>> so that it could take advantage of the same code.
>
> It's not clear to me how that would work, given that for
> instance the interrupt controller wants to know up-front
> how many CPUs it has to deal with.
>
So how is cpu hotplug handled in HW? Or doesn't it even exist there?
(we have max_cpus for the interrupt controller, but not sure if that is
what we want)
> thanks
> -- PMM
>
--
Thanks,
David / dhildenb