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From: Peter Maydell <peter.maydell@linaro.org>
To: Igor Mammedov <imammedo@redhat.com>
Cc: Andrew Jones <drjones@redhat.com>,
	bthakur@codeaurora.org, Christoffer Dall <cdall@cs.columbia.edu>,
	Christoffer Dall <cdall@kernel.org>,
	QEMU Developers <qemu-devel@nongnu.org>,
	Christoffer Dall <christofferdall@christofferdall.dk>,
	qemu-arm <qemu-arm@nongnu.org>,
	kvmarm@lists.cs.columbia.edu
Subject: Re: [Qemu-devel] [Qemu-arm]  VCPU hotplug on KVM/ARM
Date: Thu, 1 Mar 2018 10:05:09 +0000	[thread overview]
Message-ID: <CAFEAcA9yaU745Asy--jM0nu8FDJ62CEXSH_TKa-ZZfC16qye6w@mail.gmail.com> (raw)
In-Reply-To: <20180301105030.2b716e68@redhat.com>

On 1 March 2018 at 09:50, Igor Mammedov <imammedo@redhat.com> 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.

thanks
-- PMM

WARNING: multiple messages have this Message-ID (diff)
From: Peter Maydell <peter.maydell@linaro.org>
To: Igor Mammedov <imammedo@redhat.com>
Cc: Christoffer Dall <cdall@cs.columbia.edu>,
	QEMU Developers <qemu-devel@nongnu.org>,
	Christoffer Dall <christofferdall@christofferdall.dk>,
	qemu-arm <qemu-arm@nongnu.org>,
	kvmarm@lists.cs.columbia.edu
Subject: Re: [Qemu-arm] [Qemu-devel] VCPU hotplug on KVM/ARM
Date: Thu, 1 Mar 2018 10:05:09 +0000	[thread overview]
Message-ID: <CAFEAcA9yaU745Asy--jM0nu8FDJ62CEXSH_TKa-ZZfC16qye6w@mail.gmail.com> (raw)
In-Reply-To: <20180301105030.2b716e68@redhat.com>

On 1 March 2018 at 09:50, Igor Mammedov <imammedo@redhat.com> 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.

thanks
-- PMM

  reply	other threads:[~2018-03-01 10:05 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-27  9:31 VCPU hotplug on KVM/ARM bthakur
2018-02-27 10:47 ` Christoffer Dall
2018-02-27 12:04   ` bthakur
2018-02-27 12:46     ` Christoffer Dall
2018-02-27 13:21       ` [Qemu-devel] " Andrew Jones
2018-02-27 13:21         ` Andrew Jones
2018-03-01  9:50         ` [Qemu-devel] " Igor Mammedov
2018-03-01  9:50           ` Igor Mammedov
2018-03-01 10:05           ` Peter Maydell [this message]
2018-03-01 10:05             ` [Qemu-arm] " Peter Maydell
2018-03-01 13:32             ` [Qemu-devel] [Qemu-arm] " David Hildenbrand
2018-03-01 13:32               ` David Hildenbrand
2018-03-07 12:47               ` Marc Zyngier
2018-03-07 12:47                 ` Marc Zyngier
2018-07-24 18:35         ` [Qemu-devel] " Maran Wilson
2018-07-24 18:35           ` Maran Wilson
2018-07-25  6:45           ` [Qemu-devel] " Igor Mammedov
2018-07-25  6:45             ` Igor Mammedov
2018-07-25 10:40           ` Marc Zyngier
2018-07-25 10:40             ` Marc Zyngier
2018-07-25 12:28             ` [Qemu-devel] " Andrew Jones
2018-07-25 12:28               ` Andrew Jones
2018-07-25 13:07               ` Marc Zyngier
2018-07-25 13:07                 ` Marc Zyngier
2018-07-25 17:26                 ` Maran Wilson
2018-07-25 17:26                   ` Maran Wilson
2018-07-31 10:27                 ` Igor Mammedov
2018-07-31 10:27                   ` Igor Mammedov
2018-07-31 10:57                   ` David Hildenbrand
2018-07-31 10:57                     ` David Hildenbrand
2018-08-01  8:09                   ` Bharata B Rao
2018-08-01  8:09                     ` Bharata B Rao

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