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Re: [PATCH v4 0/8] Introduce the microvm machine type
From: |
Paolo Bonzini |
Subject: |
Re: [PATCH v4 0/8] Introduce the microvm machine type |
Date: |
Wed, 25 Sep 2019 10:26:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 25/09/19 10:10, Sergio Lopez wrote:
> That would be great. I'm also looking forward for virtio-mem (and an
> hypothetical virtio-cpu) to eventually gain hotplug capabilities in
> microvm.
I disagree with this. virtio is not a silver bullet (and in fact
perhaps it's just me but I've never understood the advantages of
virtio-mem over anything else).
If you want to add hotplug to microvm, you can reuse the existing code
for CPU and memory hotplug controllers, and write drivers for them in
Linux's drivers/platform. The drivers would basically do what the ACPI
AML tells the interpreter to do.
There is no reason to add the complexity of virtio to something as
low-level and deadlock-prone as CPU hotplug.
Paolo
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- Re: [PATCH v4 8/8] hw/i386: Introduce the microvm machine type, (continued)
- Re: [PATCH v4 0/8] Introduce the microvm machine type, David Hildenbrand, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, Pankaj Gupta, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type,
Paolo Bonzini <=
- Re: [PATCH v4 0/8] Introduce the microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, David Hildenbrand, 2019/09/25
- when to use virtio (was Re: [PATCH v4 0/8] Introduce the microvm machine type), Paolo Bonzini, 2019/09/25
- Re: when to use virtio (was Re: [PATCH v4 0/8] Introduce the microvm machine type), David Hildenbrand, 2019/09/25
- Re: when to use virtio (was Re: [PATCH v4 0/8] Introduce the microvm machine type), Paolo Bonzini, 2019/09/25
- Re: when to use virtio (was Re: [PATCH v4 0/8] Introduce the microvm machine type), David Hildenbrand, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, Gerd Hoffmann, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, Paolo Bonzini, 2019/09/25
- Re: [PATCH v4 0/8] Introduce the microvm machine type, David Hildenbrand, 2019/09/25
Re: [PATCH v4 0/8] Introduce the microvm machine type, Christian Borntraeger, 2019/09/26