Re: [PATCH v4 0/8] Introduce the microvm machine type

[Sergio Lopez <slp@redhat.com>]

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David Hildenbrand <david@redhat.com> writes:

> On 24.09.19 14:44, Sergio Lopez wrote:
>> Microvm is a machine type inspired by both NEMU and Firecracker, and
>> constructed after the machine model implemented by the latter.
>> 
>> It's main purpose is providing users a minimalist machine type free
>> from the burden of legacy compatibility, serving as a stepping stone
>> for future projects aiming at improving boot times, reducing the
>> attack surface and slimming down QEMU's footprint.
>> 
>> The microvm machine type supports the following devices:
>> 
>>  - ISA bus
>>  - i8259 PIC
>>  - LAPIC (implicit if using KVM)
>>  - IOAPIC (defaults to kernel_irqchip_split = true)
>>  - i8254 PIT
>>  - MC146818 RTC (optional)
>>  - kvmclock (if using KVM)
>>  - fw_cfg
>>  - One ISA serial port (optional)
>>  - Up to eight virtio-mmio devices (configured by the user)
>
> So I assume also no ACPI (CPU/memory hotplug), correct?

Correct.

> @Pankaj, I think it would make sense to make virtio-pmem play with
> virtio-mmio/microvm.

That would be great. I'm also looking forward for virtio-mem (and an
hypothetical virtio-cpu) to eventually gain hotplug capabilities in
microvm.

Thanks,
Sergio.

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