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Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine ty
From: |
Paolo Bonzini |
Subject: |
Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type |
Date: |
Tue, 24 Sep 2019 15:10:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
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.
I would say it's inspired by Firecracker only. The NEMU virt machine
had virtio-pci and ACPI.
> +It's main purpose is providing users a minimalist machine type free
> +from the burden of legacy compatibility,
I think this is too strong, especially if you keep the PIC and PIT. :)
Maybe just "It's a minimalist machine type without PCI support designed
for short-lived guests".
> +serving as a stepping stone
> +for future projects aiming at improving boot times, reducing the
> +attack surface and slimming down QEMU's footprint.
"Microvm also establishes a baseline for benchmarking QEMU and operating
systems, since it is optimized for both boot time and 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
Do we need the PIT? And perhaps the PIC even?
Paolo
> + - MC146818 RTC (optional)
> + - kvmclock (if using KVM)
> + - fw_cfg
> + - One ISA serial port (optional)
> + - Up to eight virtio-mmio devices (configured by the user)
> +
- Re: [PATCH v4 2/8] hw/i386: Factorize e820 related functions, (continued)
- [PATCH v4 5/8] fw_cfg: add "modify" functions for all types, Sergio Lopez, 2019/09/24
- [PATCH v4 4/8] hw/i386: split PCMachineState deriving X86MachineState from it, Sergio Lopez, 2019/09/24
- [PATCH v4 6/8] roms: add microvm-bios (qboot) as binary and git submodule, Sergio Lopez, 2019/09/24
- [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/24
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type,
Paolo Bonzini <=
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Paolo Bonzini, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Paolo Bonzini, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Paolo Bonzini, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Paolo Bonzini, 2019/09/25
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Sergio Lopez, 2019/09/26
- Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type, Paolo Bonzini, 2019/09/26