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How to initiate power-off in quest with new microvm machine type


From: Waldek Kozaczuk
Subject: How to initiate power-off in quest with new microvm machine type
Date: Tue, 12 Nov 2019 07:28:24 -0500

Hi,

I am referring to the machine type described here - https://github.com/qemu/qemu/blob/master/docs/microvm.rst. I would like to know how to initiate power-off sequence from a guest given that ACPI is not available. On firecracker the only way is generating Ctrl-Alt-Del keyboard event by writing proper value to the keyboard controller port 0xfe like so:

outb(0x64, 0xfe);

What is the corresponding mechanism on QEMU with microvm machine?

Thanks in advance,
Waldek

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