Can I use the vmm files found on the FreeBSD source code under the dir "vmm" to accelerate qemu on the Radxa Zero 3W / arm64 ?

ZioMario

ZioMario

Hello to everyone,

Today looking at the FreeBSD source code for ARM64,I saw these files :


Screenshot_2026-05-14_14-55-36.png



I have no idea where these files come from and how much good they are. But can I use them for accelerate qemu with vmm ? or for what ?
 
MG said:
Where are those files and what do they have to do with Qemu? I think this is bhyve part.
Click to expand...

ok,but for doing what ? is it bhyve for arm64 ? I never used it yet. I don't have a piece of hardware fully compatible with gicv3. I ask because there is a pending project that accellerate qemu with vmm. I wonder if those files can be useful for achieving that goal.
 
ZioMario said:
ok,but for doing what ? is it bhyve for arm64 ? I never used it yet. I don't have a piece of hardware fully compatible with gicv3. I ask because there is a pending project that accellerate qemu with vmm. I wonder if those files can be useful for achieving that goal.
Click to expand...
It seems to be supported by Qemu now. What does
Code: 
qemu-system-x86_64 -accel help
say after loading the vmm module? It should recognize vmm as available accellerator.
I'm curious about what this improves.
 
Actually I'm using FreeBSD 14.4 and qemu 10.2.2 and I don't see the vmm support :

Code: 
marietto# kldload vmm
kldload: can't load vmm: module already loaded or in kernel

marietto# qemu-system-x86_64 -version
QEMU emulator version 10.2.2

marietto# qemu-system-x86_64 -accel help  
Accelerators supported in QEMU binary:
tcg
 
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