Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mohitmishra786/low-level-dev-skills --skill qemu-kvmgit clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mohitmishra786/low-level-dev-skills/qemu-kvm)<a href="https://agentmods.dev/skills/mohitmishra786/low-level-dev-skills/qemu-kvm"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/qemu-kvm/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mohitmishra786/low-level-dev-skills/qemu-kvm"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/qemu-kvm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00083 | $0.01684 |
| Opus 5 | $0.00042 | $0.00842 |
| Sonnet 5 | $0.00017 | $0.00337 |
| Haiku 4.5 | $0.00008 | $0.00168 |
Grade B, and why
qemu-kvm scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
echo 10de 1c03 | sudo tee /sys/bus/pci/drivers/vfio-pci/new_id How it starts
The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
QEMU / KVM
Purpose
Guide agents through QEMU system emulation and KVM acceleration: key qemu-system-x86_64 flags, virtio devices, VFIO device passthrough, QMP monitor protocol, libvirt/virsh management, and QEMU for kernel development with -kernel -initrd -append.
When to Use
- Running Linux VMs with hardware acceleration
- Testing custom kernels without bare metal
- Passing through GPU or NIC to a VM with VFIO
- Managing VMs with libvirt and virsh
- Creating VM snapshots for reproducible testing
- Developing kernel or bootloader with direct kernel boot
Workflow
1. Basic KVM VM
# Check KVM support
egrep -c '(vmx|svm)' /proc/cpuinfo
ls -l /dev/kvm
# Minimal Ubuntu VM
qemu-system-x86_64 \
-enable-kvm \
-cpu host \
-m 4096 \
-smp 4 \
-drive file=ubuntu.img,format=qcow2 \
-netdev user,id=net0 \
-device virtio-net-pci,netdev=net0 \
-display none \
-serial mon:stdio
| Flag | Purpose |
|---|---|
-enable-kvm |
Use KVM acceleration |
-cpu host |
Pass through host CPU features |
-m |
RAM in MB |
-smp |
vCPU count |
-drive |
Disk image |
-netdev / -device |
Network backend |
2. virtio devices
# virtio-blk (paravirtual disk — faster)
-device virtio-blk-pci,drive=hd0 \
-drive if=none,id=hd0,file=disk.qcow2,format=qcow2
# virtio-net
-netdev tap,id=net0,ifname=tap0,script=no,downscript=no \
-device virtio-net-pci,netdev=net0
# virtio-balloon (dynamic memory)
-device virtio-balloon-pci
# virtio-scsi
-device virtio-scsi-pci,id=scsi0 \
-device scsi-hd,drive=hd0,bus=scsi0.0
Always prefer virtio over emulated devices for performance.
3. VFIO device passthrough
# Bind device to vfio-pci
echo 10de 1c03 | sudo tee /sys/bus/pci/drivers/vfio-pci/new_id
sudo virsh nodedev-detach pci_0000_01_00_0
# QEMU with passthrough
qemu-system-x86_64 \
-enable-kvm -m 8192 -smp 8 \
-device vfio-pci,host=01:00.0 \
...
Requires IOMMU enabled (intel_iommu=on or amd_iommu=on in kernel cmdline).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 204 lines · 83 tokens per session scan B 571a215d6136
qemu-kvm is a skill published in the GitHub repository mohitmishra786/low-level-dev-skills (203 stars, last pushed 2mo ago), licensed MIT. It adds 83 tokens to every session and 1,684 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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