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-for-kernel-developmentgit 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-for-kernel-development)<a href="https://agentmods.dev/skills/mohitmishra786/low-level-dev-skills/qemu-for-kernel-development"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/qemu-for-kernel-development/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-for-kernel-development"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/qemu-for-kernel-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00078 | $0.00952 |
| Opus 5 | $0.00039 | $0.00476 |
| Sonnet 5 | $0.00016 | $0.00190 |
| Haiku 4.5 | $0.00008 | $0.00095 |
Grade A, and why
qemu-for-kernel-development scanned grade A with 0 findings 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
QEMU for Kernel Development
Purpose
Guide agents through QEMU-based kernel and driver development workflows: building/booting custom kernels, attaching virtio block/network, using Buildroot or minimal initramfs, and rapid module test cycles — focused on kernel dev vs general skills/virtualization/qemu-kvm.
When to Use
- Test kernel patch without bare metal
- Develop driver against virtio or emulated DT platform
- CI kernel boot smoke test
- NFS or 9p root for fast edit-compile-test
Workflow
1. Minimal direct kernel boot (arm64 virt)
qemu-system-aarch64 \
-machine virt -cpu cortex-a57 -smp 4 -m 2G \
-kernel arch/arm64/boot/Image \
-append "console=ttyAMA0 root=/dev/vda rw" \
-drive if=virtio,file=rootfs.ext4,format=raw \
-netdev user,id=net0 -device virtio-net-device,netdev=net0 \
-nographic
x86_64:
qemu-system-x86_64 -enable-kvm -m 4G -smp 4 \
-kernel arch/x86/boot/bzImage \
-append "console=ttyS0 root=/dev/vda rw" \
-drive file=rootfs.img,format=raw,if=virtio \
-nographic
2. Buildroot rootfs loop
cd buildroot
make qemu_aarch64_virt_defconfig
make
# output/images/Image, rootfs.ext4
Integrate custom kernel: set BR2_LINUX_KERNEL_CUSTOM_VERSION or external tree.
3. Out-of-tree module test
# on host — cross build
make -C $KERNEL_SRC M=$PWD modules
# in guest or via initramfs
insmod mydriver.ko
dmesg | tail
Share tree with 9p:
-fsdev local,id=dev,path=$PWD,security_model=none \
-device virtio-9p-pci,fsdev=dev,mount_tag=hostshare
# guest: mount -t 9p -o trans=virtio hostshare /mnt
4. GDB stub for kernel
qemu-system-aarch64 ... -s -S
gdb vmlinux
(gdb) target remote :1234
(gdb) break start_kernel
Use CONFIG_KGDB for live kernel debugging after boot.
5. Device tree overrides
qemu-system-aarch64 -machine virt -dtb myboard.dtb ...
virt machine provides virtio devices; platform drivers can target QEMU -device models.
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 · 113 lines · 78 tokens per session scan A cc038b7526a4
qemu-for-kernel-development is a skill published in the GitHub repository mohitmishra786/low-level-dev-skills (203 stars, last pushed 2mo ago), licensed MIT. It adds 78 tokens to every session and 952 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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