Add virtualization support for containers#377
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dcantah merged 1 commit intoapple:mainfrom Jul 30, 2025
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jglogan
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Jul 30, 2025
Sources/ContainerClient/Flags.swift
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| @Flag( | ||
| name: [.customLong("virt")], | ||
| help: | ||
| "Expose virtualization capabilities to the container. (Host must have nested virtualization support, and guest kernel must have virtualization capabilities enabled" |
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Closes apple#376 On supported SoCs virtualization.framework has nested virtualization support, and it's already exposed in Containerization. This exposes a --virtualization flag on create and run to expose this to users here. If the host doesn't support it we'll fail when going to run the container. The guest kernel also must have virtualization enabled, which our default kernel does not. ``` ./bin/container run -it --rm --virtualization ubuntu:latest bash Error: unsupported: "nested virtualization is not supported on the platform" ``` And a successful run with a supplied kernel: ``` ./bin/container run --rm --virtualization -it --kernel ~/Downloads/kernel.arm64 ubuntu:latest sh -c "dmesg | grep kvm" [ 0.017245] kvm [1]: IPA Size Limit: 40 bits [ 0.017499] kvm [1]: GICv3: no GICV resource entry [ 0.017501] kvm [1]: disabling GICv2 emulation [ 0.017506] kvm [1]: GIC system register CPU interface enabled [ 0.017685] kvm [1]: vgic interrupt IRQ9 [ 0.017893] kvm [1]: Hyp mode initialized successfully ```
jglogan
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Jul 30, 2025
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Closes #376
On supported SoCs virtualization.framework has nested virtualization
support, and it's already exposed in Containerization. This exposes
a --virt flag on create and run to expose this to users here. If
the host doesn't support it we'll fail when going to run the container.
The guest kernel also must have virtualization enabled, which our default
kernel does not so one must be supplied.
And a successful run with a supplied kernel: