Add aarch64 support across CubeSandbox#256

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Commits on May 21, 2026

deploy/aarch64: add reproducible mvm vmlinux build pipeline
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Commits on May 26, 2026

docker/Dockerfile.builder: support multi-arch builder image
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hypervisor: fix build and runtime regressions on aarch64
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shim: enable aarch64 support for CubeShim
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agent: enable aarch64 support for the guest agent
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cubenet: enable arm64 build for the cubevs eBPF loader
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cubelet: fix image pull and overlay snapshot edge cases
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cubemaster: drop the legacy gomonkey v1 dependency for aarch64
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deploy/guest-image: switch base image to a shared amd64/arm64 one
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deploy/one-click: resolve mkcert binary per host architecture
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deploy/one-click: make container images overridable via env.example
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docs: document initial aarch64 support across deployment guides
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hypervisor: fall back to PMU-less vcpu init on aarch64
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CubeShim: probe vsock as fallback when ready notify is missing
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agent: notify ready after accept loop and harden guest init mounts
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Commits on May 28, 2026

shim: gate x86-only earlyprintk/mitigations cmdline params for aarch64

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cubelet: avoid divide-by-zero in GetDeviceIdleRatio for Btrfs

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network-agent: probe gateway before reading neighbor MAC; defensive os.Exit

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shim: sanitize empty seccomp.defaultAction before oci-spec deserialization

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fix(hypervisor): call start_migration before snapshot to fix VirtioFS resume

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