QEMU support

[sjmiller609]

Note

Introduces a pluggable hypervisor layer and first-class QEMU support, while keeping Cloud Hypervisor working.

• Adds lib/hypervisor abstraction: VMStarter (start/restore) and Hypervisor (control) interfaces; implements Cloud Hypervisor starter and full QEMU implementation (QMP client, args builder, vsock via AF_VSOCK)
• Refactors guest gRPC conn to use VsockDialer (keyed pool), removing CH-specific socket handshake from guest client
• Updates API (exec, cp, instances) to create hypervisor-specific dialers; maps hypervisor type in requests/responses; adds file stat via dialer
• Enhances instances manager: constructor now takes default hypervisor, starts/restores via VMStarter, records hypervisor in logs/traces/metrics, and derives network allocation from stored metadata
• Adds config DEFAULT_HYPERVISOR; warns at startup if QEMU binary not present
• Middleware enriches traces/logs with instance hypervisor
• Extensive tests: new QEMU E2E and unit tests; existing exec/cp/GPU/network/volumes tests updated to use dialers
• go.mod: add QEMU/QMP deps; various imports/indirections adjusted

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[github-actions]

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This PR will update the hypeman SDKs with the following commit message.

feat: QEMU support

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Last updated: 2025-12-23 20:25:33 UTC