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feat(axvisor): 添加 VM health 查询路径

蒙面好汉睡大觉 requested to merge work/aarch64-vm-health into main

Summary

  • 新增 bounded VM health 模型，覆盖 ConfirmedCrash、RunError、EntryFailure、GuestShutdown、SuspectHang、Idle 和 Running。
  • 在 AxVisor vCPU loop 中记录 host-observed health 事件，并将 pvpanic cooperative report 优先映射为 ConfirmedCrash。
  • 新增 vm health <VM_ID> 查询命令，支持 --format json。
  • 补充 AxVisor 对 axvmconfig 的直接依赖，修复 PR1 FDT 代码中的 EmulatedDeviceType 引用路径。

Validation

  • cargo fmt --check passed
  • cargo build -p axvisor --target aarch64-unknown-none-softfloat -Z build-std=core,alloc --release passed
  • cargo clippy -p axvisor --target aarch64-unknown-none-softfloat -Z build-std=core,alloc --release completed with existing warnings
  • cargo clippy ... -- -D warnings blocked by pre-existing arm_vcpu warnings
  • cargo test -p axvisor health -- --nocapture blocked by AxVisor no-std bin host test harness link error: undefined symbol: main

Notes

  • TODO-2026-05-12-001 is marked In Progress, not Done; final QEMU/integration validation remains for PR3.

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