graphic: 0.971 device: 0.867 semantic: 0.819 performance: 0.753 hypervisor: 0.748 x86: 0.685 debug: 0.637 boot: 0.632 virtual: 0.502 user-level: 0.476 PID: 0.433 socket: 0.396 architecture: 0.395 register: 0.379 risc-v: 0.367 i386: 0.339 mistranslation: 0.327 ppc: 0.325 vnc: 0.324 kernel: 0.287 VMM: 0.263 network: 0.257 permissions: 0.254 TCG: 0.189 assembly: 0.174 arm: 0.170 files: 0.154 peripherals: 0.140 KVM: 0.016 Not able to reboot Linux guest on Windows host Description of problem: I am running Linux Mint on Windows, but when I try to reboot the machine, I get the following error: qemu: WHPX: Unexpected VP exit code 4 I did some experiments changing the flags I use when I launch Qemu and I realized that if I set -smp 1 it does not fail. Furthermore, if I set the irqchip to off (kernel-irqchip=off) it does not fail either, but both options do not have good performance at all. I realized too that if I set 4 cores (-smp 4), the error might appear up to 4 times. What seems to be failing then is the APIC emulation that Hyper-V provides. Does anyone know if: 1. Am I missing a flag when launching Qemu? 2. Is it there a patch to solve this? Any leads for solving this problem would be highly appreciated. Steps to reproduce: 1. Install MSYS 2. Open MSYS and run pacman -S mingw-w64-x86_64-qemu 3. Launch Qemu and reboot machine