Change Details

Windows guest will read MSR_IA32_FEATURE_CONTROL. Bhyve doesn't emulate this MSR. For that reason, bhyve injects a General Protection Fault, which causes the Windows guest to crash. Emulate MSR_IA32_FEATURE_CONTROL to avoid crashes of Windows guests.

Windows guest crashes on boot. It's caused by rdmsr to MSR_IA32_FEATURE_CONTROL. Windows checks this MSR to determine enabled VMX features. Bhyve hasn't implement it yet. For that reason, bhyve injects a GP which causes Windows to crash. This patch returns MSR_IA32_FEATURE_CONTROL with Lock Bit set and VMX disabled to tell Windows that VMX isn't available.

Windows guest will readcrashes on boot. It's caused by rdmsr to MSR_IA32_FEATURE_CONTROL. Bhyve doesn't emulate this MSRWindows checks this MSR to determine enabled VMX features. For that reason,Bhyve hasn't implement it yet. bhyve injects a General Protection FaultFor that reason, bhyve injects a GP which causes the Windows guests to crash. EmulateThis patch returns MSR_IA32_FEATURE_CONTROL to avoid crashes ofwith Lock Bit set and VMX disabled to tell Windows gueststhat VMX isn't available.