virtualbox.org

Hi

I would like to know if VirtualBox supports BTF (single-step on branches), which is a part IA32_DEBUGCTL MSR of newer CPU (Debug Trace and Branch Recording Control). If yes in which mode (VT-x or emulation)?

Kind Regards

Jeff and Joe

VirtualBox is not an emulator, whether or not you use VT-x. Code always executes on the host CPU, and that CPU supports whatever features it supports.

I agree. But still the feature can be allowed / disabled by the hypervisor implementation.

jeffjoe: all types of hardware debug are avail only in VT-x mode.