If you software has no bugs then unikernels are a straight upgrade. If your software has bugs then the blast area for issues is now much larger. When was the last time you needed a kernel debugger for a misbehaving application?
A kernel debugger isn't magic; it's just a debugger (e.g. GDB). Debugging a VM is similar to debugging a process.
A kernel debugger isn't magic; it's just a debugger (e.g. GDB). Debugging a VM is similar to debugging a process.