Implementing shared adapter configuration updates concurrent with maintenance actions in a virtualized system

A system for implementing concurrent shared adapter configuration updates with maintenance actions for an input/output (I/O) adapter in a computer system comprising:

• a processor;
• a hypervisor managing functions associated with the I/O adapter;
• said processor using said hypervisor to perform the steps of:
• decoupling configuration of the adapter from a saved configuration state of the adapter during a recovery period;
• responsive to receiving a configuration request, validating the received configuration request;
• responsive to a valid configuration request, updating the saved configuration state;
• and
• responsive to the adapter completing recovery, restoring the adapter to the updated saved configuration state.