Peer power control

A processing device comprising:

• a first bus for communicating with a peer processing device;
• and
• a second bus comprising a plurality of control signals, each one of the control signals for communicating with one of an associated plurality of power supplies, wherein each power supply of the plurality of power supplies includes a power branch dedicated to providing power to the peer processing device, each control signal for causing the associated power supply to disable power provided by the power branch to the peer processing device.

A device comprising:

• a pair of power supplies, each power supply of the pair including a pair of power branches;
• a pair of processors coupled to the pair of power supplies, each processor of the pair receiving power from a first power branch of each of the power supplies, and including means for controlling a second power branch of each of the power supplies to disable the provision of power to the other processor of the pair.

A method of resetting a system, the system including a pair of processing devices coupled to at least two power supplies, the method including the steps of:

• notifying a first one the pair of processing devices that the other one of the pair of processing devices is in an unstable state;
• in response to the step of notifying, the first one of the processing devices signaling a power branch in each of the at least two power supplies that is dedicated to the other one of the pair of processing devices to cycle power to the other one of the processing devices further including the step of precluding the first one of the pair of processing devices from erroneously signaling both of the at least two power supplies.