Memory device firmware update and activation without memory access quiescence

A method of updating firmware for a persistent memory module in a computing system comprising:

• copying a new version of persistent memory module firmware into an available area of random-access memory (RAM) in the persistent memory module;
• transferring processing of a current version of persistent memory module firmware to the new version of persistent memory module firmware during runtime of the computing system, without a reset of the computing system and without quiesce of access to persistent memory media in the persistent memory module, while continuing to perform critical event handling by the current version of persistent memory module firmware;
• initializing the new version of persistent memory module firmware;
• and
• transferring processing of critical event handling from the current version of persistent memory module firmware to the new version of persistent memory module firmware when initializing the new version of persistent memory module firmware is completed.

At least one tangible machine-readable non-transitory medium comprising a plurality of instructions that in response to being executed by a processor cause the processor to:

• copy a new version of persistent memory module firmware into an available area of random-access memory (RAM) in the persistent memory module;
• transfer processing of a current version of persistent memory module firmware to the new version of persistent memory module firmware during runtime of the computing system, without a reset of the computing system and without quiesce of access to persistent memory media in the persistent memory module, while continuing to perform critical event handling by the current version of persistent memory module firmware;
• initialize the new version of persistent memory module firmware;
• and
• transfer processing of critical event handling from the current version of persistent memory module firmware to the new version of persistent memory module firmware when initializing the new version of persistent memory module firmware is completed.