Using a persistent byte-addressable memory in a compute express link (cxl) memory device for efficient power loss recovery

A system comprising:

• a persistent byte-addressable memory having a data granularity;
• a memory device;
• and
• a processing device, operatively coupled with the persistent byte-addressable memory and the memory device, to perform operations comprising:
• receiving a first host command to write or read user data;
• storing the user data in the persistent byte-addressable memory;
• and
• responsive to determining that the first host command is a compute express link (CXL).mem command and receiving a second host command, transmitting the user data stored in the persistent byte-addressable memory to the memory device.

A method comprising:

• receiving, by a processing device, a host command to write or read user data;
• storing the user data in a persistent byte-addressable memory having a data granularity;
• and
• responsive to determining that the host command is a non-volatile memory express (NVMe) command, transmitting the user data stored in the persistent byte-addressable memory to a memory device.