Soft post package repair function validation

A system comprising:

• a processor;
• a memory device;
• and
• a memory control configured to interface with the processor and memory device to perform a plurality of operations comprising:
• performing a validation of a soft post package repair (sPPR) function of the memory device, the validation comprising:
• writing a first pattern to a first target row of a bank group of the memory device;
• executing the sPPR function on the first target row to change a mapping of the first target row to a spare row of the memory device and divert a subsequent memory access request targeting the first target row to the spare row;
• reading the first target row to confirm that data read from a memory row mapped to the first target row is a mismatch to the first pattern;
• writing a second pattern to the first target row;
• executing the sPPR function on a second target row of the bank group to change a mapping of the second target row to the spare row and restore the mapping of the first target row;
• reading the first target row to confirm the first pattern and restoration of the mapping of the first target row from the spare row;
• and
• reading the second target row to confirm the second pattern and remapping of the second target row to the spare row;
• and
• reporting a result of the validation.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by processing circuitry to perform a plurality of operations comprising:

• performing a validation of a soft post package repair (sPPR) function of a memory device, the validation comprising:
• writing a first pattern to a first target row of a bank group of the memory device;
• executing the sPPR function on the first target row to change a mapping of the first target row to a spare row of the memory device and divert a subsequent memory access request targeting the first target row to the spare row;
• reading the first target row to confirm that data read from a memory row mapped to the first target row is a mismatch to the first pattern;
• writing a second pattern to the first target row;
• executing the sPPR function on a second target row of the bank group to change a mapping of the second target row to the spare row and restore the mapping of the first target row;
• reading the first target row to confirm the first pattern and restoration of the mapping of the first target row from the spare row;
• and
• reading the second target row to confirm the second pattern and remapping of the second target row to the spare row;
• and
• reporting a result of the validation.