Dynamic array masking

A computer program product for dynamic array masking, the computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform:

• during execution, by the processor, of computer instructions that access a cache memory:
• detecting an error condition in a portion of the cache memory, the portion of the cache memory containing an array macro,
• dynamically setting mask bits to indicate the error condition in the portion of the cache memory, and
• preventing subsequent writes to the portion of the cache memory in accordance with the dynamically set mask bits;
• and
• evicting cache entries from the portion of the cache memory, the evicting including performing a cache purge operation for the cache entries corresponding to the dynamically set mask bits.

A system for dynamic array masking, the system comprising:

• a memory having computer readable instructions;
• and
• a processor for executing the computer readable instructions, the computer readable instructions causing the processor to perform:
• during execution, by the processor, of computer instructions that access a cache memory:
• detecting an error condition in a portion of the cache memory, the portion of the cache memory containing an array macro,
• dynamically setting mask bits to indicate the error condition in the portion of the cache memory, and
• preventing subsequent writes to the portion of the cache memory in accordance with the dynamically set mask bits;
• and
• evicting cache entries from the portion of the cache memory, the evicting including performing a cache purge operation for the cache entries corresponding to the dynamically set mask bits.