Performance optimized congruence class matching for multiple concurrent radix translations

A computer program product for optimized congruence class matching for concurrent memory translation requests to avoid memory access conflicts with respect to a virtual memory managed by a processor, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause:

• initiating, by the processor, a first table walk by a first memory access of the concurrent memory translation requests;
• pending, by the processor, a subsequent table walk initiated by a subsequent memory access of the concurrent memory translation requests;
• determining, by the processor, whether the subsequent table walk will cause a memory access conflict with the first table walk based on the optimized congruence class matching;
• and
• rejecting, by the processor, the subsequent memory access when the subsequent table walk will cause the memory access conflict with the first table walk.

A system comprising a processor and a memory storing program instructions thereon, the memory further supporting a virtual memory, the program instructions for optimized congruence class matching for concurrent memory translation requests to avoid memory access conflicts with respect to the virtual memory managed by the processor, the program instructions executable to cause:

• initiating, by the processor, a first table walk by a first memory access of the concurrent memory translation requests;
• pending, by the processor, a subsequent table walk initiated by a subsequent memory access of the concurrent memory translation requests;
• determining, by the processor, whether the subsequent table walk will cause a memory access conflict with the first table walk based on the optimized congruence class matching;
• and
• rejecting, by the processor, the subsequent memory access when the subsequent table walk will cause the memory access conflict with the first table walk.