Power optimized prefetching in set-associative translation lookaside buffer structure

A computer system comprising:

• a processor configured to generate a demand access stream;
• and
• a prefetch engine configured to initiate a first prefetch request based on the demand access stream and perform a first prefetch that includes performing a translation lookaside buffer (TLB) lookup on a TLB structure in response to the first prefetch request,
• wherein the processor determines a TLB entry in response to performing the TLB lookup and performs at least one second prefetch based on the TLB entry without performing a subsequent TLB lookup on the TLB structure.

A computer program product to control a computer processing system to perform prefetching, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by an electronic computer processor to control the computer processing system to perform operations comprising:

• generating a demand access stream;
• initiating a first prefetch request based on the demand access stream and performing a first prefetch that includes performing a translation lookaside buffer (TLB) lookup on a TLB structure in response to the first prefetch request;
• determining a TLB entry in response to performing the TLB lookup;
• and
• performing at least one second prefetch based on the TLB entry without performing a subsequent TLB lookup on the TLB structure.