Extract Target Cache Attribute Facility and Instruction Therefore

摘要

A facility and cache machine instruction of a computer architecture for specifying a target cache cache-level and a target cache attribute of interest for obtaining a cache attribute of one or more target caches. The requested cache attribute of the target cache(s) is saved in a register.

主权项

1. A computer implemented method comprising:
executing, by a processor, an extract cache attribute machine instruction defined for a computer architecture, the extract cache attribute machine instruction comprising an opcode for identifying the extract cache attribute machine instruction, the executing comprising: determining a target cache of a hierarchy of target caches based on a cache-level identifier specified by the extract cache attribute machine instruction; extracting an attribute of the target cache; and saving the extracted attribute of the target cache at an extract cache attribute machine instruction specified location.