Guidelines for instruction encoding in the NOP space

1 · Red Hat · July 29, 2019, 7:17 a.m.
More and more CPUs implement new features with instructions that are executed as NOPs (no-operation instructions) on previous CPU generations. This results in some challenges for operating system builders, particularly in the area of legacy software support. An instruction that can be ignored completely by some CPUs does not seem useful, but it turns out […] The post Guidelines for instruction encoding in the NOP space appeared first on Red Hat Developer Blog....