Read from memory instructions, processors, methods, and systems, that do not take exception on defective data

A method performed by a processor comprising:

• receiving a read from memory instruction, the read from memory instruction indicating a source memory operand and a destination storage location;
• reading data from the source memory operand, in response to the read from memory instruction;
• storing an indication of defective data in an architecturally visible storage location, when the data is defective, in response to the read from memory instruction;
• and
• completing execution of the read from memory instruction without causing an exceptional condition, when the data is defective, in response to the read from memory instruction.

A system to process instructions comprising:

• an interconnect;
• a processor coupled with the interconnect, the processor to receive a read from memory instruction, the read from memory instruction to indicate a source memory operand and a destination storage location, the processor, in response to the read from memory instruction, to:
• read data from the source memory operand;
• store an indication of defective data in an architecturally visible storage location, when the data is defective;
• and
• complete execution of the read from memory instruction without causing an exceptional condition, when the data is defective;
• and
• a dynamic random access memory (DRAM) coupled with the interconnect, the DRAM storing a set of instructions, the set of instructions, when performed by the system, to cause the system to:
• access the indication of the defective data that is stored in the architecturally visible storage location;
• and
• perform one of replace the data that is defective with non-defective data and fix the data that is defective so that it is not defective.

An article of manufacture comprising a non-transitory machine-readable storage medium, the non-transitory machine-readable storage medium storing a plurality of instructions including a read from memory instruction, the read from memory instruction, if executed by a machine, is to cause the machine to perform operations comprising:

• read data from a source memory operand that is to be indicated by the read from memory instruction, in response to the read from memory instruction;
• store an indication of defective data in an architecturally visible storage location, when the data is defective, in response to the read from memory instruction;
• and
• complete execution of the read from memory instruction without causing an exceptional condition, when the data is defective, in response to the read from memory instruction.