Transient cache storage with discard function for disposable data

A processor comprising:

• first determining logic, wherein the first determining logic determines that a cache line of information should be removed from a cache;
• mapping logic, wherein the mapping logic applies an index function to an address associated with the cache line of information to map the cache line of information to a location in the cache;
• second determining logic, wherein the second determining logic determines whether the cache line of information has been designated as transient storage;
• conditional preserving logic, wherein the conditional preserving logic preserves the cache line of information in main memory only if it is determined that the cache line of information has not been designated as transient storage;
• and
• wherein the cache line of information is designated as transient storage via an inclusion of at least one control bit in an address associated with the cache line of information.

A computer program product in a computer-readable storage medium, comprising functional descriptive material that, when executed by a computer, causes the computer to perform actions that include:

• determining that a cache line of information should be removed from a cache;
• accessing a transient storage via a mapping of the transient storage into a virtual address space in a virtual memory system;
• determining whether the cache line of information has been designated as transient storage;
• preserving the cache line of information in main memory only if it is determined that the cache line of information has not been designated as transient storage;
• and
• wherein the cache line of information is designated as transient storage via an inclusion of at least one control bit in an address associated with the cache line of information.