Method and apparatus for bus lock assistance

摘要

A method is described that includes detecting that an instruction of a thread is a locked instruction. The instruction also includes determining that execution of said instruction includes imposing a bus lock. The instruction also include executing a bus lock assistance function in response to said determining, said bus lock assistance function including a function associated with said bus lock other than implementation of a bus lock protocol.

主权项

1. A method comprising:
detecting that a first instruction and a second instruction are locked instructions; determining that execution of the first instruction and the second instruction each include imposing a bus lock; and executing a bus lock assistance function in response to said determining, wherein the bus lock assistance function comprises:
preventing the bus lock from being imposed for the first instruction, andpermitting the bus lock to be imposed for the second instruction and causing a save of state information of an instruction execution pipeline that executes the second instruction.