Cache coherence with functional address apertures

• Main Authors: Turner, Andrew Edmund, Holland, Wesley James, Rychlik, Bohuslav, Liu, Hao
• Format: Patent
• Language: English
• Published: 10.12.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

Systems and methods for managing coherency in a processing system comprising a memory involve one or more aperture cache coherency (ACC) blocks. The ACC blocks monitor accesses to the memory using aliased addresses, wherein the aliased addresses map to locations in an aliased address domain of the memory. The ACC blocks also monitor accesses to the memory through a functional address aperture using aperture addresses, wherein a function of the aperture addresses map to locations in an aperture address domain of the memory. The ACC blocks are further configured to maintain coherency between one or more of data in a first location of the memory, the first location belonging to the aliased address domain and the aperture address domain; one or more copies of the data accessed using the aperture addresses; or one or more copies of the data accessed using the aliased addresses.