CIRCUITRY AND METHODS FOR IMPLEMENTING NON-REDUNDANT METADATA STORAGE ADDRESSED BY BOUNDED CAPABILITIES

• Main Author: LeMay, Michael
• Format: Patent
• Language: English; French; German
• Published: 28.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

Systems, methods, and apparatuses for implementing non-redundant metadata storage addressed by bounded capabilities are described. In certain examples, a hardware processor core comprises an execution circuit to generate a first memory access request for a first single object in memory by a first capability and a second memory access request for a second different sized single object in the memory by a second capability, wherein a format of each of the first capability and the second capability comprises a single metadata field for access control of a single object in the memory, a bounds field that is to indicate a lower bound and an upper bound of the single object in the memory to which the single metadata field authorizes access, and an address field to indicate an address in the single object that is to be accessed; and a capability management circuit to determine a first location of a corresponding first metadata field in the memory based on the bounds field of the first capability, proceed with the first memory access request in response to a match of metadata in the single metadata field of the first capability against metadata at the corresponding first metadata field in the memory, determine a second location of a corresponding second metadata field in the memory based on the bounds field of the second capability, and proceed with the second memory access request in response to a match of metadata in the single metadata field of the second capability against metadata at the corresponding second metadata field in the memory.