Object and cacheline granularity cryptographic memory integrity

A machine-readable storage medium including instructions that, when executed by one or more processors, causes the one or more processors to:

• receive a first request to perform a memory access operation for an address range in a memory allocation;
• determine a location of a metadata region within a cacheline that includes at least some of the address range;
• identify a first portion of the cacheline based at least in part on a first data bounds value stored in the metadata region;
• generate a first integrity value based on the first portion of the cacheline;
• and
• prevent the memory access operation in response to determining that the first integrity value does not correspond to a second integrity value stored in the metadata region.

A method comprising:

• receiving a first request to perform a memory access operation for an address range in a memory allocation of memory circuitry;
• determining a location of a metadata region within a cacheline that includes at least some of the address range;
• identifying a first portion of the cacheline based at least in part on a first data bounds value stored in the metadata region;
• generating a first integrity value based on the first portion of the memory allocation;
• and
• allowing the memory access operation to continue in response to determining that the first integrity value corresponds to a second integrity value stored in the metadata region.

A processor, comprising circuitry to:

• receive a first request associated with an application to perform a store operation for an address range in a memory allocation of memory;
• receive a cacheline corresponding to at least part of the address range in the memory allocation;
• store first buffered contents in the cacheline corresponding to a first memory address of the address range;
• determine a location of a metadata region within the cacheline;
• identify a first portion of the cacheline based at least in part on a first data bounds value stored in the metadata region;
• generate a first integrity value based on the first portion of the cacheline, the first portion including the first buffered contents stored in the cacheline;
• and
• store the first integrity value in the metadata region of the cacheline.