Method and system for performing data movement operations with read snapshot and in place write update

A method comprising:

• storing a first data in a first register of a first processor;
• decoding a store instruction by a decoder of the first processor, the store instruction including a source data operand to identify the first register and a destination data operand to identify a first memory address, the first memory address associated with a first cache line in a remote cache which has sole ownership of the first cache line;
• and
• executing the decoded store instruction by execution circuitry of the first processor to generate a write transaction to replace at least a portion of a second data in the first cache line in the remote cache with the first data from the first register to produce an updated first cache line, wherein the remote cache is to retain sole ownership of the first cache line during the write transaction.

A non-transitory machine-readable medium having program code stored thereon which, when executed by one or more machines, causes the machines to perform operation of:

• storing a first data in a first register of a first processor;
• decoding a store instruction by a decoder of the first processor, the store instruction including a source data operand to identify the first register and a destination data operand to identify a first memory address, the first memory address associated with a first cache line in a remote cache which has sole ownership of the first cache line;
• and
• executing the decoded store instruction by execution circuitry of the first processor to generate a write transaction to replace at least a portion of a second data in the first cache line in the remote cache with the first data from the first register to produce an updated first cache line, wherein the remote cache is to retain sole ownership of the first cache line during the write transaction.