Communications support in a transactional memory

A method of supporting Transactional Memory communications between a host device and an endpoint device in a data processing system, the method comprising:

• associating a host transactional memory buffer with the host device, and associated an endpoint transactional memory buffer with the endpoint device;
• using the host transactional memory buffer and the endpoint transactional memory buffer for storing transactions involving the host device and the endpoint device;
• and
• providing a series of commands to synchronize the transactions in the host transactional memory buffer and the endpoint transactional memory buffer, wherein after each successful one of the transactions, identical sets of data associated with said successful one of the transactions, are stored in the host transactional memory buffer associated with the host device and in the endpoint transactional memory buffer associated with the endpoint device store;
• and for each of the transactions that is not successful, the data associated with said each transaction that is not successful, are cancelled from the host transactional memory buffer associated with the host device and from the endpoint transactional memory buffer associated with the endpoint device.

An article of manufacture comprising:

• at least one tangible computer readable medium having computer readable program code logic to execute machine instructions in one or more processing units for supporting Transactional Memory communications between a host device and an endpoint device in a data processing system, said computer readable program code logic, when executing, performing the following:
• associating a host transactional memory buffer with the host device, and associated an endpoint transactional memory buffer with the endpoint device;
• using the host transactional memory buffer and the endpoint transactional memory buffer for storing transactions involving the host device and the endpoint device;
• and
• providing a series of commands to synchronize the transactions in the host transactional memory buffer and the endpoint transactional memory buffer, wherein after each successful one of the transactions, identical sets of data associated with said successful one of the transactions, are stored in the host transactional memory buffer associated with the host device and in the endpoint transactional memory buffer associated with the endpoint device store;
• and for each of the transactions that is not successful, the data associated with said each transaction that is not successful, are cancelled from the host transactional memory buffer associated with the host device and from the endpoint transactional memory buffer associated with the endpoint device.