Fault resilient transaction handling device

A system comprising:

• a memory;
• and
• a device, coupled to the memory and a computing system that hosts one or more guests, to perform operations comprising:
• receiving a request to initiate a transaction involving a direct memory access (DMA) operation to access data associated with at least one of the one or more guests;
• detecting a page fault associated with execution of the DMA operation of the transaction;
• selecting, from a plurality of transaction fault handling protocols, a transaction fault handling protocol that is to be initiated to address the detected page fault;
• and
• causing the selected transaction fault handling protocol to be performed to address the detected page fault.

A non-transitory computer-readable medium storing instructions thereon, wherein the instructions, when executed by a processing device of a computing system that hosts one or more guests, cause the processing device to perform operations comprising:

• receiving a request to initiate a transaction involving a direct memory access (DMA) operation to access data associated with at least one of the one or more guests;
• detecting a page fault associated with execution of the DMA operation of the transaction;
• selecting, from a plurality of transaction fault handling protocols, a transaction fault handling protocol that is to be initiated to address the detected page fault;
• and
• causing the selected transaction fault handling protocol to be performed to address the detected page fault.