Parallel mapping of client partition memory to multiple physical adapters

A computer readable storage medium storing instructions, which, when executed on a processor, performs an input/output (I/O) request, the operation comprising:

• mapping an address for at least a first page associated with a virtual I/O request to an entry in a virtual TCE table;
• identifying a plurality of physical adapters required to service the virtual I/O request;
• for each of the identified physical adapters, mapping the entry in the virtual TCE table to an entry in the respective physical TCE table corresponding to the physical adapter;
• and
• in parallel, issuing a physical I/O requests to the physical adapters.

A system, comprising:

• a processor;
• a memory;
• a hypervisor hosting a server guest operating systems (OS) and one or more guest operating systems, which, when executed on the processor, is configured to perform an operation, comprising:
• mapping an address for at least a first page associated with a virtual input output (I/O) request to an entry in a virtual TCE table,
• identifying a plurality of physical adapters required to service the virtual I/O request,
• for each of the identified physical adapters, mapping the entry in the virtual TCE table to an entry in the respective physical TCE table corresponding to the physical adapter, and
• in parallel, issuing a physical I/O requests to the physical adapters.