Patent ID: 9715352
Date: 2017-07-25
CPC Classifications: G06F

Claim:
1. A computer program product, the computer program product comprising a computer readable storage medium having program instructions for accessing data located on peripheral devices using synchronous input/output (I/O) embodied therewith, the program instructions executable by a processor to cause the processor to perform: transmitting, by firmware located on a processor, a synchronous I/O command to a persistent storage control unit (SCU), content of the synchronous I/O command based on a synchronous I/O request received by the firmware from an operating system (OS) executing on the processor, wherein a unit of work in the OS corresponding to the synchronous I/O request remains active by not being un-dispatched or re-dispatched at least until the synchronous I/O request is completed; and based on an operation code of the synchronous I/O command specifying a synchronous read operation: based on the operation code specifying a synchronous write operation: