Method for associating windows to regions for infiniband

A computer program product in a computer readable medium for use in a data processing system, for associating memory windows with memory regions in a data storage system, the computer program product comprising:

• instructions for registering a memory region, wherein the memory region is a set of virtually contiguous memory addresses defined by a virtual address and length;
• instructions for establishing a window reference count for the memory region, wherein the value of the window reference count corresponds to a plurality of memory windows bound to the memory region;
• instructions for binding a first memory window to the memory region and incrementing the value of the window reference count;
• and
• instructions for binding a second memory window to the memory region and incrementing the value of the window reference count.

An apparatus for associating memory windows with memory regions in a data storage system, the apparatus comprising:

• a first register which registers a memory region, wherein the memory region is a set of virtually contiguous memory addresses defined by a virtual address and length;
• a second register which maintains a window reference count for the memory region, wherein the value of the window reference count corresponds to a plurality of memory windows bound to the memory region;
• a first binding component which binds a first memory window to the memory region and increments the value of the window reference count;
• and
• a second binding component which binds a second memory window to the memory region and increments the value of the window reference count.