As described earlier, the following access control attributes can be defined for an entire region:
Local read access is always automatically granted.
Enable/disable local write access.
Enable/disable remote write access (requires enabling of local write access as well).
Enable/disable remote read access.
Enable/disable remote atomic operation access (requires enabling of local write access as well).
Enable/disable memory window binding (window binding is described in “Binding a Window To a Region” on page 310).
Assuming that multiple QPs in remote CAs will be accessing various areas of a memory region local to an HCA, it may be desirable that not all of the remote QPs have the same access rights within ...