RHEL5.4+ supports OFED 1.4.1. It updates the kernel with updated IB code, as well as provides the various userland RPMs that using IB and RDMA requires.
A quick look at the just-released RHEL6 beta1 kernel rpm doesn't seem to reveal any ofed patches. Please carry forward (or upgrade) the support from 5.4.
duplicate of bug 463454, please close.
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release. Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release. This request is not yet committed for
*** This bug has been marked as a duplicate of bug 463454 ***