tree ac7fb58ebad72710e11a385a1d0d5f3c2e54994e
parent bf67472ca1fac19c81367601bd4ba7d17bdc9f6e
author Devesh Sharma <devesh.sharma@emulex.com> 1409925940 +0530
committer Roland Dreier <roland@purestorage.com> 1412959381 -0700

RDMA/ocrdma: Convert kernel VA to PA for mmap in user

In some platforms, when iommu is enabled, the bus address returned by
dma_alloc_coherent is different than the physical address.  ocrdma
should use physical address for mmap-ing the queue memory for the
applications.

This patch adds the use of virt_to_phys() at all such places where
kernel buffer is mapped to user process context.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>