tree ff1ac82b4edb32fbda14adae78a034f2240ee8bf
parent 5bcca743cb6e3ab97ff400ef92c7f57c787020f6
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1461936324 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1462091533 +1000

IB/qib: Use cache inhibitted and guarded mapping on powerpc

The driver was requesting for a writethrough mapping. But with those
flags we will end up with an SAO mapping because we now have memory
conherence always enabled. ie, the existing mapping will end up with a
WIMG value 0b1110 which is Strong Access Order.

Update this to use cache inhibitted guarded mapping.

Cc: Doug Ledford <dledford@redhat.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>