bb7632e7
parent b845f313d78e4e259ec449909e3bbadf77b53a6d
author Dave Kleikamp <shaggy@linux.vnet.ibm.com> 1215440932 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1215585045 +1000

powerpc/mm: Define flags for Strong Access Ordering

This patch defines:

- PROT_SAO, which is passed into mmap() and mprotect() in the prot field
- VM_SAO in vma->vm_flags, and
- _PAGE_SAO, the combination of WIMG bits in the pte that enables strong
access ordering for the page.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>