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| author | Dave Kleikamp <shaggy@linux.vnet.ibm.com> | 2008-07-08 00:28:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-09 16:30:45 +1000 |
| commit | aba46c5027cb59d98052231b36efcbbde9c77a1d (patch) | |
| tree | b69dd362c74db562789d14136294c5fcbb7632e7 /include/linux/mm.h | |
| parent | b845f313d78e4e259ec449909e3bbadf77b53a6d (diff) | |
| download | op-kernel-dev-aba46c5027cb59d98052231b36efcbbde9c77a1d.zip op-kernel-dev-aba46c5027cb59d98052231b36efcbbde9c77a1d.tar.gz | |
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>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 586a943..6891844 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -108,6 +108,7 @@ extern unsigned int kobjsize(const void *objp); #define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */ #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ +#define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ #ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */ #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS |
