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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-10-09 13:52:02 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-14 18:04:09 +1100 |
| commit | f4805785f068a29f3be757d837cfc05903a8afe8 (patch) | |
| tree | 83e737d38d34aed4e82bd188761778dc05ed7de2 /arch/powerpc/include/asm/pgtable.h | |
| parent | 093d7ca22920c79ecdda87614ac4c5e3786068d6 (diff) | |
| download | lwn-f4805785f068a29f3be757d837cfc05903a8afe8.tar.gz lwn-f4805785f068a29f3be757d837cfc05903a8afe8.zip | |
powerpc/mm: move __P and __S tables in the common pgtable.h
__P and __S flags are the same for all platform and should remain
as is in the future, so avoid duplication.
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/pgtable.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 14c79a7dc855..fb4b85bba110 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -20,6 +20,25 @@ struct mm_struct; #include <asm/nohash/pgtable.h> #endif /* !CONFIG_PPC_BOOK3S */ +/* Note due to the way vm flags are laid out, the bits are XWR */ +#define __P000 PAGE_NONE +#define __P001 PAGE_READONLY +#define __P010 PAGE_COPY +#define __P011 PAGE_COPY +#define __P100 PAGE_READONLY_X +#define __P101 PAGE_READONLY_X +#define __P110 PAGE_COPY_X +#define __P111 PAGE_COPY_X + +#define __S000 PAGE_NONE +#define __S001 PAGE_READONLY +#define __S010 PAGE_SHARED +#define __S011 PAGE_SHARED +#define __S100 PAGE_READONLY_X +#define __S101 PAGE_READONLY_X +#define __S110 PAGE_SHARED_X +#define __S111 PAGE_SHARED_X + #ifndef __ASSEMBLY__ #include <asm/tlbflush.h> |