diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-09-19 12:58:54 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-23 07:54:22 +1000 |
| commit | 6b8cb66a6a7cc182b47da6a0a1d4e5da324c0695 (patch) | |
| tree | 51f28fcbbd1429d65d4a1cc5520e3c9ac83d34ab /arch/powerpc/include/asm/book3s/64/pgtable.h | |
| parent | af2e3a009e7f73c3def283a768ea2cef69ae883e (diff) | |
powerpc: Fix usage of _PAGE_RO in hugepage
On some CPUs like the 8xx, _PAGE_RW hence _PAGE_WRITE is defined
as 0 and _PAGE_RO has to be set when a page is not writable
_PAGE_RO is defined by default in pte-common.h, however BOOK3S/64
doesn't include that file so _PAGE_RO has to be defined explicitly
in book3s/64/pgtable.h
Fixes: a7b9f671f2d14 ("powerpc32: adds handling of _PAGE_RO")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8ec8be9495ba..9fd77f8794a0 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -6,6 +6,8 @@ */ #define _PAGE_BIT_SWAP_TYPE 0 +#define _PAGE_RO 0 + #define _PAGE_EXEC 0x00001 /* execute permission */ #define _PAGE_WRITE 0x00002 /* write access allowed */ #define _PAGE_READ 0x00004 /* read access allowed */ |