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| author |  Christophe Leroy <christophe.leroy@c-s.fr>
| 2018-10-09 13:52:14 +0000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2018-10-14 18:04:09 +1100 |
| commit | cbcbbf4afd6d38272bf0119d890caa5ebba6fe4c (patch) | |
| tree | c1e36632154145e015b021ba51d1215fb9c7a01e /arch/powerpc/include/asm/nohash/32/pte-8xx.h | |
| parent | powerpc/mm: Allow platforms to redefine some helpers (diff) | |
| download | linux-cbcbbf4afd6d38272bf0119d890caa5ebba6fe4c.tar.gz linux-cbcbbf4afd6d38272bf0119d890caa5ebba6fe4c.tar.bz2 linux-cbcbbf4afd6d38272bf0119d890caa5ebba6fe4c.zip | |
powerpc/mm: Define platform default caches related flags
Cache related flags like _PAGE_COHERENT and _PAGE_WRITETHRU
are defined on most platforms. The platforms not defining
them don't define any alternative. So we can give them a NUL
value directly for those platforms directly.
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/nohash/32/pte-8xx.h')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/pte-8xx.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h b/arch/powerpc/include/asm/nohash/32/pte-8xx.h index b899c3c877ac..2b4669b3badb 100644 --- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h @@ -46,6 +46,10 @@ #define _PAGE_NA 0x0200 /* Supervisor NA, User no access */ #define _PAGE_RO 0x0600 /* Supervisor RO, User no access */ +/* cache related flags non existing on 8xx */ +#define _PAGE_COHERENT 0 +#define _PAGE_WRITETHRU 0 + #define _PAGE_KERNEL_RO (_PAGE_PRIVILEGED | _PAGE_RO) #define _PAGE_KERNEL_ROX (_PAGE_PRIVILEGED | _PAGE_RO | _PAGE_EXEC) #define _PAGE_KERNEL_RW (_PAGE_PRIVILEGED | _PAGE_DIRTY) |