diff options
| author | Christophe Leroy | 2018-10-09 15:52:12 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2018-10-14 09:04:09 +0200 |
| commit | a0da4bc166f21d88400ec91e01b815054561804e (patch) | |
| tree | d51c133ef5b51cf601412bcbf7bde36833d84ee6 /arch/powerpc/include/asm/pte-common.h | |
| parent | powerpc/nohash/64: do not include pte-common.h (diff) | |
| download | kernel-qcow2-linux-a0da4bc166f21d88400ec91e01b815054561804e.tar.gz kernel-qcow2-linux-a0da4bc166f21d88400ec91e01b815054561804e.tar.xz kernel-qcow2-linux-a0da4bc166f21d88400ec91e01b815054561804e.zip | |
powerpc/mm: Allow platforms to redefine some helpers
The 40xx defines _PAGE_HWWRITE while others don't.
The 8xx defines _PAGE_RO instead of _PAGE_RW.
The 8xx defines _PAGE_PRIVILEGED instead of _PAGE_USER.
The 8xx defines _PAGE_HUGE and _PAGE_NA while others don't.
Lets those platforms redefine pte_write(), pte_wrprotect() and
pte_mkwrite() and get _PAGE_RO and _PAGE_HWWRITE off the common
helpers.
Lets the 8xx redefine pte_user(), pte_mkprivileged() and pte_mkuser()
and get rid of _PAGE_PRIVILEGED and _PAGE_USER default values.
Lets the 8xx redefine pte_mkhuge() and get rid of
_PAGE_HUGE default value.
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/pte-common.h')
| -rw-r--r-- | arch/powerpc/include/asm/pte-common.h | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/arch/powerpc/include/asm/pte-common.h b/arch/powerpc/include/asm/pte-common.h index 4d594039bca5..1a2102f8b1e7 100644 --- a/arch/powerpc/include/asm/pte-common.h +++ b/arch/powerpc/include/asm/pte-common.h @@ -5,36 +5,12 @@ * Some bits are only used on some cpu families... Make sure that all * the undefined gets a sensible default */ -#ifndef _PAGE_HWWRITE -#define _PAGE_HWWRITE 0 -#endif #ifndef _PAGE_COHERENT #define _PAGE_COHERENT 0 #endif #ifndef _PAGE_WRITETHRU #define _PAGE_WRITETHRU 0 #endif -/* _PAGE_RO and _PAGE_RW shall not be defined at the same time */ -#ifndef _PAGE_RO -#define _PAGE_RO 0 -#else -#define _PAGE_RW 0 -#endif - -/* At least one of _PAGE_PRIVILEGED or _PAGE_USER must be defined */ -#ifndef _PAGE_PRIVILEGED -#define _PAGE_PRIVILEGED 0 -#else -#ifndef _PAGE_USER -#define _PAGE_USER 0 -#endif -#endif -#ifndef _PAGE_NA -#define _PAGE_NA 0 -#endif -#ifndef _PAGE_HUGE -#define _PAGE_HUGE 0 -#endif /* Location of the PFN in the PTE. Most 32-bit platforms use the same * as _PAGE_SHIFT here (ie, naturally aligned). |