diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-10-17 13:03:22 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-19 00:56:17 +1100 |
| commit | bde1a1335c5031758d3917d83dd5b85b761bbebd (patch) | |
| tree | 8bdc89846291a7501559739511de07abdda3e100 | |
| parent | b9fb4480a3af85552d88561a2fea9c4d5f54c917 (diff) | |
powerpc/book3e: redefine pte_mkprivileged() and pte_mkuser()
Book3e defines both _PAGE_USER and _PAGE_PRIVILEGED, so the nohash
default pte_mkprivileged() and pte_mkuser() are not usable.
This patch redefines them for book3e.
In theorie, only pte_mkprivileged() needs to be redefined because
_PAGE_USER includes _PAGE_PRIVILEGED, but it is less confusing
to redefine both.
Fixes: a0da4bc166f2 ("powerpc/mm: Allow platforms to redefine some helpers")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/include/asm/nohash/pte-book3e.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/pte-book3e.h b/arch/powerpc/include/asm/nohash/pte-book3e.h index f95ab6eaf441..dd40d200f274 100644 --- a/arch/powerpc/include/asm/nohash/pte-book3e.h +++ b/arch/powerpc/include/asm/nohash/pte-book3e.h @@ -104,5 +104,21 @@ #define PAGE_READONLY __pgprot(_PAGE_BASE | _PAGE_USER) #define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC) +#ifndef __ASSEMBLY__ +static inline pte_t pte_mkprivileged(pte_t pte) +{ + return __pte((pte_val(pte) & ~_PAGE_USER) | _PAGE_PRIVILEGED); +} + +#define pte_mkprivileged pte_mkprivileged + +static inline pte_t pte_mkuser(pte_t pte) +{ + return __pte((pte_val(pte) & ~_PAGE_PRIVILEGED) | _PAGE_USER); +} + +#define pte_mkuser pte_mkuser +#endif /* __ASSEMBLY__ */ + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_NOHASH_PTE_BOOK3E_H */ |