diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/mm-arch-hooks.h | 13 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 23 |
2 files changed, 35 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/mm-arch-hooks.h b/arch/powerpc/include/asm/mm-arch-hooks.h index 63091a19de9f..f2a2da895897 100644 --- a/arch/powerpc/include/asm/mm-arch-hooks.h +++ b/arch/powerpc/include/asm/mm-arch-hooks.h @@ -12,4 +12,17 @@ #ifndef _ASM_POWERPC_MM_ARCH_HOOKS_H #define _ASM_POWERPC_MM_ARCH_HOOKS_H +static inline void arch_remap(struct mm_struct *mm, + unsigned long old_start, unsigned long old_end, + unsigned long new_start, unsigned long new_end) +{ + /* + * mremap() doesn't allow moving multiple vmas so we can limit the + * check to old_start == vdso_base. + */ + if (old_start == mm->context.vdso_base) + mm->context.vdso_base = new_start; +} +#define arch_remap arch_remap + #endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */ diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 3e5184210d9b..878c27771717 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -8,7 +8,6 @@ #include <linux/spinlock.h> #include <asm/mmu.h> #include <asm/cputable.h> -#include <asm-generic/mm_hooks.h> #include <asm/cputhreads.h> /* @@ -127,5 +126,27 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, #endif } +static inline void arch_dup_mmap(struct mm_struct *oldmm, + struct mm_struct *mm) +{ +} + +static inline void arch_exit_mmap(struct mm_struct *mm) +{ +} + +static inline void arch_unmap(struct mm_struct *mm, + struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + if (start <= mm->context.vdso_base && mm->context.vdso_base < end) + mm->context.vdso_base = 0; +} + +static inline void arch_bprm_mm_init(struct mm_struct *mm, + struct vm_area_struct *vma) +{ +} + #endif /* __KERNEL__ */ #endif /* __ASM_POWERPC_MMU_CONTEXT_H */ |