diff options
Diffstat (limited to 'kernel/arch/powerpc/include/asm/mm-arch-hooks.h')
| -rw-r--r-- | kernel/arch/powerpc/include/asm/mm-arch-hooks.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/include/asm/mm-arch-hooks.h b/kernel/arch/powerpc/include/asm/mm-arch-hooks.h new file mode 100644 index 000000000..f2a2da895 --- /dev/null +++ b/kernel/arch/powerpc/include/asm/mm-arch-hooks.h @@ -0,0 +1,28 @@ +/* + * Architecture specific mm hooks + * + * Copyright (C) 2015, IBM Corporation + * Author: Laurent Dufour <ldufour@linux.vnet.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#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 */ |