1/*
 2 * Architecture specific mm hooks
 3 *
 4 * Copyright (C) 2015, IBM Corporation
 5 * Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
 6 *
 7 * This program is free software; you can redistribute it and/or modify
 8 * it under the terms of the GNU General Public License version 2 as
 9 * published by the Free Software Foundation.
10 */
11
12#ifndef _ASM_POWERPC_MM_ARCH_HOOKS_H
13#define _ASM_POWERPC_MM_ARCH_HOOKS_H
14
15static inline void arch_remap(struct mm_struct *mm,
16			      unsigned long old_start, unsigned long old_end,
17			      unsigned long new_start, unsigned long new_end)
18{
19	/*
20	 * mremap() doesn't allow moving multiple vmas so we can limit the
21	 * check to old_start == vdso_base.
22	 */
23	if (old_start == mm->context.vdso_base)
24		mm->context.vdso_base = new_start;
25}
26#define arch_remap arch_remap
27
28#endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */