arch/powerpc/include/asm/mm-arch-hooks.h

   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
  15 static 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 */