1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Architecture specific mm hooks 4 * 5 * Copyright (C) 2015, IBM Corporation 6 * Author: Laurent Dufour <ldufour@linux.vnet.ibm.com> 7 */ 8 9 #ifndef _ASM_POWERPC_MM_ARCH_HOOKS_H 10 #define _ASM_POWERPC_MM_ARCH_HOOKS_H 11 arch_remap(struct mm_struct * mm,unsigned long old_start,unsigned long old_end,unsigned long new_start,unsigned long new_end)12static inline void arch_remap(struct mm_struct *mm, 13 unsigned long old_start, unsigned long old_end, 14 unsigned long new_start, unsigned long new_end) 15 { 16 /* 17 * mremap() doesn't allow moving multiple vmas so we can limit the 18 * check to old_start == vdso_base. 19 */ 20 if (old_start == mm->context.vdso_base) 21 mm->context.vdso_base = new_start; 22 } 23 #define arch_remap arch_remap 24 25 #endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */ 26