[linux-2.6-block.git] / arch / powerpc / include / asm / mm-arch-hooks.h

/*
 * 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 */
Commit	Line	Data
2ae416b1 LD	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
83d3f0e9 LD	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
2ae416b1	28	#endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */