Release 4.15 arch/arm/include/asm/mmu.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ARM_MMU_H

#define __ARM_MMU_H

#ifdef CONFIG_MMU

typedef struct {
#ifdef CONFIG_CPU_HAS_ASID
	
atomic64_t	id;
#else
	int		switch_pending;
#endif
	
unsigned int	vmalloc_seq;
	
unsigned long	sigpage;
#ifdef CONFIG_VDSO
	
unsigned long	vdso;
#endif
#ifdef CONFIG_BINFMT_ELF_FDPIC
	
unsigned long	exec_fdpic_loadmap;
	
unsigned long	interp_fdpic_loadmap;
#endif

} mm_context_t;

#ifdef CONFIG_CPU_HAS_ASID

#define ASID_BITS	8

#define ASID_MASK	((~0ULL) << ASID_BITS)

#define ASID(mm)	((unsigned int)((mm)->context.id.counter & ~ASID_MASK))
#else

#define ASID(mm)	(0)
#endif

#else

/*
 * From nommu.h:
 *  Copyright (C) 2002, David McCullough <davidm@snapgear.com>
 *  modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
 */
typedef struct {
	
unsigned long	end_brk;
#ifdef CONFIG_BINFMT_ELF_FDPIC
	
unsigned long	exec_fdpic_loadmap;
	
unsigned long	interp_fdpic_loadmap;
#endif

} mm_context_t;

#endif

#endif
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Directory: arch/arm/include/asm

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