| /* 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 |
