| 1 |
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| 2 | #ifndef _ASM_POWERPC_TASK_SIZE_32_H
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| 3 | #define _ASM_POWERPC_TASK_SIZE_32_H
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| 4 |
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| 5 | #include <linux/sizes.h>
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| 6 |
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| 7 | #if CONFIG_TASK_SIZE > CONFIG_KERNEL_START
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| 8 | #error User TASK_SIZE overlaps with KERNEL_START address
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| 9 | #endif
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| 10 |
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| 11 | #ifdef CONFIG_PPC_8xx
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| 12 | #define MODULES_END ASM_CONST(CONFIG_PAGE_OFFSET)
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| 13 | #define MODULES_SIZE (CONFIG_MODULES_SIZE * SZ_1M)
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| 14 | #define MODULES_VADDR (MODULES_END - MODULES_SIZE)
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| 15 | #define MODULES_BASE (MODULES_VADDR & ~(UL(SZ_4M) - 1))
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| 16 | #define USER_TOP (MODULES_BASE - SZ_4M)
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| 17 | #endif
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| 18 |
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| 19 | #ifdef CONFIG_PPC_BOOK3S_32
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| 20 | #define MODULES_END (ASM_CONST(CONFIG_PAGE_OFFSET) & ~(UL(SZ_256M) - 1))
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| 21 | #define MODULES_SIZE (CONFIG_MODULES_SIZE * SZ_1M)
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| 22 | #define MODULES_VADDR (MODULES_END - MODULES_SIZE)
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| 23 | #define MODULES_BASE (MODULES_VADDR & ~(UL(SZ_256M) - 1))
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| 24 | #define USER_TOP (MODULES_BASE - SZ_4M)
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| 25 | #endif
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| 26 |
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| 27 | #ifndef USER_TOP
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| 28 | #define USER_TOP ((ASM_CONST(CONFIG_PAGE_OFFSET) - SZ_128K) & ~(UL(SZ_128K) - 1))
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| 29 | #endif
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| 30 |
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| 31 | #if CONFIG_TASK_SIZE < USER_TOP
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| 32 | #define TASK_SIZE ASM_CONST(CONFIG_TASK_SIZE)
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| 33 | #else
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| 34 | #define TASK_SIZE USER_TOP
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| 35 | #endif
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| 36 |
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| 37 | |
| 38 | * This decides where the kernel will search for a free chunk of vm space during
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| 39 | * mmap's.
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| 40 |
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| 41 | #define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
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| 42 |
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| 43 | #define DEFAULT_MAP_WINDOW TASK_SIZE
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| 44 | #define STACK_TOP TASK_SIZE
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| 45 | #define STACK_TOP_MAX STACK_TOP
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| 46 |
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| 47 | #endif
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