Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5270 | serge | 1 | #ifndef _ASM_X86_PAGE_32_DEFS_H |
| 2 | #define _ASM_X86_PAGE_32_DEFS_H |
||
| 3 | |||
| 4 | #include |
||
| 5 | |||
| 6 | /* |
||
| 7 | * This handles the memory map. |
||
| 8 | * |
||
| 9 | * A __PAGE_OFFSET of 0xC0000000 means that the kernel has |
||
| 10 | * a virtual address space of one gigabyte, which limits the |
||
| 11 | * amount of physical memory you can use to about 950MB. |
||
| 12 | * |
||
| 13 | * If you want more physical memory than this then see the CONFIG_HIGHMEM4G |
||
| 14 | * and CONFIG_HIGHMEM64G options in the kernel configuration. |
||
| 15 | */ |
||
| 16 | #define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) |
||
| 17 | |||
| 18 | #define __START_KERNEL_map __PAGE_OFFSET |
||
| 19 | |||
| 20 | #define THREAD_SIZE_ORDER 1 |
||
| 21 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) |
||
| 22 | |||
| 23 | #define DOUBLEFAULT_STACK 1 |
||
| 24 | #define NMI_STACK 0 |
||
| 25 | #define DEBUG_STACK 0 |
||
| 26 | #define MCE_STACK 0 |
||
| 27 | #define N_EXCEPTION_STACKS 1 |
||
| 28 | |||
| 29 | #ifdef CONFIG_X86_PAE |
||
| 30 | /* 44=32+12, the limit we can fit into an unsigned long pfn */ |
||
| 31 | #define __PHYSICAL_MASK_SHIFT 44 |
||
| 32 | #define __VIRTUAL_MASK_SHIFT 32 |
||
| 33 | |||
| 34 | #else /* !CONFIG_X86_PAE */ |
||
| 35 | #define __PHYSICAL_MASK_SHIFT 32 |
||
| 36 | #define __VIRTUAL_MASK_SHIFT 32 |
||
| 37 | #endif /* CONFIG_X86_PAE */ |
||
| 38 | |||
| 39 | /* |
||
| 40 | * Kernel image size is limited to 512 MB (see in arch/x86/kernel/head_32.S) |
||
| 41 | */ |
||
| 42 | #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) |
||
| 43 | |||
| 44 | #ifndef __ASSEMBLY__ |
||
| 45 | |||
| 46 | /* |
||
| 47 | * This much address space is reserved for vmalloc() and iomap() |
||
| 48 | * as well as fixmap mappings. |
||
| 49 | */ |
||
| 50 | extern unsigned int __VMALLOC_RESERVE; |
||
| 51 | extern int sysctl_legacy_va_layout; |
||
| 52 | |||
| 53 | extern void find_low_pfn_range(void); |
||
| 54 | extern void setup_bootmem_allocator(void); |
||
| 55 | |||
| 56 | #endif /* !__ASSEMBLY__ */ |
||
| 57 | |||
| 58 | #endif /* _ASM_X86_PAGE_32_DEFS_H */ |