Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 1 | #ifndef _ASM_X86_PAGE_64_DEFS_H |
| 2 | #define _ASM_X86_PAGE_64_DEFS_H |
| 3 | |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 4 | #define THREAD_ORDER 1 |
| 5 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) |
| 6 | #define CURRENT_MASK (~(THREAD_SIZE - 1)) |
| 7 | |
| 8 | #define EXCEPTION_STACK_ORDER 0 |
| 9 | #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) |
| 10 | |
| 11 | #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) |
| 12 | #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) |
| 13 | |
| 14 | #define IRQ_STACK_ORDER 2 |
| 15 | #define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) |
| 16 | |
| 17 | #define STACKFAULT_STACK 1 |
| 18 | #define DOUBLEFAULT_STACK 2 |
| 19 | #define NMI_STACK 3 |
| 20 | #define DEBUG_STACK 4 |
| 21 | #define MCE_STACK 5 |
| 22 | #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ |
| 23 | |
| 24 | #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) |
| 25 | #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) |
| 26 | |
| 27 | /* |
| 28 | * Set __PAGE_OFFSET to the most negative possible address + |
| 29 | * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a |
| 30 | * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's |
| 31 | * what Xen requires. |
| 32 | */ |
| 33 | #define __PAGE_OFFSET _AC(0xffff880000000000, UL) |
| 34 | |
H. Peter Anvin | c4f6823 | 2009-05-12 11:37:34 -0700 | [diff] [blame] | 35 | #define __PHYSICAL_START ((CONFIG_PHYSICAL_START + \ |
| 36 | (CONFIG_PHYSICAL_ALIGN - 1)) & \ |
| 37 | ~(CONFIG_PHYSICAL_ALIGN - 1)) |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 38 | |
| 39 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
| 40 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) |
| 41 | |
Rik van Riel | c898faf | 2009-05-05 17:28:56 -0400 | [diff] [blame] | 42 | /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 43 | #define __PHYSICAL_MASK_SHIFT 46 |
Linus Torvalds | 9063c61 | 2009-06-20 15:40:00 -0700 | [diff] [blame] | 44 | #define __VIRTUAL_MASK_SHIFT 47 |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 45 | |
| 46 | /* |
| 47 | * Kernel image size is limited to 512 MB (see level2_kernel_pgt in |
| 48 | * arch/x86/kernel/head_64.S), and it is mapped here: |
| 49 | */ |
| 50 | #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) |
| 51 | #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) |
| 52 | |
| 53 | #ifndef __ASSEMBLY__ |
| 54 | void clear_page(void *page); |
| 55 | void copy_page(void *to, void *from); |
| 56 | |
| 57 | /* duplicated to the one in bootmem.h */ |
| 58 | extern unsigned long max_pfn; |
| 59 | extern unsigned long phys_base; |
| 60 | |
| 61 | extern unsigned long __phys_addr(unsigned long); |
| 62 | #define __phys_reloc_hide(x) (x) |
| 63 | |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 64 | #define vmemmap ((struct page *)VMEMMAP_START) |
| 65 | |
Jeremy Fitzhardinge | 51c78eb | 2009-02-08 22:52:14 -0800 | [diff] [blame] | 66 | extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); |
| 67 | extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); |
| 68 | |
| 69 | #endif /* !__ASSEMBLY__ */ |
| 70 | |
| 71 | #ifdef CONFIG_FLATMEM |
| 72 | #define pfn_valid(pfn) ((pfn) < max_pfn) |
| 73 | #endif |
| 74 | |
| 75 | #endif /* _ASM_X86_PAGE_64_DEFS_H */ |