diff options
Diffstat (limited to 'kernel/arch/x86/include/asm/pgtable_64_types.h')
-rw-r--r-- | kernel/arch/x86/include/asm/pgtable_64_types.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/pgtable_64_types.h b/kernel/arch/x86/include/asm/pgtable_64_types.h new file mode 100644 index 000000000..e6844dfb4 --- /dev/null +++ b/kernel/arch/x86/include/asm/pgtable_64_types.h @@ -0,0 +1,70 @@ +#ifndef _ASM_X86_PGTABLE_64_DEFS_H +#define _ASM_X86_PGTABLE_64_DEFS_H + +#include <asm/sparsemem.h> + +#ifndef __ASSEMBLY__ +#include <linux/types.h> + +/* + * These are used to make use of C type-checking.. + */ +typedef unsigned long pteval_t; +typedef unsigned long pmdval_t; +typedef unsigned long pudval_t; +typedef unsigned long pgdval_t; +typedef unsigned long pgprotval_t; + +typedef struct { pteval_t pte; } pte_t; + +#endif /* !__ASSEMBLY__ */ + +#define SHARED_KERNEL_PMD 0 + +/* + * PGDIR_SHIFT determines what a top-level page table entry can map + */ +#define PGDIR_SHIFT 39 +#define PTRS_PER_PGD 512 + +/* + * 3rd level page + */ +#define PUD_SHIFT 30 +#define PTRS_PER_PUD 512 + +/* + * PMD_SHIFT determines the size of the area a middle-level + * page table can map + */ +#define PMD_SHIFT 21 +#define PTRS_PER_PMD 512 + +/* + * entries per page directory level + */ +#define PTRS_PER_PTE 512 + +#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) +#define PMD_MASK (~(PMD_SIZE - 1)) +#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) +#define PUD_MASK (~(PUD_SIZE - 1)) +#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE - 1)) + +/* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ +#define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL) +#define VMALLOC_START _AC(0xffffc90000000000, UL) +#define VMALLOC_END _AC(0xffffe8ffffffffff, UL) +#define VMEMMAP_START _AC(0xffffea0000000000, UL) +#define MODULES_VADDR (__START_KERNEL_map + KERNEL_IMAGE_SIZE) +#define MODULES_END _AC(0xffffffffff000000, UL) +#define MODULES_LEN (MODULES_END - MODULES_VADDR) +#define ESPFIX_PGD_ENTRY _AC(-2, UL) +#define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT) +#define EFI_VA_START ( -4 * (_AC(1, UL) << 30)) +#define EFI_VA_END (-68 * (_AC(1, UL) << 30)) + +#define EARLY_DYNAMIC_PAGE_TABLES 64 + +#endif /* _ASM_X86_PGTABLE_64_DEFS_H */ |