| #ifndef _X86_64_PAGE_H |
| #define _X86_64_PAGE_H |
| |
| |
| /* PAGE_SHIFT determines the page size */ |
| #define PAGE_SHIFT 12 |
| #ifdef __ASSEMBLY__ |
| #define PAGE_SIZE (0x1 << PAGE_SHIFT) |
| #else |
| #define PAGE_SIZE (1UL << PAGE_SHIFT) |
| #endif |
| #define PAGE_MASK (~(PAGE_SIZE-1)) |
| #define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK) |
| |
| #define THREAD_ORDER 1 |
| #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) |
| #define CURRENT_MASK (~(THREAD_SIZE-1)) |
| |
| #define EXCEPTION_STACK_ORDER 0 |
| #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) |
| |
| #define DEBUG_STACK_ORDER EXCEPTION_STACK_ORDER |
| #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) |
| |
| #define IRQSTACK_ORDER 2 |
| #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER) |
| |
| #define STACKFAULT_STACK 1 |
| #define DOUBLEFAULT_STACK 2 |
| #define NMI_STACK 3 |
| #define DEBUG_STACK 4 |
| #define MCE_STACK 5 |
| #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ |
| |
| #define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1)) |
| #define LARGE_PAGE_SIZE (1UL << PMD_SHIFT) |
| |
| #define HPAGE_SHIFT PMD_SHIFT |
| #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) |
| #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |
| #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) |
| |
| #ifdef __KERNEL__ |
| #ifndef __ASSEMBLY__ |
| |
| extern unsigned long end_pfn; |
| |
| void clear_page(void *); |
| void copy_page(void *, void *); |
| |
| #define clear_user_page(page, vaddr, pg) clear_page(page) |
| #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) |
| |
| #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) |
| #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
| /* |
| * These are used to make use of C type-checking.. |
| */ |
| typedef struct { unsigned long pte; } pte_t; |
| typedef struct { unsigned long pmd; } pmd_t; |
| typedef struct { unsigned long pud; } pud_t; |
| typedef struct { unsigned long pgd; } pgd_t; |
| #define PTE_MASK PHYSICAL_PAGE_MASK |
| |
| typedef struct { unsigned long pgprot; } pgprot_t; |
| |
| #define pte_val(x) ((x).pte) |
| #define pmd_val(x) ((x).pmd) |
| #define pud_val(x) ((x).pud) |
| #define pgd_val(x) ((x).pgd) |
| #define pgprot_val(x) ((x).pgprot) |
| |
| #define __pte(x) ((pte_t) { (x) } ) |
| #define __pmd(x) ((pmd_t) { (x) } ) |
| #define __pud(x) ((pud_t) { (x) } ) |
| #define __pgd(x) ((pgd_t) { (x) } ) |
| #define __pgprot(x) ((pgprot_t) { (x) } ) |
| |
| #define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START) |
| #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
| #define __START_KERNEL_map 0xffffffff80000000UL |
| #define __PAGE_OFFSET 0xffff810000000000UL |
| |
| #else |
| #define __PHYSICAL_START CONFIG_PHYSICAL_START |
| #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
| #define __START_KERNEL_map 0xffffffff80000000 |
| #define __PAGE_OFFSET 0xffff810000000000 |
| #endif /* !__ASSEMBLY__ */ |
| |
| /* to align the pointer to the (next) page boundary */ |
| #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) |
| |
| /* See Documentation/x86_64/mm.txt for a description of the memory map. */ |
| #define __PHYSICAL_MASK_SHIFT 46 |
| #define __PHYSICAL_MASK ((1UL << __PHYSICAL_MASK_SHIFT) - 1) |
| #define __VIRTUAL_MASK_SHIFT 48 |
| #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) |
| |
| #define KERNEL_TEXT_SIZE (40UL*1024*1024) |
| #define KERNEL_TEXT_START 0xffffffff80000000UL |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <asm/bug.h> |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) |
| |
| /* Note: __pa(&symbol_visible_to_c) should be always replaced with __pa_symbol. |
| Otherwise you risk miscompilation. */ |
| #define __pa(x) (((unsigned long)(x)>=__START_KERNEL_map)?(unsigned long)(x) - (unsigned long)__START_KERNEL_map:(unsigned long)(x) - PAGE_OFFSET) |
| /* __pa_symbol should be used for C visible symbols. |
| This seems to be the official gcc blessed way to do such arithmetic. */ |
| #define __pa_symbol(x) \ |
| ({unsigned long v; \ |
| asm("" : "=r" (v) : "0" (x)); \ |
| __pa(v); }) |
| |
| #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) |
| #define __boot_va(x) __va(x) |
| #define __boot_pa(x) __pa(x) |
| #ifdef CONFIG_FLATMEM |
| #define pfn_valid(pfn) ((pfn) < end_pfn) |
| #endif |
| |
| #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
| #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |
| #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) |
| |
| #define VM_DATA_DEFAULT_FLAGS \ |
| (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ |
| VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
| |
| #define __HAVE_ARCH_GATE_AREA 1 |
| |
| #endif /* __KERNEL__ */ |
| |
| #include <asm-generic/memory_model.h> |
| #include <asm-generic/page.h> |
| |
| #endif /* _X86_64_PAGE_H */ |