#ifndef _X86_64_PAGE_H #define _X86_64_PAGE_H #include <linux/const.h> /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #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 + 1) #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 (_AC(1,UL) << PMD_SHIFT) #define HPAGE_SHIFT PMD_SHIFT #define HPAGE_SIZE (_AC(1,UL) << 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(movableflags, vma, vaddr) \ alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, 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; extern unsigned long phys_base; #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) } ) #endif /* !__ASSEMBLY__ */ #define __PHYSICAL_START CONFIG_PHYSICAL_START #define __KERNEL_ALIGN 0x200000 /* * Make sure kernel is aligned to 2MB address. Catching it at compile * time is better. Change your config file and compile the kernel * for a 2MB aligned address (CONFIG_PHYSICAL_START) */ #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 #error "CONFIG_PHYSICAL_START must be a multiple of 2MB" #endif #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) #define __START_KERNEL_map _AC(0xffffffff80000000, UL) #define __PAGE_OFFSET _AC(0xffff810000000000, UL) /* 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 ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1) #define __VIRTUAL_MASK_SHIFT 48 #define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1) #define KERNEL_TEXT_SIZE (40*1024*1024) #define KERNEL_TEXT_START _AC(0xffffffff80000000, UL) #define PAGE_OFFSET __PAGE_OFFSET #ifndef __ASSEMBLY__ #include <asm/bug.h> extern unsigned long __phys_addr(unsigned long); #endif /* __ASSEMBLY__ */ #define __pa(x) __phys_addr((unsigned long)(x)) #define __pa_symbol(x) __phys_addr((unsigned long)(x)) #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 #define vmemmap ((struct page *)VMEMMAP_START) #include <asm-generic/memory_model.h> #include <asm-generic/page.h> #endif /* __KERNEL__ */ #endif /* _X86_64_PAGE_H */