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include/mem/page.h

Section titled “include/mem/page.h”

struct page

Section titled “struct page”
struct page {
    uint64_t  meta;
};

struct page_table

Section titled “struct page_table”
struct page_table {
    pte_t  entries[512];
};

struct page_table referenced types:

page_for_pfn

Section titled “page_for_pfn”
struct page page_for_pfn(uint64_t pfn);

page_for_pfn referenced types:

page_get_pfn

Section titled “page_get_pfn”
uint64_t page_get_pfn(struct page *bp);

page_get_pfn referenced types:

Defines

Section titled “Defines”

PAGE_SIZE

Section titled “PAGE_SIZE”
#define PAGE_SIZE 4096ULL

PAGE_2MB

Section titled “PAGE_2MB”
#define PAGE_2MB 0x200000ULL

PAGE_1GB

Section titled “PAGE_1GB”
#define PAGE_1GB 0x40000000ULL

PAGE_PRESENT

Section titled “PAGE_PRESENT”
#define PAGE_PRESENT (0x1UL)

PAGE_WRITE

Section titled “PAGE_WRITE”
#define PAGE_WRITE (0x2UL)

PAGE_USER_ALLOWED

Section titled “PAGE_USER_ALLOWED”
#define PAGE_USER_ALLOWED (0x4UL)

PAGE_ALL

Section titled “PAGE_ALL”
#define PAGE_ALL 0xFFFUL

PAGE_XD

Section titled “PAGE_XD”
#define PAGE_XD (1UL << 63) // E(x)ecute (D)isable

PAGE_PHYS_MASK

Section titled “PAGE_PHYS_MASK”
#define PAGE_PHYS_MASK (0x00FFFFFFF000UL)

PAGE_PAGE_SIZE

Section titled “PAGE_PAGE_SIZE”
#define PAGE_PAGE_SIZE (1UL << 7)

PAGE_UNCACHABLE

Section titled “PAGE_UNCACHABLE”
#define PAGE_UNCACHABLE ((1UL << 4) | PAGE_WRITE)

PAGE_NO_FLAGS

Section titled “PAGE_NO_FLAGS”
#define PAGE_NO_FLAGS (0)

PAGE_WRITETHROUGH

Section titled “PAGE_WRITETHROUGH”
#define PAGE_WRITETHROUGH (1UL << 3)

PAGE_2MB_page

Section titled “PAGE_2MB_page”
#define PAGE_2MB_page (1ULL << 7)

PAGE_PAGEABLE

Section titled “PAGE_PAGEABLE”
#define PAGE_PAGEABLE (0)

PAGE_MOVABLE

Section titled “PAGE_MOVABLE”
#define PAGE_MOVABLE (0)

PAGE_2MB_PHYS_MASK

Section titled “PAGE_2MB_PHYS_MASK”
#define PAGE_2MB_PHYS_MASK (~((uintptr_t) PAGE_2MB - 1))

PAGE_ALIGN_DOWN(x)

Section titled “PAGE_ALIGN_DOWN(x)”
#define PAGE_ALIGN_DOWN(x) ALIGN_DOWN((uintptr_t) (x), PAGE_SIZE)

PAGE_ALIGN_UP(x)

Section titled “PAGE_ALIGN_UP(x)”
#define PAGE_ALIGN_UP(x) ALIGN_UP((uintptr_t) (x), PAGE_SIZE)

IS_PAGE_ALIGNED(x)

Section titled “IS_PAGE_ALIGNED(x)”
#define IS_PAGE_ALIGNED(x) IS_ALIGNED((uintptr_t) (x), PAGE_SIZE)

PAGE_2MB_ALIGN_DOWN(x)

Section titled “PAGE_2MB_ALIGN_DOWN(x)”
#define PAGE_2MB_ALIGN_DOWN(x) ALIGN_DOWN((uintptr_t) (x), PAGE_2MB)

PAGE_2MB_ALIGN_UP(x)

Section titled “PAGE_2MB_ALIGN_UP(x)”
#define PAGE_2MB_ALIGN_UP(x) ALIGN_UP((uintptr_t) (x), PAGE_2MB)

PAGE_1GB_ALIGN_DOWN(x)

Section titled “PAGE_1GB_ALIGN_DOWN(x)”
#define PAGE_1GB_ALIGN_DOWN(x) ALIGN_DOWN((uintptr_t) (x), PAGE_1GB)

PAGE_1GB_ALIGN_UP(x)

Section titled “PAGE_1GB_ALIGN_UP(x)”
#define PAGE_1GB_ALIGN_UP(x) ALIGN_UP((uintptr_t) (x), PAGE_1GB)

PAGE_TO_PFN(addr)

Section titled “PAGE_TO_PFN(addr)”
#define PAGE_TO_PFN(addr) ((addr) / PAGE_SIZE)

PFN_TO_PAGE(pfn)

Section titled “PFN_TO_PAGE(pfn)”
#define PFN_TO_PAGE(pfn) ((pfn) * PAGE_SIZE)

PAGES_NEEDED_FOR(bytes)

Section titled “PAGES_NEEDED_FOR(bytes)”
#define PAGES_NEEDED_FOR(bytes) (((bytes) + PAGE_SIZE - 1ULL) / PAGE_SIZE)

VMM_MAP_BASE

Section titled “VMM_MAP_BASE”
#define VMM_MAP_BASE 0xFFFFA00000200000

VMM_MAP_LIMIT

Section titled “VMM_MAP_LIMIT”
#define VMM_MAP_LIMIT 0xFFFFA00010000000

PT_ENTRIES

Section titled “PT_ENTRIES”
#define PT_ENTRIES 512

PT_INDEX_MASK

Section titled “PT_INDEX_MASK”
#define PT_INDEX_MASK 0x1FFULL

PAGE_4K_SHIFT

Section titled “PAGE_4K_SHIFT”
#define PAGE_4K_SHIFT 12

PAGE_2M_SHIFT

Section titled “PAGE_2M_SHIFT”
#define PAGE_2M_SHIFT 21

PAGE_1G_SHIFT

Section titled “PAGE_1G_SHIFT”
#define PAGE_1G_SHIFT 30

PAGE_4K_MASK

Section titled “PAGE_4K_MASK”
#define PAGE_4K_MASK ((1ULL << PAGE_4K_SHIFT) - 1)

PAGE_2M_MASK

Section titled “PAGE_2M_MASK”
#define PAGE_2M_MASK ((1ULL << PAGE_2M_SHIFT) - 1)