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include/mem/page.h View source View on GitHub

Structs

Section titled “Structs”

page

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

page_table

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

Enums

Section titled “Enums”

page_tag

Section titled “page_tag”
enum page_tag {
    PAGE_TAG_NONE = 0,
    PAGE_TAG_BUDDY = 1,
    PAGE_TAG_FOLIO = 2,
    PAGE_TAG_ARENA = 3,
};

Functions

Section titled “Functions”

page_get_tag

Section titled “page_get_tag”
enum page_tag page_get_tag(const struct page *p);

page_set_tag

Section titled “page_set_tag”
void page_set_tag(struct page *p, enum page_tag tag);

page_get_payload

Section titled “page_get_payload”
uint64_t page_get_payload(const struct page *p);

page_set_payload

Section titled “page_set_payload”
void page_set_payload(struct page *p, uint64_t payload);

page_assert_tag

Section titled “page_assert_tag”
void page_assert_tag(const struct page *p, enum page_tag expected);

page_for_pfn

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

page_for_paddr

Section titled “page_for_paddr”
struct page page_for_paddr(paddr_t paddr);

page_get_pfn

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

page_get_paddr

Section titled “page_get_paddr”
paddr_t page_get_paddr(const struct page *bp);

page_get_vaddr

Section titled “page_get_vaddr”
vaddr_t page_get_vaddr(const struct page *bp);

Macros

Section titled “Macros”

PAGE_SIZE

Section titled “PAGE_SIZE”
#define PAGE_SIZE KB(4)

PAGE_2MB

Section titled “PAGE_2MB”
#define PAGE_2MB MB(2)

PAGE_1GB

Section titled “PAGE_1GB”
#define PAGE_1GB GB(1)

PAGE_PRESENT_SHIFT

Section titled “PAGE_PRESENT_SHIFT”
#define PAGE_PRESENT_SHIFT (0)

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_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_UNCACHABLE

Section titled “PAGE_UNCACHABLE”
#define PAGE_UNCACHABLE (1UL << 4) /* PCD */

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_HUGE

Section titled “PAGE_HUGE”
#define PAGE_HUGE (1ULL << 7) /* PS: 2MB at the PD level, 1GB at the PDPT */

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 (0x00FFFFE00000UL)

PAGE_1GB_PHYS_MASK

Section titled “PAGE_1GB_PHYS_MASK”
#define PAGE_1GB_PHYS_MASK (0x00FFC0000000UL)

PAGE_ALIGN_DOWN

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

PAGE_ALIGN_UP

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

IS_PAGE_ALIGNED

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

PAGE_2MB_ALIGN_DOWN

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

PAGE_2MB_ALIGN_UP

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

PAGE_1GB_ALIGN_DOWN

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

PAGE_1GB_ALIGN_UP

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

PAGE_TO_PFN

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

PFN_TO_PAGE

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

PAGES_NEEDED_FOR

Section titled “PAGES_NEEDED_FOR”
#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_TAG_MASK

Section titled “PAGE_TAG_MASK”
#define PAGE_TAG_MASK 0x7ULL

PAGE_PAYLOAD_ALIGNMENT

Section titled “PAGE_PAYLOAD_ALIGNMENT”
#define PAGE_PAYLOAD_ALIGNMENT 8