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Virtual address allocator

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

Functions

Section titled “Functions”

vas_bootstrap

Section titled “vas_bootstrap”
struct vas * vas_bootstrap(vaddr_t base, vaddr_t limit)
source

[base, limit)

vas_create

Section titled “vas_create”
struct vas * vas_create(vaddr_t base, vaddr_t limit)
source

vas_from

Section titled “vas_from”
struct vas * vas_from(struct address_range *ar)
source

vas_bootstrap_from

Section titled “vas_bootstrap_from”
struct vas * vas_bootstrap_from(struct address_range *ar)
source

vas_alloc

Section titled “vas_alloc”
vaddr_t vas_alloc(struct vas *vas, size_t size, size_t align)
source

No touching in interrupts or above DISPATCH

vas_free

Section titled “vas_free”
void vas_free(struct vas *vas, vaddr_t addr, size_t size)
source

Giving the wrong size panics. TODO: we only need to pass in addr, we can update the APIs for that later on

vas_map_full

Section titled “vas_map_full”
void * vas_map_full(
    struct vas *vas,
    paddr_t paddr,
    size_t len,
    struct vmm_request rq
)
source

vas_unmap

Section titled “vas_unmap”
void vas_unmap(struct vas *vas, void *vaddr, size_t len)
source

Drain cached reservations

vas_reclaim

Section titled “vas_reclaim”
void vas_reclaim(struct vas *vas)
source

vas_reclaim_freelist_pages

Section titled “vas_reclaim_freelist_pages”
void vas_reclaim_freelist_pages(struct vas_arena *arena)
source

vas_destroy

Section titled “vas_destroy”
bool vas_destroy(struct vas *vas)
source
TODO

virtual address spaces are NOT refcounted

vas_space_dump

Section titled “vas_space_dump”
void vas_space_dump(struct vas *vas)
source

vas_vaddr_in_vas

Section titled “vas_vaddr_in_vas”
bool vas_vaddr_in_vas(struct vas *vas, vaddr_t addr)
source

vas_vaddr_is_allocated

Section titled “vas_vaddr_is_allocated”
bool vas_vaddr_is_allocated(struct vas *vas, vaddr_t addr)
source

Includes interior byte addresses

Macros

Section titled “Macros”

VAS_CHUNK_SHIFT

Section titled “VAS_CHUNK_SHIFT”
#define VAS_CHUNK_SHIFT 26
source

VAS_CHUNK_SIZE

Section titled “VAS_CHUNK_SIZE”
#define VAS_CHUNK_SIZE BIT(VAS_CHUNK_SHIFT)
source

vas_map

Section titled “vas_map”
#define vas_map(vas, paddr, len, ...)
source
Expansion
#define vas_map(vas, paddr, len, ...) \
    vas_map_full((vas), (paddr), (len), vmm_request_with_defaults(__VA_ARGS__))