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sandbox: vm: add page splitting, merging, and allocation

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max 🍓
2023-02-01 15:03:42 +00:00
parent 4cb30737fb
commit af49d47ba8
4 changed files with 218 additions and 0 deletions
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7
sandbox/vm/include/socks/vm.h
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@@ -17,6 +17,8 @@
#define VM_PAGE_SIZE 0x1000
#define VM_PAGE_SHIFT 12
#define VM_PAGE_IS_RESERVED(pg) ((pg)->p_flags & VM_PAGE_RESERVED)
typedef phys_addr_t vm_alignment_t;
typedef unsigned int vm_node_id_t;
@@ -133,9 +135,14 @@ extern vm_alignment_t vm_page_order_to_alignment(vm_page_order_t order);
extern vm_page_t *vm_page_alloc(vm_page_order_t order, vm_flags_t flags);
extern void vm_page_free(vm_page_t *pg);
extern int vm_page_split(vm_page_t *pg, vm_page_t **a, vm_page_t **b);
extern vm_page_t *vm_page_merge(vm_page_t *a, vm_page_t *b);
extern vm_page_t *vm_page_get_buddy(vm_page_t *pg);
extern size_t vm_bytes_to_pages(size_t bytes);
extern void vm_zone_init(vm_zone_t *z, const vm_zone_descriptor_t *zone_info);
extern vm_page_t *vm_zone_alloc_page(vm_zone_t *z, vm_page_order_t order, vm_flags_t flags);
extern void vm_zone_free_page(vm_zone_t *z, vm_page_t *pg);
#endif