| /DragonOS-0.1.2/kernel/src/mm/ |
| D | vma.c | 13 struct vm_area_struct *vma = (struct vm_area_struct *)kmalloc(sizeof(struct vm_area_struct), 0); in vm_area_alloc() local
14 if (vma) in vm_area_alloc()
15 vma_init(vma, mm); in vm_area_alloc()
16 return vma; in vm_area_alloc()
24 void vm_area_del(struct vm_area_struct *vma) in vm_area_del() argument
26 if (vma->vm_mm == NULL) in vm_area_del()
28 __vma_unlink_list(vma->vm_mm, vma); in vm_area_del()
36 void vm_area_free(struct vm_area_struct *vma) in vm_area_free() argument
38 if (vma->vm_prev == NULL && vma->vm_next == NULL) // 如果当前是剩余的最后一个vma in vm_area_free()
39 vma->vm_mm->vmas = NULL; in vm_area_free()
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| D | mmap.c | 327 struct vm_area_struct *vma = vm_area_alloc(mm); in mm_create_vma() local
328 if (unlikely(vma == NULL)) in mm_create_vma()
330 vma->vm_ops = vm_ops; in mm_create_vma()
331 vma->vm_flags = vm_flags; in mm_create_vma()
332 vma->vm_start = vaddr; in mm_create_vma()
333 vma->vm_end = vaddr + length; in mm_create_vma()
335 retval = vma_insert(mm, vma); in mm_create_vma()
338 *res_vma = vma_find(mm, vma->vm_start); in mm_create_vma()
339 kfree(vma); in mm_create_vma()
347 *res_vma = vma; in mm_create_vma()
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| D | mmio.c | 91 struct vm_area_struct *vma = vma_find(&initial_mm, vaddr + i); in mmio_release() local
92 if (unlikely(vma == NULL)) in mmio_release()
98 if (unlikely(vma->vm_start != (vaddr + i))) in mmio_release()
104 retval = __mmio_buddy_give_back(vma->vm_start, 31 - __clz(vma->vm_end - vma->vm_start)); in mmio_release()
105 i += vma->vm_end - vma->vm_start; in mmio_release()
108 vm_area_del(vma); in mmio_release()
109 vm_area_free(vma); in mmio_release()
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| D | internal.h | 16 void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma, struct vm_area_struct *prev);
24 void __vma_unlink_list(struct mm_struct *mm, struct vm_area_struct *vma);
60 int __anon_vma_add(struct anon_vma_t *anon_vma, struct vm_area_struct *vma);
68 int __anon_vma_del(struct vm_area_struct *vma);
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| D | mm.h | 322 static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm) in vma_init() argument
324 memset(vma, 0, sizeof(struct vm_area_struct)); in vma_init()
325 vma->vm_mm = mm; in vma_init()
326 vma->vm_prev = vma->vm_next = NULL; in vma_init()
327 vma->vm_ops = NULL; in vma_init()
328 list_init(&vma->anon_vma_list); in vma_init()
338 static inline bool vma_is_foreign(struct vm_area_struct *vma) in vma_is_foreign() argument
342 if (current_pcb->mm != vma->vm_mm) in vma_is_foreign()
347 static inline bool vma_is_accessible(struct vm_area_struct *vma) in vma_is_accessible() argument
349 return vma->vm_flags & VM_ACCESS_FLAGS; in vma_is_accessible()
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| D | Makefile | 5 all:mm.o slab.o mm-stat.o vma.o mmap.o utils.o mmio.o mmio-buddy.o
16 vma.o: vma.c
17 $(CC) $(CFLAGS) -c vma.c -o vma.o
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| D | mm.c | 640 struct vm_area_struct *vma = NULL; in mm_do_brk() local
641 mm_create_vma(current_pcb->mm, i, PAGE_2M_SIZE, VM_USER | VM_ACCESS_FLAGS, NULL, &vma); in mm_do_brk()
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| /DragonOS-0.1.2/kernel/src/process/ |
| D | fork.c | 244 struct vm_area_struct *vma = current_pcb->mm->vmas; in process_copy_mm() local
245 while (vma != NULL) in process_copy_mm()
247 if (vma->vm_end > USER_MAX_LINEAR_ADDR || vma->vm_flags & VM_DONTCOPY) in process_copy_mm()
249 vma = vma->vm_next; in process_copy_mm()
253 int64_t vma_size = vma->vm_end - vma->vm_start; in process_copy_mm()
263 … int ret = mm_create_vma(new_mms, vma->vm_start + i * PAGE_2M_SIZE, PAGE_2M_SIZE, vma->vm_flags, in process_copy_mm()
264 vma->vm_ops, &new_vma); in process_copy_mm()
271 memcpy((void *)phys_2_virt(pa), (void *)(vma->vm_start + i * PAGE_2M_SIZE), in process_copy_mm()
282 … int ret = mm_create_vma(new_mms, vma->vm_start, map_size, vma->vm_flags, vma->vm_ops, &new_vma); in process_copy_mm()
289 memcpy((void *)va, (void *)vma->vm_start, vma_size); in process_copy_mm()
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| D | process.c | 264 struct vm_area_struct *vma = NULL; in process_load_elf_file() local
266 … mm_create_vma(current_pcb->mm, virt_base, PAGE_2M_SIZE, VM_USER | VM_ACCESS_FLAGS, NULL, &vma); in process_load_elf_file()
287 struct vm_area_struct *vma = NULL; in process_load_elf_file() local
289 NULL, &vma); in process_load_elf_file()
323 struct vm_area_struct *vma = NULL; in process_load_elf_file() local
326 VM_USER | VM_ACCESS_FLAGS, NULL, &vma); in process_load_elf_file()
330 mm_map_vma(vma, pa, 0, PAGE_2M_SIZE); in process_load_elf_file()
754 struct vm_area_struct *vma = pcb->mm->vmas; in process_exit_mm() local
755 while (vma != NULL) in process_exit_mm()
758 struct vm_area_struct *cur_vma = vma; in process_exit_mm()
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| /DragonOS-0.1.2/docs/kernel/memory_management/ |
| D | mmio.md | 28 4. 创建VMA，并将VMA标记为`VM_IO|VM_DONTCOPY`。MMIO的vma只绑定在`initial_mm`下，且不会被拷贝。
31 一旦MMIO地址空间分配完成，它就像普通的vma一样，可以使用mmap系列函数进行操作。
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