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new: vma反向映射

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This commit is contained in:
fslongjin
2022-08-15 01:42:34 +08:00
parent f3cd2b7777
commit 1dd9195d69
20 changed files with 486 additions and 245 deletions
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7
kernel/mm/mm.c
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@ -213,6 +213,7 @@ void mm_init()
barrier();
tmp_page = memory_management_struct.pages_struct + j;
page_init(tmp_page, PAGE_PGT_MAPPED | PAGE_KERNEL | PAGE_KERNEL_INIT);
barrier();
page_num = tmp_page->addr_phys >> PAGE_2M_SHIFT;
*(memory_management_struct.bmp + (page_num >> 6)) |= (1UL << (page_num % 64));
++tmp_page->zone->count_pages_using;
@ -248,7 +249,7 @@ unsigned long page_init(struct Page *page, ul flags)
++page->zone->total_pages_link;
}
page->anon_vma = NULL;
spin_init(&page->op_lock);
spin_init(&(page->op_lock));
return 0;
}
@ -588,7 +589,9 @@ uint64_t mm_do_brk(uint64_t old_brk_end_addr, int64_t offset)
{
for (uint64_t i = old_brk_end_addr; i < end_addr; i += PAGE_2M_SIZE)
{
mm_map_vma(current_pcb->mm, i, PAGE_2M_SIZE, alloc_pages(ZONE_NORMAL, 1, PAGE_PGT_MAPPED)->addr_phys, VM_USER | VM_ACCESS_FLAGS, NULL);
struct vm_area_struct * vma=NULL;
mm_create_vma(current_pcb->mm, i, PAGE_2M_SIZE, VM_USER | VM_ACCESS_FLAGS, NULL, &vma);
mm_map_vma(vma, alloc_pages(ZONE_NORMAL, 1, PAGE_PGT_MAPPED)->addr_phys);
}
current_pcb->mm->brk_end = end_addr;
}