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vm: mark memory holes as reserved under sparse memory model

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max 🍓
2023-02-17 19:34:12 +00:00
parent 81ca98c952
commit ff19915466
1 changed files with 7 additions and 1 deletions
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8
vm/sparse.c
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@@ -60,9 +60,15 @@ static vm_page_t *get_or_create_page(phys_addr_t addr)
vm_sector_t *sector = &sector_array[sector_number]; vm_sector_t *sector = &sector_array[sector_number];
if (!sector->s_pages) { if (!sector->s_pages) {
sector->s_pages = kzalloc(vm_page_order_to_pages(sector->s_size) * sizeof(vm_page_t), 0); size_t nr_pages = vm_page_order_to_pages(sector->s_size);
sector->s_pages = kzalloc(nr_pages * sizeof(vm_page_t), 0);
for (size_t i = 0; i < nr_pages; i++) {
sector->s_pages[i].p_flags = VM_PAGE_RESERVED;
}
} }
sector->s_pages[page_number].p_sector = sector_number; sector->s_pages[page_number].p_sector = sector_number;
return &sector->s_pages[page_number]; return &sector->s_pages[page_number];
} }