static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)//在内核空间填充 PMD。 { __pmd_populate(pmdp, __pa(ptep), _PAGE_KERNEL_TABLE);//调用 __pmd_populate,将页表项的物理地址和内核页表的保护标志 _PAGE_KERNEL_TABLE 传递给它。 } static inline void p...
pmd_populate_kernel(NULL, pmd, pte); get_page(virt_to_page(pmd)); } pte = pte_offset_kernel(pmd, addr);if(iomap && pte_present(*pte))return-EFAULT;/* Create 2nd stage page table mapping - Level 3 */old_pte = *pte; kvm_set_pte(pte, *new_pte);if(pte_present(old_pte)) kv...
...16个不同域,但在ARM Linux只定义和使用3个; #define DOMAIN_KERNEL 2 #define DOMAIN_TABLE 2 #define DOMAIN_USER 1 #define...512个页面表是给ARM硬件MMU使用的; 一次映射两个相邻的一级页表项,也就是对应的两个相邻的二级页表都存放在一个page中; 然后把这个PTE页面表的基地址通过__pmd_populate(...
299phys_addr_t phys, pgprot_t prot,300phys_addr_t (*pgtable_alloc)(int),301intflags)302{303unsignedlongnext;304pud_t *pudp;305p4d_t *p4dp =p4d_offset(pgdp, addr);306p4d_t p4d = READ_ONCE(*p4dp);307308if(p4d_none(p4d)) {311pud_phys =pgtable_alloc(PUD_SHIFT);312__p4d_p...
kasan_populate_pud+0x16f/0x188 [ 0.232054] ? kasan_populate_shadow+0x1a9/0x1fb [ 0.233278] ? kasan_init+0x49d/0x5f5 [ 0.234253] ? setup_arch+0x1013/0x13c4 [ 0.235270] ? start_kernel+0x74/0x3eb [ 0.236263] ? secondary_startup_64_no_verify+0xc2/0xcb [ 0.237735] ---[ end K...
// pmd_populate //设置pmd表项为pte pte_t * pte ; pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, &vmf->ptl); ->pte_offset_map(dir, address) pte_offset_kernel((dir), (address)) return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address); ...
pmd)) split_pmd(pmd, pte); __pmd_populate(pmd, __pa(pte), PMD_TYPE_TABLE); 1K21 Linux内存管理--基本概念 Linux物理内存三级架构对于内存管理,Linux采用了与具体体系架构不相关的设计模型,实现了良好的可伸缩性。它主要由内存节点node、内存区域zone和物理页框page三级架构组成。...Linux内核中使用数据...
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)//在内核空间填充 PMD。 { __pmd_populate(pmdp, __pa(ptep), _PAGE_KERNEL_TABLE);//调用 __pmd_populate,将页表项的物理地址和内核页表的保护标志 _PAGE_KERNEL_TABLE 传递给它。
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)//在内核空间填充 PMD。 { __pmd_populate(pmdp, __pa(ptep), _PAGE_KERNEL_TABLE);//调用 __pmd_populate,将页表项的物理地址和内核页表的保护标志 _PAGE_KERNEL_TABLE 传递给它。
pmd_populate_kernel(NULL, pmd, pte); get_page(virt_to_page(pmd)); } pte = pte_offset_kernel(pmd, addr);if(iomap && pte_present(*pte))return-EFAULT;/* Create 2nd stage page table mapping - Level 3 */old_pte = *pte; kvm_set_pte(pte, *new_pte);if(pte_present(old_pte)) ...