Commit fb6d5c1d authored by Qing Zhang's avatar Qing Zhang Committed by Huacai Chen
Browse files

kasan: Add (pmd|pud)_init for LoongArch zero_(pud|p4d)_populate process 



LoongArch populates pmd/pud with invalid_pmd_table/invalid_pud_table in
pagetable_init, So pmd_init/pud_init(p) is required, define them as __weak
in mm/kasan/init.c, like mm/sparse-vmemmap.c.

Reviewed-by: default avatarAndrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: default avatarQing Zhang <zhangqing@loongson.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent 9b04c764

mm/kasan/init.c

+14 −4
Original line number Diff line number Diff line
@@ -139,6 +139,10 @@ static int __ref zero_pmd_populate(pud_t *pud, unsigned long addr, 
	return 0;

}



void __weak __meminit pmd_init(void *addr)

{

}



static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr,

				unsigned long end)

{
@@ -166,8 +170,9 @@ static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr, 
				if (!p)

					return -ENOMEM;

			} else {

				pud_populate(&init_mm, pud,

					early_alloc(PAGE_SIZE, NUMA_NO_NODE));

				p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);

				pmd_init(p);

				pud_populate(&init_mm, pud, p);

			}

		}

		zero_pmd_populate(pud, addr, next);
@@ -176,6 +181,10 @@ static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr, 
	return 0;

}



void __weak __meminit pud_init(void *addr)

{

}



static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,

				unsigned long end)

{
@@ -207,8 +216,9 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr, 
				if (!p)

					return -ENOMEM;

			} else {

				p4d_populate(&init_mm, p4d,

					early_alloc(PAGE_SIZE, NUMA_NO_NODE));

				p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);

				pud_init(p);

				p4d_populate(&init_mm, p4d, p);

			}

		}

		zero_pud_populate(p4d, addr, next);