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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: Andrey Konovalov <andreyknvl@gmail.com> Signed-off-by: Qing Zhang <zhangqing@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>