__map_memblock
__map_memblock(kfence_pool, kfence_pool + KFENCE_POOL_SIZE,
__map_memblock(kernel_start, init_begin, pgprot_tagged(PAGE_KERNEL),
__map_memblock(init_end, kernel_end, pgprot_tagged(PAGE_KERNEL),
__map_memblock(start, end, pgprot_tagged(PAGE_KERNEL),