L2_ROUND_BLOCK
pmapboot_protect(L2_ROUND_BLOCK(rodata_start),
L2_ROUND_BLOCK(kernend), VM_PROT_EXECUTE);
kasan_kernelsize = L2_ROUND_BLOCK(kernend) - kernstart;
kernend_l2 = L2_ROUND_BLOCK(kernend);
const vaddr_t lva = L2_ROUND_BLOCK(kernend + kernend_extra);