FNCPY_ALIGN
BUG_ON((uintptr_t)(dest_buf) & (FNCPY_ALIGN - 1) || \
(__funcp_address & ~(uintptr_t)1 & (FNCPY_ALIGN - 1))); \
new_ceil = ROUND_DOWN(new_ceil, FNCPY_ALIGN);
new_ceil = ROUND_DOWN(new_ceil, FNCPY_ALIGN);