On 21.04.22 00:25, Yury Norov wrote: > Copying bitmaps from/to 64-bit arrays with bitmap_copy is not safe > in general case. Use designated functions instead. > Just so I understand correctly: there is no BUG, it's just cleaner to do it that way, correct? IIUC, bitmap_to_arr64() translates to bitmap_copy_clear_tail() on s390x. As the passed length is always 1024 (KVM_S390_VM_CPU_FEAT_NR_BITS), we essentially end up with bitmap_copy() again. Looks cleaner to me Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> -- Thanks, David / dhildenb