Quoting Oren Laadan (orenl@xxxxxxxxxxxxxxx): > > Cool ! > > So what do we have working now for 64 bit kernel (for 32 bit kernel > we know it works...): > > 'restart' checkpointed > program program > ---------------------------------------- > 64bit 64bit -> works > 32bit 32bit -> works > > 64bit 32bit -> ????? Actually the other way around works - /bin/restart_32 < 64bit.out works just fine. /bin/restart_64 < 32bit.out does not. The reason is that destroy_mm() ends up calling do_munmap on a 64-bit mapping after the switch to 32-bit had been made, and it refuses bc vma->vm_start > TASK_SIZE. Perhaps getting it to work will be as simple as temporarily switching back to 64-bit during destroy_mm(). > Does it make sense to allow the opposite transition: 'restart' starts > as a 32bit and becomes a 64bit after it restores the state from the > image ? > > And what about if you checkpoint on a 32 bit kernel and try to > restart on a 64 bit kernel, and vice versa ? (in both cases, the > program of course is 32bit, and we can assume same physical host > for now). I have no hw right now where I could test such a thing. Do you? _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
