On EC2, /dev/mem appears to depend slightly on the Xen _host_. It will either correctly return EPERM on RAM reads, or if not, it will return all zeros. So, this is technically safe, but likely due to the Xen host.
On EC2, /dev/mem appears to depend slightly on the Xen _host_. It will either correctly return EPERM on RAM reads, or if not, it will return all zeros. So, this is technically safe, but likely due to the Xen host.