With the rise of cloud computing, the use of virtual machines in data centers has become genuinely common. To achieve load balance and disaster recovery between different hosts when a virtual machine is providing services, the concept of live migration has been proposed and has now become one of the essential capabilities in data centers. On the other hand, users’ concerns about data privacy when applications are deployed on cloud vendors’ servers are also rising, and for this reason, confidential virtual machines, a new type of virtualization hardware, have been proposed. However, since the memory of confidential VMs is usually encrypted, existing live migration solutions cannot be applied to confidential VMs directly, so hardware vendors have come up with various solutions to support this critical feature. For example, the mainstream confidential virtualization hardware platform – AMD-SEV, adds a series of interfaces in their secure firmware to assist the hypervisor to achieve live migration capability. However, this solution can cause the live migration time to be too long due to the limited number of secure processors and computing power. In this paper, we propose a new software design: PROMETHEUSMIGRATE. PROMETHEUSMIGRATE presents a novel software abstraction that bypasses SEV’s secure firmware with guaranteed security, thereby dramatically accelerating the total live migration time as well as downtime of the AMD-SEV platform.