SVSM and VM Privilege Level Instantiation and Execution

Explore the intricacies of VM Privilege Level (VMPL) and Secure VM Service Module (SVSM) in this 28-minute KVM Forum talk. Delve into the VMPL feature of SEV-SNP, which enables privilege separation within SEV-SNP guests, and learn how each VMPL requires its own execution state for every vCPU. Discover the role of SVSM in running at the highest privilege level to provide services to lower privilege levels, such as a Linux guest OS. Investigate methods for maintaining VMPL state for each guest vCPU and techniques for efficiently switching between VMPL levels. Gain insights from Tom Lendacky, a member of the Linux OS group at Advanced Micro Devices, who is responsible for enabling and enhancing support for AMD processor features in the Linux kernel. Access accompanying slides for a comprehensive understanding of this advanced virtualization topic.