2024-09-23 –, Hall C+D
For SEV SNP live migration support, a migration helper would run as a mirror VM. The mirror VM would use the existing KVM API's to copy the KVM context and populate the NPT page tables at page fault time. The mirror VM also does the dirty page tracking and finalizes the end of live migration. For designing the guest_memfd API's for the mirror VM, we want to consider the post copy use case as well so that the copying of paged-in memory in the mirror VM would have a separate memory view. In this talk we will cover the above use-cases for guest_memfd & mirror VM design for the SEV-SNP live migration.
Tom Lendacky is a member of the Linux OS group at Advanced Micro Devices where he is responsible for enabling and enhancing support for AMD processor features in the Linux kernel. He is currently working on extending the SEV support in the Linux kernel to further enhance the features and capabilities of SEV-SNP (Secure Encrypted Virtualization - Secure Nested Paging). He has spoken at various Linux events, including KVM Forum a few times.
Pankaj currently work with AMD in the Confidential Compute team. Previously, worked in the field of Linux kernel & Virtualization with Red Hat.