This project is the home of the Independent Guest Virtual Machine (IGVM) file format. The format specification can be found in the igvm_defs crate, with a Rust implementation of the binary format in the igvm crate.

The IGVM file format is designed to encapsulate all information required to launch a virtual machine on any given virtualization stack, with support for different isolation technologies such as AMD SEV-SNP and Intel TDX.

At a conceptual level, this file format is a set of commands created by the tool that generated the file, used by the loader to construct the initial guest state. The file format also contains measurement information that the underlying platform will use to confirm that the file was loaded correctly and signed by the appropriate authorities.

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