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437e6088e6
A VMGEXIT exit occurs for any of the listed NAE events in the GHCB specification [1] (e.g. CPUID, RDMSR/WRMSR, MMIO, port IO, etc.). Some of these events are handled by hypervisor while other are handled by VMM. Currently, we are adding support for one such request i.e., report supported SEV-SNP features by hypervisor. [1] GHCB protocol specification: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56421.pdf Signed-off-by: Jinank Jain <jinankjain@microsoft.com> Signed-off-by: Muminul Islam <muislam@microsoft.com>