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Extend sev_smoke_test to also run a minimal SEV-SNP smoke test that initializes and sets up private memory regions required to run a simple SEV-SNP guest. Similar to its SEV-ES smoke test counterpart, this also does not support GHCB and ucall yet and uses the GHCB MSR protocol to trigger an exit of the type KVM_EXIT_SYSTEM_EVENT. Signed-off-by: Pratik R. Sampat <prsampat@amd.com> Link: https://lore.kernel.org/r/20250305230000.231025-11-prsampat@amd.com Signed-off-by: Sean Christopherson <seanjc@google.com>