arch: CpuProfile enum

Introduce a CpuProfile enum that will be deserialized from the user's
selected CPU profile.

Currently we only have a "host" variant, but in the future there will
be a build script automatically constructing this enum based on
pre-generated CPU profiles.

Signed-off-by: Oliver Anderson <oliver.anderson@cyberus-technology.de>
On-behalf-of: SAP oliver.anderson@sap.com

arch/src/x86_64/cpu_profile/mod.rs

@@ -4,3 +4,13 @@
 //
 
 pub mod cpuid_adjustments;
+
+// TODO: Auto generate the CpuProfile enum with a build script once we introduce user facing CPU profiles.
+
+/// A [`CpuProfile`] is a mechanism for ensuring live migration compatibility
+/// between hosts with potentially different CPU models.
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+pub enum CpuProfile {
+    #[default]
+    Host,
+}