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+// Copyright 2020 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+//! A crate for abstracting the underlying kernel hypervisor used in crosvm.
+pub mod caps;
+pub mod kvm;
+pub mod types;
+
+use sys_util::Result;
+
+pub use crate::caps::*;
+pub use crate::types::*;
+
+/// A trait for managing the underlying cpu information for the hypervisor and to check its capabilities.
+trait Hypervisor {
+    // Checks if a particular `HypervisorCap` is available.
+    fn check_capability(&self, cap: &HypervisorCap) -> bool;
+    // Get the system supported CPUID values.
+    #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
+    fn get_supported_cpuid(&self) -> Result<CpuId>;
+    // Get the system emulated CPUID values.
+    #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
+    fn get_emulated_cpuid(&self) -> Result<CpuId>;
+}