// Copyright 2023, The Android Open Source Project // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. //! Access to hypervisor capabilities via system properties set by the bootloader. use anyhow::Result; use platformproperties::hypervisorproperties; /// Returns whether there is a hypervisor present that supports non-protected VMs. pub fn is_vm_supported() -> Result { Ok(hypervisorproperties::hypervisor_vm_supported()?.unwrap_or(false)) } /// Returns whether there is a hypervisor present that supports protected VMs. pub fn is_protected_vm_supported() -> Result { Ok(hypervisorproperties::hypervisor_protected_vm_supported()?.unwrap_or(false)) } /// Returns whether there is a hypervisor present that supports any sort of VM, either protected /// or non-protected. pub fn is_any_vm_supported() -> Result { is_vm_supported().and_then(|ok| if ok { Ok(true) } else { is_protected_vm_supported() }) } /// Returns the version of the hypervisor, if there is one. pub fn version() -> Result> { Ok(hypervisorproperties::hypervisor_version()?) } /// Returns if the hypervisor is pKVM pub fn is_pkvm() -> Result { Ok(version()?.unwrap_or_default().starts_with("kvm") && is_protected_vm_supported()?) }