mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-09-12 18:15:06 +00:00
49b4fba283
Add a new function to the hypervisor trait so that the caller can retrieve the list of MSRs supported by this hypervisor. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
117 lines
2.9 KiB
Rust
117 lines
2.9 KiB
Rust
// Copyright © 2019 Intel Corporation
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
|
|
//
|
|
// Copyright © 2020, Microsoft Corporation
|
|
//
|
|
// Copyright 2018-2019 CrowdStrike, Inc.
|
|
//
|
|
//
|
|
use crate::vm::Vm;
|
|
#[cfg(target_arch = "x86_64")]
|
|
use crate::x86_64::{CpuId, MsrList};
|
|
#[cfg(target_arch = "x86_64")]
|
|
use kvm_ioctls::Cap;
|
|
use std::sync::Arc;
|
|
|
|
use thiserror::Error;
|
|
|
|
#[derive(Error, Debug)]
|
|
///
|
|
///
|
|
pub enum HypervisorError {
|
|
///
|
|
/// Vm creation failure
|
|
///
|
|
#[error("Failed to create Vm: {0}")]
|
|
VmCreate(#[source] anyhow::Error),
|
|
///
|
|
/// Vm setup failure
|
|
///
|
|
#[error("Failed to setup Vm: {0}")]
|
|
VmSetup(#[source] anyhow::Error),
|
|
///
|
|
/// API version error
|
|
///
|
|
#[error("Failed to get API Version: {0}")]
|
|
GetApiVersion(#[source] anyhow::Error),
|
|
///
|
|
/// Vcpu mmap error
|
|
///
|
|
#[error("Failed to get Vcpu Mmap: {0}")]
|
|
GetVcpuMmap(#[source] anyhow::Error),
|
|
///
|
|
/// Max Vcpu error
|
|
///
|
|
#[error("Failed to get number of max vcpus: {0}")]
|
|
GetMaxVcpu(#[source] anyhow::Error),
|
|
///
|
|
/// Recommended Vcpu error
|
|
///
|
|
#[error("Failed to get number of max vcpus: {0}")]
|
|
GetNrVcpus(#[source] anyhow::Error),
|
|
///
|
|
/// CpuId error
|
|
///
|
|
#[error("Failed to get number of max vcpus: {0}")]
|
|
GetCpuId(#[source] anyhow::Error),
|
|
///
|
|
/// Failed to retrieve list of MSRs.
|
|
///
|
|
#[error("Failed to get the list of supported MSRs: {0}")]
|
|
GetMsrList(#[source] anyhow::Error),
|
|
}
|
|
|
|
///
|
|
/// Result type for returning from a function
|
|
///
|
|
pub type Result<T> = std::result::Result<T, HypervisorError>;
|
|
|
|
///
|
|
/// Trait to represent a Hypervisor
|
|
///
|
|
/// This crate provides a hypervisor-agnostic interfaces
|
|
///
|
|
pub trait Hypervisor: Send + Sync {
|
|
///
|
|
/// Create a Vm using the underlying hypervisor
|
|
/// Return a hypervisor-agnostic Vm trait object
|
|
///
|
|
fn create_vm(&self) -> Result<Arc<dyn Vm>>;
|
|
///
|
|
/// Get the API version of the hypervisor
|
|
///
|
|
fn get_api_version(&self) -> i32;
|
|
///
|
|
/// Returns the size of the memory mapping required to use the vcpu's structures
|
|
///
|
|
fn get_vcpu_mmap_size(&self) -> Result<usize>;
|
|
///
|
|
/// Gets the recommended maximum number of VCPUs per VM.
|
|
///
|
|
fn get_max_vcpus(&self) -> Result<usize>;
|
|
///
|
|
/// Gets the recommended number of VCPUs per VM.
|
|
///
|
|
fn get_nr_vcpus(&self) -> Result<usize>;
|
|
#[cfg(target_arch = "x86_64")]
|
|
///
|
|
/// Checks if a particular `Cap` is available.
|
|
///
|
|
fn check_capability(&self, c: Cap) -> bool;
|
|
#[cfg(target_arch = "x86_64")]
|
|
///
|
|
/// Get the supported CpuID
|
|
///
|
|
fn get_cpuid(&self) -> Result<CpuId>;
|
|
///
|
|
/// Check particular extensions if any
|
|
///
|
|
fn check_required_extensions(&self) -> Result<()>;
|
|
#[cfg(target_arch = "x86_64")]
|
|
///
|
|
/// Retrieve the list of MSRs supported by the hypervisor.
|
|
///
|
|
fn get_msr_list(&self) -> Result<MsrList>;
|
|
}
|