mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
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bb8cd9eb24
This commit replaces the way legacy interrupts were handled with the brand new implementation of the legacy InterruptSourceGroup for KVM. Additionally, since it removes the last bit relying on the Interrupt trait, the trait and its implementation can be removed from the codebase. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
80 lines
1.9 KiB
Rust
80 lines
1.9 KiB
Rust
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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//
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// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE-BSD-3-Clause file.
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//! Emulates virtual and hardware devices.
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#[macro_use]
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extern crate bitflags;
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extern crate byteorder;
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extern crate epoll;
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extern crate kvm_bindings;
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extern crate kvm_ioctls;
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extern crate libc;
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#[macro_use]
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extern crate log;
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extern crate vm_device;
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extern crate vm_memory;
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extern crate vmm_sys_util;
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use std::fs::File;
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use std::io;
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#[cfg(feature = "acpi")]
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mod acpi;
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mod bus;
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pub mod ioapic;
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pub mod legacy;
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#[cfg(feature = "acpi")]
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pub use self::acpi::{AcpiGEDDevice, AcpiShutdownDevice};
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pub use self::bus::{Bus, BusDevice, Error as BusError};
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pub type DeviceEventT = u16;
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/// The payload is used to handle events where the internal state of the VirtIO device
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/// needs to be changed.
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pub enum EpollHandlerPayload {
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/// DrivePayload(disk_image)
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DrivePayload(File),
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/// Events that do not need a payload.
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Empty,
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}
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type Result<T> = std::result::Result<T, Error>;
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pub trait EpollHandler: Send {
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fn handle_event(
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&mut self,
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device_event: DeviceEventT,
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event_flags: u32,
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payload: EpollHandlerPayload,
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) -> Result<()>;
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}
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#[derive(Debug)]
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pub enum Error {
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FailedReadingQueue {
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event_type: &'static str,
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underlying: io::Error,
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},
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FailedReadTap,
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FailedSignalingUsedQueue(io::Error),
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PayloadExpected,
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UnknownEvent {
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device: &'static str,
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event: DeviceEventT,
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},
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IoError(io::Error),
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}
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bitflags! {
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pub struct HotPlugNotificationFlags: u8 {
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const NO_DEVICES_CHANGED = 0;
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const CPU_DEVICES_CHANGED = 0b1;
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const MEMORY_DEVICES_CHANGED = 0b10;
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}
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}
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