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vmm: interrupt: put KVM code into a kvm module

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2020-06-27 16:32:51 +00:00 committed by Rob Bradford
parent c31e747005
commit 2b8accf49a
2 changed files with 70 additions and 68 deletions
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2
vmm/src/device_manager.rs
View File

@ -14,7 +14,7 @@ use crate::config::ConsoleOutputMode;
use crate::config::DeviceConfig;
use crate::config::{DiskConfig, FsConfig, NetConfig, PmemConfig, VmConfig, VsockConfig};
use crate::device_tree::{DeviceNode, DeviceTree};
use crate::interrupt::{KvmMsiInterruptManager, LegacyUserspaceInterruptManager};
use crate::interrupt::{kvm::KvmMsiInterruptManager, LegacyUserspaceInterruptManager};
use crate::memory_manager::{Error as MemoryManagerError, MemoryManager};
#[cfg(feature = "pci_support")]
use crate::PciDeviceInfo;

136
vmm/src/interrupt.rs
View File

@ -4,7 +4,6 @@
//
use devices::interrupt_controller::InterruptController;
use hypervisor::kvm::{kvm_irq_routing, kvm_irq_routing_entry, KVM_IRQ_ROUTING_MSI};
use std::collections::HashMap;
use std::io;
@ -108,8 +107,6 @@ pub struct RoutingEntry<E> {
masked: bool,
}
type KvmRoutingEntry = RoutingEntry<kvm_irq_routing_entry>;
pub struct MsiInterruptGroup<E> {
vm_fd: Arc<dyn hypervisor::Vm>,
gsi_msi_routes: Arc<Mutex<HashMap<u32, RoutingEntry<E>>>>,
@ -124,34 +121,6 @@ pub trait RoutingEntryExt {
fn make_entry(gsi: u32, config: &InterruptSourceConfig) -> Result<Box<Self>>;
}
impl RoutingEntryExt for KvmRoutingEntry {
fn make_entry(gsi: u32, config: &InterruptSourceConfig) -> Result<Box<Self>> {
if let InterruptSourceConfig::MsiIrq(cfg) = &config {
let mut kvm_route = kvm_irq_routing_entry {
gsi,
type_: KVM_IRQ_ROUTING_MSI,
..Default::default()
};
kvm_route.u.msi.address_lo = cfg.low_addr;
kvm_route.u.msi.address_hi = cfg.high_addr;
kvm_route.u.msi.data = cfg.data;
let kvm_entry = KvmRoutingEntry {
route: kvm_route,
masked: false,
};
return Ok(Box::new(kvm_entry));
}
Err(io::Error::new(
io::ErrorKind::Other,
"Interrupt config type not supported",
))
}
}
impl<E> MsiInterruptGroup<E> {
fn new(
vm_fd: Arc<dyn hypervisor::Vm>,
@ -166,40 +135,6 @@ impl<E> MsiInterruptGroup<E> {
}
}
type KvmMsiInterruptGroup = MsiInterruptGroup<kvm_irq_routing_entry>;
impl MsiInterruptGroupOps for KvmMsiInterruptGroup {
fn set_gsi_routes(&self) -> Result<()> {
let gsi_msi_routes = self.gsi_msi_routes.lock().unwrap();
let mut entry_vec: Vec<kvm_irq_routing_entry> = Vec::new();
for (_, entry) in gsi_msi_routes.iter() {
if entry.masked {
continue;
}
entry_vec.push(entry.route);
}
let mut irq_routing =
vec_with_array_field::<kvm_irq_routing, kvm_irq_routing_entry>(entry_vec.len());
irq_routing[0].nr = entry_vec.len() as u32;
irq_routing[0].flags = 0;
unsafe {
let entries: &mut [kvm_irq_routing_entry] =
irq_routing[0].entries.as_mut_slice(entry_vec.len());
entries.copy_from_slice(&entry_vec);
}
self.vm_fd.set_gsi_routing(&irq_routing[0]).map_err(|e| {
io::Error::new(
io::ErrorKind::Other,
format!("Failed setting GSI routing: {}", e),
)
})
}
}
impl<E> InterruptSourceGroup for MsiInterruptGroup<E>
where
E: Send + Sync,
@ -345,8 +280,6 @@ pub struct MsiInterruptManager<E> {
gsi_msi_routes: Arc<Mutex<HashMap<u32, RoutingEntry<E>>>>,
}
pub type KvmMsiInterruptManager = MsiInterruptManager<kvm_irq_routing_entry>;
impl LegacyUserspaceInterruptManager {
pub fn new(ioapic: Arc<Mutex<dyn InterruptController>>) -> Self {
LegacyUserspaceInterruptManager { ioapic }
@ -417,3 +350,72 @@ where
Ok(())
}
}
pub mod kvm {
use super::*;
use hypervisor::kvm::{kvm_irq_routing, kvm_irq_routing_entry, KVM_IRQ_ROUTING_MSI};
type KvmMsiInterruptGroup = MsiInterruptGroup<kvm_irq_routing_entry>;
type KvmRoutingEntry = RoutingEntry<kvm_irq_routing_entry>;
pub type KvmMsiInterruptManager = MsiInterruptManager<kvm_irq_routing_entry>;
impl RoutingEntryExt for KvmRoutingEntry {
fn make_entry(gsi: u32, config: &InterruptSourceConfig) -> Result<Box<Self>> {
if let InterruptSourceConfig::MsiIrq(cfg) = &config {
let mut kvm_route = kvm_irq_routing_entry {
gsi,
type_: KVM_IRQ_ROUTING_MSI,
..Default::default()
};
kvm_route.u.msi.address_lo = cfg.low_addr;
kvm_route.u.msi.address_hi = cfg.high_addr;
kvm_route.u.msi.data = cfg.data;
let kvm_entry = KvmRoutingEntry {
route: kvm_route,
masked: false,
};
return Ok(Box::new(kvm_entry));
}
Err(io::Error::new(
io::ErrorKind::Other,
"Interrupt config type not supported",
))
}
}
impl MsiInterruptGroupOps for KvmMsiInterruptGroup {
fn set_gsi_routes(&self) -> Result<()> {
let gsi_msi_routes = self.gsi_msi_routes.lock().unwrap();
let mut entry_vec: Vec<kvm_irq_routing_entry> = Vec::new();
for (_, entry) in gsi_msi_routes.iter() {
if entry.masked {
continue;
}
entry_vec.push(entry.route);
}
let mut irq_routing =
vec_with_array_field::<kvm_irq_routing, kvm_irq_routing_entry>(entry_vec.len());
irq_routing[0].nr = entry_vec.len() as u32;
irq_routing[0].flags = 0;
unsafe {
let entries: &mut [kvm_irq_routing_entry] =
irq_routing[0].entries.as_mut_slice(entry_vec.len());
entries.copy_from_slice(&entry_vec);
}
self.vm_fd.set_gsi_routing(&irq_routing[0]).map_err(|e| {
io::Error::new(
io::ErrorKind::Other,
format!("Failed setting GSI routing: {}", e),
)
})
}
}
}