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vmm: Factorize VM related information into a structure

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In order to fix the clippy error complaining about the number of
arguments passed to a function exceeding the maximum of 7 arguments,
this patch factorizes those parameters into a more global one called
VmInfo.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-08-01 09:27:23 -07:00 committed by Rob Bradford
parent c0756c429d
commit 532f6a96f3
1 changed files with 60 additions and 107 deletions
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167
vmm/src/vm.rs
View File

@ -448,6 +448,12 @@ impl Vcpu {
}
}
struct VmInfo<'a> {
memory: GuestMemoryMmap,
vm_fd: &'a Arc<VmFd>,
vm_cfg: &'a VmConfig<'a>,
}
struct BusInfo<'a> {
io: &'a mut devices::Bus,
mmio: &'a mut devices::Bus,
@ -521,10 +527,8 @@ struct DeviceManager {
impl DeviceManager {
fn new(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
msi_capable: bool,
userspace_ioapic: bool,
mut mem_slots: u32,
@ -539,7 +543,9 @@ impl DeviceManager {
let ioapic = if userspace_ioapic {
// Create IOAPIC
Some(Arc::new(Mutex::new(ioapic::Ioapic::new(vm_fd.clone()))))
Some(Arc::new(Mutex::new(ioapic::Ioapic::new(
vm_info.vm_fd.clone(),
))))
} else {
None
};
@ -549,9 +555,9 @@ impl DeviceManager {
ioapic: &ioapic,
};
let serial_writer: Option<Box<io::Write + Send>> = match vm_cfg.serial.mode {
let serial_writer: Option<Box<io::Write + Send>> = match vm_info.vm_cfg.serial.mode {
ConsoleOutputMode::File => Some(Box::new(
File::create(vm_cfg.serial.file.unwrap())
File::create(vm_info.vm_cfg.serial.file.unwrap())
.map_err(DeviceManagerError::SerialOutputFileOpen)?,
)),
ConsoleOutputMode::Tty => Some(Box::new(stdout())),
@ -564,7 +570,8 @@ impl DeviceManager {
Box::new(UserIoapicIrq::new(ioapic.clone(), serial_irq))
} else {
let serial_evt = EventFd::new(EFD_NONBLOCK).map_err(DeviceManagerError::EventFd)?;
vm_fd
vm_info
.vm_fd
.register_irqfd(serial_evt.as_raw_fd(), serial_irq as u32)
.map_err(DeviceManagerError::Irq)?;
@ -588,9 +595,9 @@ impl DeviceManager {
let pci_root = PciRoot::new(None);
let mut pci = PciConfigIo::new(pci_root);
let console_writer: Option<Box<io::Write + Send>> = match vm_cfg.console.mode {
let console_writer: Option<Box<io::Write + Send>> = match vm_info.vm_cfg.console.mode {
ConsoleOutputMode::File => Some(Box::new(
File::create(vm_cfg.console.file.unwrap())
File::create(vm_info.vm_cfg.console.file.unwrap())
.map_err(DeviceManagerError::ConsoleOutputFileOpen)?,
)),
ConsoleOutputMode::Tty => Some(Box::new(stdout())),
@ -601,9 +608,9 @@ impl DeviceManager {
.map_err(DeviceManagerError::CreateVirtioConsole)?;
DeviceManager::add_virtio_pci_device(
Box::new(virtio_console_device),
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
&mut pci,
&mut buses,
&interrupt_info,
@ -614,25 +621,15 @@ impl DeviceManager {
};
DeviceManager::add_virtio_devices(
memory.clone(),
vm_info,
allocator,
vm_fd,
&vm_cfg,
&mut pci,
&mut buses,
&interrupt_info,
&mut mem_slots,
)?;
DeviceManager::add_vfio_devices(
memory.clone(),
allocator,
vm_fd,
&vm_cfg,
&mut pci,
&mut buses,
mem_slots,
)?;
DeviceManager::add_vfio_devices(vm_info, allocator, &mut pci, &mut buses, mem_slots)?;
let pci = Arc::new(Mutex::new(pci));
@ -649,65 +646,29 @@ impl DeviceManager {
}
fn add_virtio_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
mut mem_slots: &mut u32,
) -> DeviceManagerResult<()> {
// Add virtio-blk if required
DeviceManager::add_virtio_block_devices(
memory.clone(),
allocator,
vm_fd,
&vm_cfg,
pci,
buses,
&interrupt_info,
)?;
DeviceManager::add_virtio_block_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
// Add virtio-net if required
DeviceManager::add_virtio_net_devices(
memory.clone(),
allocator,
vm_fd,
&vm_cfg,
pci,
buses,
&interrupt_info,
)?;
DeviceManager::add_virtio_net_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
// Add virtio-rng if required
DeviceManager::add_virtio_rng_devices(
memory.clone(),
allocator,
vm_fd,
&vm_cfg,
pci,
buses,
&interrupt_info,
)?;
DeviceManager::add_virtio_rng_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
// Add virtio-fs if required
DeviceManager::add_virtio_fs_devices(
memory.clone(),
allocator,
vm_fd,
&vm_cfg,
pci,
buses,
&interrupt_info,
)?;
DeviceManager::add_virtio_fs_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
// Add virtio-pmem if required
DeviceManager::add_virtio_pmem_devices(
memory.clone(),
vm_info,
allocator,
vm_fd,
&vm_cfg,
pci,
buses,
&interrupt_info,
@ -718,15 +679,13 @@ impl DeviceManager {
}
fn add_virtio_block_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
) -> DeviceManagerResult<()> {
if let Some(disk_list_cfg) = &vm_cfg.disks {
if let Some(disk_list_cfg) = &vm_info.vm_cfg.disks {
for disk_cfg in disk_list_cfg.iter() {
// Open block device path
let raw_img: File = OpenOptions::new()
@ -757,9 +716,9 @@ impl DeviceManager {
DeviceManager::add_virtio_pci_device(
block,
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
pci,
buses,
&interrupt_info,
@ -771,16 +730,14 @@ impl DeviceManager {
}
fn add_virtio_net_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
) -> DeviceManagerResult<()> {
// Add virtio-net if required
if let Some(net_list_cfg) = &vm_cfg.net {
if let Some(net_list_cfg) = &vm_info.vm_cfg.net {
for net_cfg in net_list_cfg.iter() {
let mut virtio_net_device: vm_virtio::Net;
@ -796,9 +753,9 @@ impl DeviceManager {
DeviceManager::add_virtio_pci_device(
Box::new(virtio_net_device),
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
pci,
buses,
&interrupt_info,
@ -810,24 +767,22 @@ impl DeviceManager {
}
fn add_virtio_rng_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
) -> DeviceManagerResult<()> {
// Add virtio-rng if required
if let Some(rng_path) = vm_cfg.rng.src.to_str() {
if let Some(rng_path) = vm_info.vm_cfg.rng.src.to_str() {
let virtio_rng_device =
vm_virtio::Rng::new(rng_path).map_err(DeviceManagerError::CreateVirtioRng)?;
DeviceManager::add_virtio_pci_device(
Box::new(virtio_rng_device),
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
pci,
buses,
&interrupt_info,
@ -838,16 +793,14 @@ impl DeviceManager {
}
fn add_virtio_fs_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
) -> DeviceManagerResult<()> {
// Add virtio-fs if required
if let Some(fs_list_cfg) = &vm_cfg.fs {
if let Some(fs_list_cfg) = &vm_info.vm_cfg.fs {
for fs_cfg in fs_list_cfg.iter() {
if let Some(fs_sock) = fs_cfg.sock.to_str() {
let virtio_fs_device = vm_virtio::Fs::new(
@ -860,9 +813,9 @@ impl DeviceManager {
DeviceManager::add_virtio_pci_device(
Box::new(virtio_fs_device),
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
pci,
buses,
&interrupt_info,
@ -875,17 +828,15 @@ impl DeviceManager {
}
fn add_virtio_pmem_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
interrupt_info: &InterruptInfo,
mem_slots: &mut u32,
) -> DeviceManagerResult<()> {
// Add virtio-pmem if required
if let Some(pmem_list_cfg) = &vm_cfg.pmem {
if let Some(pmem_list_cfg) = &vm_info.vm_cfg.pmem {
for pmem_cfg in pmem_list_cfg.iter() {
let size = pmem_cfg.size;
@ -932,7 +883,7 @@ impl DeviceManager {
flags: 0,
};
// Safe because the guest regions are guaranteed not to overlap.
let _ = unsafe { vm_fd.set_user_memory_region(mem_region) };
let _ = unsafe { vm_info.vm_fd.set_user_memory_region(mem_region) };
// Increment the KVM slot number
*mem_slots += 1;
@ -943,9 +894,9 @@ impl DeviceManager {
DeviceManager::add_virtio_pci_device(
Box::new(virtio_pmem_device),
memory.clone(),
vm_info.memory.clone(),
allocator,
vm_fd,
vm_info.vm_fd,
pci,
buses,
&interrupt_info,
@ -968,26 +919,24 @@ impl DeviceManager {
}
fn add_vfio_devices(
memory: GuestMemoryMmap,
vm_info: &VmInfo,
allocator: &mut SystemAllocator,
vm_fd: &Arc<VmFd>,
vm_cfg: &VmConfig,
pci: &mut PciConfigIo,
buses: &mut BusInfo,
mem_slots: u32,
) -> DeviceManagerResult<()> {
let mut mem_slot = mem_slots;
if let Some(device_list_cfg) = &vm_cfg.devices {
if let Some(device_list_cfg) = &vm_info.vm_cfg.devices {
// Create the KVM VFIO device
let device_fd = DeviceManager::create_kvm_device(vm_fd)?;
let device_fd = DeviceManager::create_kvm_device(vm_info.vm_fd)?;
let device_fd = Arc::new(device_fd);
for device_cfg in device_list_cfg.iter() {
let vfio_device =
VfioDevice::new(device_cfg.path, device_fd.clone(), memory.clone())
VfioDevice::new(device_cfg.path, device_fd.clone(), vm_info.memory.clone())
.map_err(DeviceManagerError::VfioCreate)?;
let mut vfio_pci_device = VfioPciDevice::new(vm_fd, allocator, vfio_device)
let mut vfio_pci_device = VfioPciDevice::new(vm_info.vm_fd, allocator, vfio_device)
.map_err(DeviceManagerError::VfioPciCreate)?;
let bars = vfio_pci_device
@ -995,7 +944,7 @@ impl DeviceManager {
.map_err(DeviceManagerError::AllocateBars)?;
mem_slot = vfio_pci_device
.map_mmio_regions(vm_fd, mem_slot)
.map_mmio_regions(vm_info.vm_fd, mem_slot)
.map_err(DeviceManagerError::VfioMapRegion)?;
let vfio_pci_device = Arc::new(Mutex::new(vfio_pci_device));
@ -1382,11 +1331,15 @@ impl<'a> Vm<'a> {
.ok_or(Error::MemoryRangeAllocation)?;
}
let vm_info = VmInfo {
memory: guest_memory.clone(),
vm_fd: &fd,
vm_cfg: &config,
};
let device_manager = DeviceManager::new(
guest_memory.clone(),
&vm_info,
&mut allocator,
&fd,
&config,
msi_capable,
userspace_ioapic,
ram_regions.len() as u32,