This chapter describes emulated devices in crosvm. These devices work like hardware for the guest.
List of devices
Here is a (non-comprehensive) list of emulated devices provided by crosvm.
CMOS/RTC- Used to get the current calendar time.
i8042- Used by the guest kernel to exit crosvm.
serial- x86 I/O port driven serial devices that print to stdout and take input from stdin.
balloon- Allows the host to reclaim the guest's memories.
block- Basic read/write block device.
console- Input and outputs on console.
fs- Shares file systems over the FUSE protocol.
gpu- Graphics adapter.
input- Creates virtual human interface devices such as keyboards.
iommu- Emulates an IOMMU device to manage DMA from endpoints in the guest.
net- Device to interface the host and guest networks.
p9- Shares file systems over the 9P protocol.
pmem- Persistent memory.
rng- Entropy source used to seed guest OS's entropy pool.
snd- Encodes and decodes audio streams.
tpm- Creates a TPM (Trusted Platform Module) device backed by libtpm2 simulator or vTPM daemon.
video- Allows the guest to leverage the host's video capabilities.
wayland- Allows the guest to use the host's Wayland socket.
vsock- Enables use of virtual sockets for the guest.
vhost-user- VirtIO devices which offloads the device implementation to another process through the vhost-user protocol.
- vmm side: Shares its virtqueues.
- device side: Consumes virtqueues.