My rust's dependencies and dev-dependencies are as follows
[dependencies]
clap = { version = "4.5", features = ["derive"] }
env_logger = "0.11"
libc = "0.2"
log = "0.4"
thiserror = "2.0"
vhost = { version = "0.13", features = ["vhost-user-backend"] }
vhost-user-backend = "0.17"
virtio-bindings = "0.2.5"
virtio-queue = "0.14"
vm-memory = "0.16.1"
vmm-sys-util = "0.12"
[dev-dependencies]
assert_matches = "1.5"
virtio-queue = { version = "0.14", features = ["test-utils"] }
vm-memory = { version = "0.16.1", features = ["backend-mmap", "backend-atomic"] }I use these crates to create a vhost-user-backened to monitor a unix domain socket to communicate with the qemu virtual machine, and my qemu boot orders are like this
./qemu-system-x86_64 \
-m 4G \
-smp 4 \
-machine q35,accel=kvm,mem-merge=off,kernel-irqchip=split,memory-backend=mem \
-object memory-backend-file,id=mem,size=4G,mem-path=/dev/shm,share=on \
-device intel-iommu,intremap=on,caching-mode=on \
-drive file=/secondDisk/zyy/qemu_images/ubuntu22-desktop2-60G.row,format=raw,if=virtio,bus=0,unit=0 \
-nographic \
-netdev user,id=net0,hostfwd=tcp::2226-:22 \
-device virtio-net-pci,netdev=net0 \
-chardev socket,id=char0,path=/secondDisk/zyy/vhost-user-cuda.sock \
-device vhost-user-device-pci,chardev=char0,vq_size=64,num_vqs=1,virtio-id=42,iommu_platform=on
the negotiate features with the front qemu are as follows
fn features(&self) -> u64 {
// this matches the current libvhost defaults except VHOST_F_LOG_ALL
1 << VIRTIO_F_VERSION_1
| 1 << VIRTIO_F_NOTIFY_ON_EMPTY
| 1 << VIRTIO_RING_F_INDIRECT_DESC
| 1 << VIRTIO_RING_F_EVENT_IDX
| 1 << VIRTIO_F_IOMMU_PLATFORM
// Protocol features are optional and must not be defined unless required and must be
// accompanied by the supporting PROTOCOL_FEATURES bits in features.
| VhostUserVirtioFeatures::PROTOCOL_FEATURES.bits()
}
fn protocol_features(&self) -> VhostUserProtocolFeatures {
VhostUserProtocolFeatures::from_bits_truncate(
VhostUserProtocolFeatures::MQ.bits()
| VhostUserProtocolFeatures::REPLY_ACK.bits()
| VhostUserProtocolFeatures::BACKEND_REQ.bits()
| VHOST_USER_PROTOCOL_F_IOTLB,
)
}It raises issue when I try to insert my own kernel model by the command of insmod my_ownmodle.ko, the qemu returns with the results as the picture shows
Moreover, the rust backened alter me that
Fatal error: failed to handle request: handler failed to handle request: Missing memory mapping
How do I fix this?
My rust's dependencies and dev-dependencies are as follows
I use these crates to create a vhost-user-backened to monitor a unix domain socket to communicate with the qemu virtual machine, and my qemu boot orders are like this
the negotiate features with the front qemu are as follows
It raises issue when I try to insert my own kernel model by the command of insmod my_ownmodle.ko, the qemu returns with the results as the picture shows
Moreover, the rust backened alter me that
How do I fix this?