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docs: Update docs for new StratoVirt VMM introduction

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As the StratoVirt VMM has been added, we can update the docs
and make some intoduction to StratoVirt, thus users can know more
about the hypervisor choices.

Fixes: #8645

Signed-off-by: Zhigang Wang <wangzhigang17@huawei.com>
Signed-off-by: Liu Wenyuan <liuwenyuan9@huawei.com>
This commit is contained in:
Zhigang Wang
2024-01-01 21:51:25 +08:00
parent 67b91c1eb3
commit 44b5b88f4c
6 changed files with 53 additions and 14 deletions
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17
docs/design/virtualization.md
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@@ -112,6 +112,22 @@ Devices and features used:
- seccomp filters
- [HTTP OpenAPI](https://github.com/cloud-hypervisor/cloud-hypervisor/blob/main/vmm/src/api/openapi/cloud-hypervisor.yaml)
### StratoVirt/KVM
[StratoVirt](https://gitee.com/openeuler/stratovirt) is an enterprise-level open source VMM oriented to cloud data centers, implements a unified architecture to support Standard-VMs, containers and serverless (Micro-VM). StratoVirt has some competitive advantages, such as lightweight and low resource overhead, fast boot, hardware acceleration, and language-level security with Rust.
Currently, StratoVirt in Kata supports Micro-VM machine type, mainly focus on FaaS cases, supporting device hotplug (virtio block), file-system sharing through virtio fs and so on. Kata Containers with StratoVirt now use virtio-mmio bus as driver, and doesn't support CPU/memory resize nor VFIO, thus doesn't support updating container resources after booted.
Devices and features used currently:
- Micro-VM machine type for FaaS(mmio, no ACPI)
- Virtual Socket(vhost VSOCK、virtio console)
- Virtual Storage(virtio block, mmio)
- Virtual Networking(virtio net, mmio)
- Shared Filesystem(virtio fs)
- Device Hotplugging(virtio block hotplug)
- Entropy Source(virtio RNG)
- QMP API
### Summary
| Solution | release introduced | brief summary |
@@ -119,3 +135,4 @@ Devices and features used:
| Cloud Hypervisor | 1.10 | upstream Cloud Hypervisor with rich feature support, e.g. hotplug, VFIO and FS sharing|
| Firecracker | 1.5 | upstream Firecracker, rust-VMM based, no VFIO, no FS sharing, no memory/CPU hotplug |
| QEMU | 1.0 | upstream QEMU, with support for hotplug and filesystem sharing |
| StratoVirt | 3.3 | upstream StratoVirt with FS sharing and virtio block hotplug, no VFIO, no CPU/memory resize |