Note:
Currently developing the hardware-assisted virtualization project hypocaust-2
Hypocaust is an experimental S-mode trap and emulate type-1 hypervisor for RISC-V. It is currently targeted at QEMU's virt machine type. It can run on RustSBI currently. It can boot and run minikernel now.
- QEMU 7.0.0
- rust 1.66.0
git clone https://github.com/KuangjuX/hypocaust.git
cd hypocaust
git submodule update --init
make qemu
- DRAM Memory Region: 0x80000000 - 0x140000000 3GB
- hypervisor: 128MB
- Guest Kernel: 128MB
| HVA Start | HVA End | HPA Start | HPA End | Memory Region |
|---|---|---|---|---|
| 0x80000000 | 0x80200000 | 0x80000000 | 0x80200000 | RustSBI |
| 0x80200000 | 0xC0000000 | 0x80200000 | 0x88000000 | hypervisor |
| 0x88000000 | 0x8FFFFFFF | 0x88000000 | 0x8FFFFFFF | Guest Kernel 1 |
| 0x90000000 | 0x97FFFFFF | 0x90000000 | 0x97FFFFFF | Guest Kernel 2 |
| 0x98000000 | 0x9FFFFFFF | 0x98000000 | 0x9FFFFFFF | Guest Kernel 3 |
| 0x100000000 | 0x17FFFFFFF | 0x100000000 | 0x17FFFFFFF | Guest Kernel 1 Shadow Page Table |
| VA Start | VA End | Memory Region |
|---|---|---|
| 0xFFFFFFFFFFFFF000 | 0xFFFFFFFFFFFFFFFF | Trampoline |
| 0xFFFFFFFFFFFFE000 | 0xFFFFFFFFFFFFEFFF | Trap Context |
| GVA | GPA | HVA | Memory Region |
|---|---|---|---|
| 0x80000000 - 0x87FFFFFF | 0x80000000 - 0x87FFFFFF | 0x88000000 - 0x8FFFFFFF | Guest Kernel 1 |
| 0x80000000 - 0x87FFFFFF | 0x80000000 - 0x87FFFFFF | 0x90000000 - 0x97FFFFFF | Guest Kernel 2 |
| 0x80000000 - 0x87FFFFFF | 0x80000000 - 0x87FFFFFF | 0x98000000 - 0x9FFFFFFF | Guest Kernel 3 |
- QEMU virt machine type
- Load guest kernel && Run guest kernel
- Trap and emulate of privileged instructions(CSR related and SFENCE>VMA)
- Shadow page tables
- Synchronize guest page table & shadow page table
- Foward Expections & Interrupts
- Timers
- Serial IO emulate
- Handle external interrupts
- Expose and/or emulate peripherals
- passthrough virtio block and networkd devices
- multicore supported
- multiguest supported
See also:
MIT License
Copyright (c) 2022 ChengXiang Qi
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.