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An experimental hypervisor library written in Rust to build both type-1 and type-2 hypervisors.
Supported architecture: x86_64 (Intel VMX).
- current rustc -- rustc 1.56.0-nightly (08095fc1f 2021-07-26)
- current rust-toolchain -- nightly
See the UEFI example for more details.
use rvm::*;
const ENTRY: u64 = 0x2000;
fn run_hypervisor() -> RvmResult {
// create a guest physical memory set.
let gpm = DefaultGuestPhysMemorySet::new();
// create a guest.
let guest = Guest::new(gpm)?;
// create a vcpu.
let mut vcpu = Vcpu::new(ENTRY, guest.clone())?;
// map the guest physical memory region [0, 0x8000) to the host phyical
// memory region [0xC0000, 0xC8000).
let host_paddr = 0xC0000;
guest.add_memory_region(0, 0x8000, Some(0xC0000))?;
// I/O instructions with port 0x233-0x234 can cause VM exit and `vcpu.resume()`
// to return.
guest.set_trap(TrapKind::GuestTrapIo, 0x233, 2, None, 0xdeadbeef)?;
// The bootstrap processor is in IA-32e mode and enabled paging, you need to
// setup guest page table.
setup_guest_page_table(host_paddr);
// run the VCPU and block, until the specified traps occurs.
let packet = vcpu.resume()?;
// get the VCPU state.
let state = vcpu.read_state()?;
Ok(())
}RVM is used as the hypervisor module of the following OSes:
It can also run in linux as a kernel module and replace the KVM hypervisor to support simple guest OSes such as uCore. See the ko example and rcore-vmm for more details.