tmk_vmm/
paravisor_vmm.rs

1// Copyright (c) Microsoft Corporation.
2// Licensed under the MIT License.
3
4//! Support for running as a paravisor VMM.
5
6#![cfg(target_os = "linux")]
7
8use crate::run::RunContext;
9use crate::run::RunnerBuilder;
10use crate::run::TestResult;
11use guestmem::GuestMemory;
12use std::sync::Arc;
13use virt::Partition;
14use virt_mshv_vtl::UhLateParams;
15use virt_mshv_vtl::UhPartitionNewParams;
16use virt_mshv_vtl::UhProcessorBox;
17
18impl RunContext<'_> {
19    pub async fn run_paravisor_vmm(
20        &mut self,
21        isolation: virt::IsolationType,
22        test: &crate::load::TestInfo,
23    ) -> anyhow::Result<TestResult> {
24        let params = UhPartitionNewParams {
25            isolation,
26            hide_isolation: false,
27            lower_vtl_memory_layout: &self.state.memory_layout,
28            topology: &self.state.processor_topology,
29            cvm_cpuid_info: None,
30            snp_secrets: None,
31            vtom: None,
32            handle_synic: true,
33            no_sidecar_hotplug: false,
34            use_mmio_hypercalls: false,
35            intercept_debug_exceptions: false,
36        };
37        let p = virt_mshv_vtl::UhProtoPartition::new(params, |_| self.state.driver.clone())?;
38
39        let m = underhill_mem::init(&underhill_mem::Init {
40            processor_topology: &self.state.processor_topology,
41            isolation,
42            vtl0_alias_map_bit: None,
43            vtom: None,
44            mem_layout: &self.state.memory_layout,
45            complete_memory_layout: &self.state.memory_layout,
46            boot_init: None,
47            shared_pool: &[],
48            maximum_vtl: hvdef::Vtl::Vtl0,
49        })
50        .await?;
51
52        let (partition, vps) = p
53            .build(UhLateParams {
54                gm: [
55                    m.vtl0().clone(),
56                    m.vtl1().cloned().unwrap_or(GuestMemory::empty()),
57                ]
58                .into(),
59                vtl0_kernel_exec_gm: m.vtl0().clone(),
60                vtl0_user_exec_gm: m.vtl0().clone(),
61                #[cfg(guest_arch = "x86_64")]
62                cpuid: Vec::new(),
63                crash_notification_send: mesh::channel().0,
64                vmtime: self.vmtime_source,
65                cvm_params: None,
66                vmbus_relay: false,
67            })
68            .await?;
69
70        let partition = Arc::new(partition);
71
72        let mut threads = Vec::new();
73        let r = self
74            .run(m.vtl0(), partition.caps(), test, async |_this, runner| {
75                let [vp] = vps.try_into().ok().unwrap();
76                threads.push(start_vp(vp, runner).await?);
77                Ok(())
78            })
79            .await?;
80
81        for thread in threads {
82            thread.join().unwrap();
83        }
84
85        // Ensure the partition has not leaked.
86        Arc::into_inner(partition).expect("partition is no longer referenced");
87
88        Ok(r)
89    }
90}
91
92async fn start_vp(
93    mut vp: UhProcessorBox,
94    mut runner: RunnerBuilder,
95) -> anyhow::Result<std::thread::JoinHandle<()>> {
96    let vp_thread = std::thread::spawn(move || {
97        let pool = pal_uring::IoUringPool::new("vp", 256).unwrap();
98        let driver = pool.client().initiator().clone();
99        pool.client().set_idle_task(async move |mut control| {
100            let vp = vp
101                .bind_processor::<virt_mshv_vtl::HypervisorBacked>(&driver, Some(&mut control))
102                .unwrap();
103
104            runner.build(vp).unwrap().run_vp().await;
105        });
106        pool.run()
107    });
108    Ok(vp_thread)
109}
tmk_vmm/paravisor_vmm.rs

tmk_vmm/
paravisor_vmm.rs
