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vmm: hypervisor: Add support for injecting NMI for MSHV guest

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Currently, we only support injecting NMI for KVM guests but we can do
the same for MSHV guests as well to have feature parity.

Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This commit is contained in:
Jinank Jain 2024-03-05 16:23:31 +05:30 committed by Liu Wei
parent da376a4b37
commit cd116cb24f
3 changed files with 21 additions and 6 deletions
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4
hypervisor/src/cpu.rs
View File

@ -515,7 +515,5 @@ pub trait Vcpu: Send + Sync {
///
/// Trigger NMI interrupt
///
fn nmi(&self) -> Result<()> {
unimplemented!()
}
fn nmi(&self) -> Result<()>;
}

20
hypervisor/src/mshv/mod.rs
View File

@ -14,7 +14,7 @@ use crate::vec_with_array_field;
use crate::vm::{self, InterruptSourceConfig, VmOps};
use crate::HypervisorType;
pub use mshv_bindings::*;
use mshv_ioctls::{set_registers_64, Mshv, NoDatamatch, VcpuFd, VmFd, VmType};
use mshv_ioctls::{set_registers_64, InterruptRequest, Mshv, NoDatamatch, VcpuFd, VmFd, VmType};
use std::any::Any;
use std::collections::HashMap;
use std::sync::{Arc, RwLock};
@ -350,7 +350,6 @@ pub struct MshvVcpu {
cpuid: Vec<CpuIdEntry>,
msrs: Vec<MsrEntry>,
vm_ops: Option<Arc<dyn vm::VmOps>>,
#[cfg(feature = "sev_snp")]
vm_fd: Arc<VmFd>,
}
@ -1328,6 +1327,22 @@ impl cpu::Vcpu for MshvVcpu {
.set_sev_control_register(sev_control_reg)
.map_err(|e| cpu::HypervisorCpuError::SetSevControlRegister(e.into()))
}
///
/// Trigger NMI interrupt
///
fn nmi(&self) -> cpu::Result<()> {
let cfg = InterruptRequest {
interrupt_type: hv_interrupt_type_HV_X64_INTERRUPT_TYPE_NMI,
apic_id: self.vp_index as u64,
level_triggered: false,
vector: 0,
logical_destination_mode: false,
long_mode: false,
};
self.vm_fd
.request_virtual_interrupt(&cfg)
.map_err(|e| cpu::HypervisorCpuError::Nmi(e.into()))
}
}
impl MshvVcpu {
@ -1623,7 +1638,6 @@ impl vm::Vm for MshvVm {
cpuid: Vec::new(),
msrs: self.msrs.clone(),
vm_ops,
#[cfg(feature = "sev_snp")]
vm_fd: self.fd.clone(),
};
Ok(Arc::new(vcpu))

3
vmm/src/seccomp_filters.rs
View File

@ -182,6 +182,7 @@ mod mshv {
pub const MSHV_WRITE_GPA: u64 = 0x4020_b833;
pub const MSHV_SEV_SNP_AP_CREATE: u64 = 0x4010_b834;
pub const MSHV_ISSUE_PSP_GUEST_REQUEST: u64 = 0x4010_b831;
pub const MSHV_ASSERT_INTERRUPT: u64 = 0x4018_b809;
}
#[cfg(feature = "mshv")]
use mshv::*;
@ -200,6 +201,7 @@ fn create_vmm_ioctl_seccomp_rule_common_mshv() -> Result<Vec<SeccompRule>, Backe
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_GET_VP_REGISTERS)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_SET_VP_REGISTERS)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_RUN_VP)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_ASSERT_INTERRUPT)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_GET_VP_STATE)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_SET_VP_STATE)?],
and![Cond::new(
@ -705,6 +707,7 @@ fn create_vcpu_ioctl_seccomp_rule_mshv() -> Result<Vec<SeccompRule>, BackendErro
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_SET_VP_REGISTERS)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_MAP_GUEST_MEMORY)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_UNMAP_GUEST_MEMORY)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_ASSERT_INTERRUPT)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_VP_TRANSLATE_GVA)?],
and![Cond::new(1, ArgLen::Dword, Eq, MSHV_GET_VP_CPUID_VALUES)?],
and![Cond::new(