Method configure

vmm/src/cpu.rs:544–593

Configures a vcpu and should be called once per vcpu when created. # Arguments `kernel_entry_point` - Kernel entry point address in guest memory and boot protocol used. `guest_memory` - Guest memory. `cpuid` - (x86_64) CpuId, wrapper over the `kvm_cpuid2` structure.

(
        &mut self,
        #[cfg(target_arch = "aarch64")] vm: &dyn hypervisor::Vm,
        boot_setup: Option<(EntryPoint, &GuestMemoryAtomic<GuestMemoryMmap>)>,
        #[cfg(target_arch = "x86_64

    /// * `guest_memory` - Guest memory.
    /// * `cpuid` - (x86_64) CpuId, wrapper over the `kvm_cpuid2` structure.
    pub fn configure(
        &mut self,
        #[cfg(target_arch = "aarch64")] vm: &dyn hypervisor::Vm,
        boot_setup: Option<(EntryPoint, &GuestMemoryAtomic<GuestMemoryMmap>)>,
        #[cfg(target_arch = "x86_64")] cpuid: Vec<CpuIdEntry>,
        #[cfg(target_arch = "x86_64")] kvm_hyperv: bool,
        #[cfg(target_arch = "x86_64")] topology: (u16, u16, u16, u16),
        #[cfg(target_arch = "x86_64")] nested: bool,
        #[cfg(feature = "igvm")] igvm_enabled: bool,
    ) -> Result<()> {
        #[cfg(target_arch = "aarch64")]
        {
            self.init(vm)?;
            self.mpidr = arch::configure_vcpu(self.vcpu.as_ref(), self.id, boot_setup)
                .map_err(Error::VcpuConfiguration)?;
        }
        #[cfg(target_arch = "riscv64")]
        arch::configure_vcpu(self.vcpu.as_ref(), self.id, boot_setup)
            .map_err(Error::VcpuConfiguration)?;
        info!("Configuring vCPU: cpu_id = {}", self.id);
        #[cfg(target_arch = "x86_64")]
        {
            // When IGVM is enabled, skip standard register setup here — the IGVM
            // loader populates vCPU registers from the VMSA via set_sev_control_register
            // (currently KVM-specific; MSHV handles this through its own import path).
            // igvm_enabled is kept as an explicit flag rather than derived from sev_snp
            // state because IGVM could theoretically be used independently of SEV-SNP.
            cfg_if::cfg_if! {
                if #[cfg(feature = "igvm")] {
                    let setup_registers = !igvm_enabled;
                } else {
                    let setup_registers = true;
                }
            }
            arch::configure_vcpu(
                self.vcpu.as_ref(),
                self.id,
                boot_setup,
                cpuid,
                kvm_hyperv,
                self.vendor,
                topology,
                nested,
                setup_registers,
            )
            .map_err(Error::VcpuConfiguration)?;
        }

        Ok(())
    }

    /// Gets the MPIDR register value.
    #[cfg(target_arch = "aarch64")]