Method init

vmm/src/cpu.rs:609–633

(&self, vm: &dyn hypervisor::Vm)

    /// Initializes an aarch64 specific vcpu for booting Linux.
    #[cfg(target_arch = "aarch64")]
    pub fn init(&self, vm: &dyn hypervisor::Vm) -> Result<()> {
        use std::arch::is_aarch64_feature_detected;
        #[allow(clippy::nonminimal_bool)]
        let sve_supported =
            is_aarch64_feature_detected!("sve") || is_aarch64_feature_detected!("sve2");
        let mut kvi = self.vcpu.create_vcpu_init();

        // This reads back the kernel's preferred target type.
        vm.get_preferred_target(&mut kvi)
            .map_err(Error::VcpuArmPreferredTarget)?;

        self.vcpu
            .vcpu_set_processor_features(vm, &mut kvi, self.id)
            .map_err(Error::VcpuSetProcessorFeatures)?;

        self.vcpu.vcpu_init(&kvi).map_err(Error::VcpuArmInit)?;

        if sve_supported {
            let finalized_features = self.vcpu.vcpu_get_finalized_features();
            self.vcpu
                .vcpu_finalize(finalized_features)
                .map_err(Error::VcpuArmFinalize)?;
        }
        Ok(())
    }

    /// Runs the VCPU until it exits, returning the reason.
    ///