Method vcpu_set_processor_features

hypervisor/src/kvm/mod.rs:2623–2665

(
        &self,
        vm: &dyn crate::Vm,
        kvi: &mut crate::VcpuInit,
        id: u32,
    )

    #[cfg(target_arch = "aarch64")]
    fn vcpu_set_processor_features(
        &self,
        vm: &dyn crate::Vm,
        kvi: &mut crate::VcpuInit,
        id: u32,
    ) -> cpu::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 kvm_kvi: kvm_bindings::kvm_vcpu_init = (*kvi).into();

        // We already checked that the capability is supported.
        kvm_kvi.features[0] |= 1 << kvm_bindings::KVM_ARM_VCPU_PSCI_0_2;
        if vm
            .as_any()
            .downcast_ref::<crate::kvm::KvmVm>()
            .unwrap()
            .check_extension(Cap::ArmPmuV3)
        {
            kvm_kvi.features[0] |= 1 << kvm_bindings::KVM_ARM_VCPU_PMU_V3;
        }

        if sve_supported
            && vm
                .as_any()
                .downcast_ref::<crate::kvm::KvmVm>()
                .unwrap()
                .check_extension(Cap::ArmSve)
        {
            kvm_kvi.features[0] |= 1 << kvm_bindings::KVM_ARM_VCPU_SVE;
        }

        // Non-boot cpus are powered off initially.
        if id > 0 {
            kvm_kvi.features[0] |= 1 << kvm_bindings::KVM_ARM_VCPU_POWER_OFF;
        }

        *kvi = kvm_kvi.into();

        Ok(())
    }

    ///
    /// Return VcpuInit with default value set