Ejemplo n.º 1
0
static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp)
{
    GICv3State *s = KVM_ARM_GICV3(dev);
    KVMARMGICv3Class *kgc = KVM_ARM_GICV3_GET_CLASS(s);
    Error *local_err = NULL;

    DPRINTF("kvm_arm_gicv3_realize\n");

    kgc->parent_realize(dev, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }

    if (s->security_extn) {
        error_setg(errp, "the in-kernel VGICv3 does not implement the "
                   "security extensions");
        return;
    }

    gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL);

    /* Try to create the device via the device control API */
    s->dev_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V3, false);
    if (s->dev_fd < 0) {
        error_setg_errno(errp, -s->dev_fd, "error creating in-kernel VGIC");
        return;
    }

    kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
                      0, &s->num_irq, true);

    /* Tell the kernel to complete VGIC initialization now */
    kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
                      KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);

    kvm_arm_register_device(&s->iomem_dist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
                            KVM_VGIC_V3_ADDR_TYPE_DIST, s->dev_fd);
    kvm_arm_register_device(&s->iomem_redist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
                            KVM_VGIC_V3_ADDR_TYPE_REDIST, s->dev_fd);
}
Ejemplo n.º 2
0
static void kvm_arm_its_realize(DeviceState *dev, Error **errp)
{
    GICv3ITSState *s = ARM_GICV3_ITS_COMMON(dev);
    Error *local_err = NULL;

    s->dev_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_ITS, false);
    if (s->dev_fd < 0) {
        error_setg_errno(errp, -s->dev_fd, "error creating in-kernel ITS");
        return;
    }

    /* explicit init of the ITS */
    kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
                      KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true, &error_abort);

    /* register the base address */
    kvm_arm_register_device(&s->iomem_its_cntrl, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
                            KVM_VGIC_ITS_ADDR_TYPE, s->dev_fd);

    gicv3_its_init_mmio(s, NULL);

    if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
        GITS_CTLR)) {
        error_setg(&s->migration_blocker, "This operating system kernel "
                   "does not support vITS migration");
        migrate_add_blocker(s->migration_blocker, &local_err);
        if (local_err) {
            error_propagate(errp, local_err);
            error_free(s->migration_blocker);
            return;
        }
    } else {
        qemu_add_vm_change_state_handler(vm_change_state_handler, s);
    }

    kvm_msi_use_devid = true;
    kvm_gsi_direct_mapping = false;
    kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled();
}
Ejemplo n.º 3
0
static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp)
{
    GICv3State *s = KVM_ARM_GICV3(dev);
    KVMARMGICv3Class *kgc = KVM_ARM_GICV3_GET_CLASS(s);
    Error *local_err = NULL;
    int i;

    DPRINTF("kvm_arm_gicv3_realize\n");

    kgc->parent_realize(dev, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        return;
    }

    if (s->security_extn) {
        error_setg(errp, "the in-kernel VGICv3 does not implement the "
                   "security extensions");
        return;
    }

    gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL);

    /* Block migration of a KVM GICv3 device: the API for saving and restoring
     * the state in the kernel is not yet finalised in the kernel or
     * implemented in QEMU.
     */
    error_setg(&s->migration_blocker, "vGICv3 migration is not implemented");
    migrate_add_blocker(s->migration_blocker, &local_err);
    if (local_err) {
        error_propagate(errp, local_err);
        error_free(s->migration_blocker);
        return;
    }

    /* Try to create the device via the device control API */
    s->dev_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V3, false);
    if (s->dev_fd < 0) {
        error_setg_errno(errp, -s->dev_fd, "error creating in-kernel VGIC");
        return;
    }

    kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
                      0, &s->num_irq, true);

    /* Tell the kernel to complete VGIC initialization now */
    kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
                      KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);

    kvm_arm_register_device(&s->iomem_dist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
                            KVM_VGIC_V3_ADDR_TYPE_DIST, s->dev_fd);
    kvm_arm_register_device(&s->iomem_redist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
                            KVM_VGIC_V3_ADDR_TYPE_REDIST, s->dev_fd);

    if (kvm_has_gsi_routing()) {
        /* set up irq routing */
        kvm_init_irq_routing(kvm_state);
        for (i = 0; i < s->num_irq - GIC_INTERNAL; ++i) {
            kvm_irqchip_add_irq_route(kvm_state, i, 0, i);
        }

        kvm_gsi_routing_allowed = true;

        kvm_irqchip_commit_routes(kvm_state);
    }
}