virtio-ccw: fix build breakage on windows

event_notifier_get_fd() is not available on windows hosts. Fix this by
moving the calls to event_notifier_get_fd() to the kvm code.

Reported-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 hw/s390x/virtio-ccw.c |    6 ++----
 target-s390x/cpu.h    |   11 +++++++----
 target-s390x/kvm.c    |    5 +++--
 3 files changed, 12 insertions(+), 10 deletions(-)

Il 28/06/2013 09:47, Cornelia Huck ha scritto:
> event_notifier_get_fd() is not available on windows hosts. Fix this by
> moving the calls to event_notifier_get_fd() to the kvm code.
> 
> Reported-by: Stefan Weil <sw@weilnetz.de>
> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
> ---
>  hw/s390x/virtio-ccw.c |    6 ++----
>  target-s390x/cpu.h    |   11 +++++++----
>  target-s390x/kvm.c    |    5 +++--
>  3 files changed, 12 insertions(+), 10 deletions(-)
> 
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index faef5dd..e744957 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -79,8 +79,7 @@ static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n,
>              return r;
>          }
>          virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
> -        r = s390_assign_subch_ioeventfd(event_notifier_get_fd(notifier), sch_id,
> -                                        n, assign);
> +        r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
>          if (r < 0) {
>              error_report("%s: unable to assign ioeventfd: %d", __func__, r);
>              virtio_queue_set_host_notifier_fd_handler(vq, false, false);
> @@ -89,8 +88,7 @@ static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n,
>          }
>      } else {
>          virtio_queue_set_host_notifier_fd_handler(vq, false, false);
> -        s390_assign_subch_ioeventfd(event_notifier_get_fd(notifier), sch_id,
> -                                    n, assign);
> +        s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
>          event_notifier_cleanup(notifier);
>      }
>      return r;
> diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
> index 918c819..741c4e4 100644
> --- a/target-s390x/cpu.h
> +++ b/target-s390x/cpu.h
> @@ -1081,7 +1081,8 @@ void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id,
>  void kvm_s390_crw_mchk(S390CPU *cpu);
>  void kvm_s390_enable_css_support(S390CPU *cpu);
>  int kvm_s390_get_registers_partial(CPUState *cpu);
> -int kvm_s390_assign_subch_ioeventfd(int fd, uint32_t sch, int vq, bool assign);
> +int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
> +                                    int vq, bool assign);
>  #else
>  static inline void kvm_s390_io_interrupt(S390CPU *cpu,
>                                          uint16_t subchannel_id,
> @@ -1100,7 +1101,8 @@ static inline int kvm_s390_get_registers_partial(CPUState *cpu)
>  {
>      return -ENOSYS;
>  }
> -static inline int kvm_s390_assign_subch_ioeventfd(int fd, uint32_t sch, int vq,
> +static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
> +                                                  uint32_t sch, int vq,
>                                                    bool assign)
>  {
>      return -ENOSYS;
> @@ -1131,11 +1133,12 @@ static inline void s390_crw_mchk(S390CPU *cpu)
>      }
>  }
>  
> -static inline int s390_assign_subch_ioeventfd(int fd, uint32_t sch_id, int vq,
> +static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
> +                                              uint32_t sch_id, int vq,
>                                                bool assign)
>  {
>      if (kvm_enabled()) {
> -        return kvm_s390_assign_subch_ioeventfd(fd, sch_id, vq, assign);
> +        return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
>      } else {
>          return -ENOSYS;
>      }
> diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
> index 650d3a5..d8e5c6f 100644
> --- a/target-s390x/kvm.c
> +++ b/target-s390x/kvm.c
> @@ -933,12 +933,13 @@ void kvm_arch_init_irq_routing(KVMState *s)
>  {
>  }
>  
> -int kvm_s390_assign_subch_ioeventfd(int fd, uint32_t sch, int vq, bool assign)
> +int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
> +                                    int vq, bool assign)
>  {
>      struct kvm_ioeventfd kick = {
>          .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
>          KVM_IOEVENTFD_FLAG_DATAMATCH,
> -        .fd = fd,
> +        .fd = event_notifier_get_fd(notifier),
>          .datamatch = vq,
>          .addr = sch,
>          .len = 8,
> 

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>