Re: [Qemu-devel] [PATCH 1/6] pci: add VMSTATE_MSIX

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, May 07, 2013 at 03:34:31PM +0200, Gerd Hoffmann wrote:
> Using a trick cut+pasted from vmstate_scsi_device
> to wind up msix_save and msix_load.

Any reason this is not signed-off by you?

> ---
>  hw/pci/msix.c         |   33 +++++++++++++++++++++++++++++++++
>  include/hw/pci/msix.h |   11 +++++++++++
>  2 files changed, 44 insertions(+)
> 
> diff --git a/hw/pci/msix.c b/hw/pci/msix.c
> index e231a0d..6da75ec 100644
> --- a/hw/pci/msix.c
> +++ b/hw/pci/msix.c
> @@ -569,3 +569,36 @@ void msix_unset_vector_notifiers(PCIDevice *dev)
>      dev->msix_vector_release_notifier = NULL;
>      dev->msix_vector_poll_notifier = NULL;
>  }
> +
> +static void put_msix_state(QEMUFile *f, void *pv, size_t size)
> +{
> +    msix_save(pv, f);
> +}
> +
> +static int get_msix_state(QEMUFile *f, void *pv, size_t size)
> +{
> +    msix_load(pv, f);
> +    return 0;
> +}
> +
> +static VMStateInfo vmstate_info_msix = {
> +    .name = "msix state",
> +    .get  = get_msix_state,
> +    .put  = put_msix_state,
> +};
> +
> +const VMStateDescription vmstate_msix = {
> +    .name = "msix",
> +    .fields = (VMStateField[]) {
> +        {
> +            .name         = "msix",
> +            .version_id   = 0,
> +            .field_exists = NULL,
> +            .size         = 0,   /* ouch */
> +            .info         = &vmstate_info_msix,
> +            .flags        = VMS_SINGLE,
> +            .offset       = 0,
> +        },
> +        VMSTATE_END_OF_LIST()
> +    }
> +};
> diff --git a/include/hw/pci/msix.h b/include/hw/pci/msix.h
> index e648410..954d82b 100644
> --- a/include/hw/pci/msix.h
> +++ b/include/hw/pci/msix.h
> @@ -43,4 +43,15 @@ int msix_set_vector_notifiers(PCIDevice *dev,
>                                MSIVectorReleaseNotifier release_notifier,
>                                MSIVectorPollNotifier poll_notifier);
>  void msix_unset_vector_notifiers(PCIDevice *dev);
> +
> +extern const VMStateDescription vmstate_msix;
> +
> +#define VMSTATE_MSIX(_field, _state) {                               \
> +    .name       = (stringify(_field)),                               \
> +    .size       = sizeof(PCIDevice),                                 \
> +    .vmsd       = &vmstate_msix,                                     \
> +    .flags      = VMS_STRUCT,                                        \
> +    .offset     = vmstate_offset_value(_state, _field, PCIDevice),   \
> +}
> +
>  #endif
> -- 
> 1.7.9.7
>