[PATCH 0/5] vDPA/ifcvf: implement immediate initialization mechanism

Jason Wang
2023-04-03T05:28:13Z

On Fri, Mar 31, 2023 at 8:49?PM Zhu Lingshan <lingshan.zhu at intel.com>
wrote:
>
> Formerly, ifcvf driver has implemented a lazy-initialization mechanism
> for the virtqueues and other config space contents,
> it would store all configurations that passed down from the userspace,
> then load them to the device config space upon DRIVER_OK.
>
> This can not serve live migration, so this series implement an
> immediate initialization mechanism, which means rather than the
> former store-load process, the virtio operations like vq ops
> would take immediate actions by access the virtio registers.

Is there any chance that ifcvf can use virtio_pci_modern_dev library?

Then we don't need to duplicate the codes.

Note that pds_vdpa will be the second user for virtio_pci_modern_dev
library (and the first vDPA parent to use that library).

Thanks

>
> This series also implement irq synchronization in the reset
> routine
>
> Zhu Lingshan (5):
>   virt queue ops take immediate actions
>   get_driver_features from virito registers
>   retire ifcvf_start_datapath and ifcvf_add_status
>   synchronize irqs in the reset routine
>   a vendor driver should not set _CONFIG_S_FAILED
>
>  drivers/vdpa/ifcvf/ifcvf_base.c | 162 +++++++++++++++++++-------------
>  drivers/vdpa/ifcvf/ifcvf_base.h |  16 ++--
>  drivers/vdpa/ifcvf/ifcvf_main.c |  97 ++++---------------
>  3 files changed, 122 insertions(+), 153 deletions(-)
>
> --
> 2.39.1
>