[PATCH v3] bus/pci: fix legacy device IO port map in secondary process

[Gupta, Nipun]

Hi Wenwu

On 8/22/2023 7:48 AM, Wenwu Ma wrote:
> When doing IO port mapping for legacy device
> in secondary process, the region information
> is missing, so, we need to refill it.

Please use 72 columns in the commit log

> 
> Fixes: 4b741542ecde ("bus/pci: avoid depending on private kernel value")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Wenwu Ma <wenwux.ma at intel.com>
> ---
> v3:
>   - adjusting variable settings
> v2:
>   - add release of device in pci_vfio_ioport_unmap
> 
> ---
>   drivers/bus/pci/linux/pci_vfio.c | 43 ++++++++++++++++++++++++++++++--
>   1 file changed, 41 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
> index e634de8322..5ef26c98d1 100644
> --- a/drivers/bus/pci/linux/pci_vfio.c
> +++ b/drivers/bus/pci/linux/pci_vfio.c
> @@ -1314,6 +1314,27 @@ pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
>   		return -1;
>   	}
>   
> +	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {

One thing I am not fully convinced is that why VFIO setup is not 
required for primary process here?

Thanks,
Nipun