Question about why doing VFIO RESET after device open

[Chenbo Xia]

Hi,

I am not sure why we are calling ioctl(vfio_dev_fd, VFIO_DEVICE_RESET) in pci_rte_vfio_setup_device()
, which is after opening the VFIO device fd. As I see in linux kernel, opening the vfio device fd will
trigger the device reset and put device into clean state. Another VFIO_DEVICE_RESET seems not needed?

Could anyone help confirm or correct me?

There was also a related question in community two years ago:
https://mails.dpdk.org/archives/dev/2022-September/251640.html


Thanks,
Chenbo