mlx5dv_vfio_get_events_fd(3)

💖 NAME 💖

Okay bestie, this is the mlx5dv_vfio_get_events_fd(3) page, and it is lowkey about one thing: mlx5dv_vfio_get_events_fd — Get the file descriptor to manage driver events. That’s the name-section moment, periodt. 💅

🦋 SYNOPSIS 🦋

#include <infiniband/mlx5dv.h>

int mlx5dv_vfio_get_events_fd(struct ibv_context *ctx);

🌸 DESCRIPTION 🌸

It returns the file descriptor to be used for managing driver events. That’s it, that’s the function — file descriptor for driver-event management, served fresh. ✨

🎀 ARGUMENTS 🎀

• ctx — the device context that was opened for VFIO by calling mlx5dv_get_vfio_device_list(). Like, that exact ctx, bestie — no random context energy. 🫶

✨ RETURN VALUE ✨

It returns the internal matching file descriptor. No cap: that’s the whole return-value tea. 🎀

💀 NOTES 💀

Client code should poll the returned file descriptor, and once there is some data to be managed, immediately call mlx5dv_vfio_process_events(). Do not let it sit there, okay? 😭

🔥 SEE ALSO 🔥

• ibv_open_device(3)
• ibv_free_device_list(3)
• mlx5dv_get_vfio_device_list(3)

👑 AUTHOR 👑

Yishai Hadas <yishaih@nvidia.com> — iconic. 👑

---

Sign-off time: this is the mlx5dv_vfio_get_events_fd(3) manual page, and the original footer was just mlx5dv_vfio_get_events_fd(3) again — no separate source/version/date line to quote, so I’m not inventing any metadata. Just accurate facts and correct vibes, fr fr. 💜