[openib-general] Re: device add/remove in userspace

[Roland Dreier]

    Sean> Is there a way for a userspace application to know if a
    Sean> device has been added or removed?

    Sean> I'm porting the CMA to userspace.  One of the features of
    Sean> the kernel CMA is that listen requests can span all devices,
    Sean> with device add/remove handled automatically.  I'd like to
    Sean> expose similar functionality in userspace, but it appears
    Sean> that the device list is built once when ibv_get_devices() is
    Sean> called.

We don't really handle this right now.  It could probably be made to
work on top of hotplug/udev/hal/something but it seems tricky to me.

 - R.