Re: [dpdk-dev] [PATCH v11 2/2] librte_pmd_null: Support port hotplug function

[Tetsuya Mukawa <mukawa@igel.co.jp>]

2015-02-26 16:03 GMT+09:00 Thomas Monjalon <thomas.monjalon@6wind.com>:
> 2015-02-25 16:49, Stephen Hemminger:
>> Build fails if HOTPLUG is disabled

Hi Stephen,

I appreciate for you reporting.

>
> OK thanks for reporting.
> Actually there is no good reason to disable hotplug on Linux.
> Though it means that it's impossible to build on FreeBSD.
>
> Tetsuya, the right fix is to remove this option.

Hi Thomas,

Yes, I agree with it. I will add some codes to remove the option.
Please let me have a few days, I need to prepare BSD machine for compile test.

> You should manage to graceful degrades hotplug in not supported
> cases supported: devices cannot be detachable in case of VFIO or nic_uio.
> What about uio_pci_generic?

We cannot detach a vfio device so far. But we can detach a igb_uio and
uio_pci_generic device.
About a vfio ddevice, I haven't checked related code yet, but I guess
I will submit code to detach a vfio device in post-rc1.

Thanks,
Tetsuya