Re: [dpdk-dev] [PATCH] bus/pci: optimize pci device probe

[Maxime Coquelin <maxime.coquelin@redhat.com>]

Hi,

On 5/5/20 6:16 PM, David Marchand wrote:
> On Tue, May 5, 2020 at 5:50 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>>>>
>>>> Removing this special case could break x86 applications running with
>>>> legacy virtio.
>>>>
>>>>
>>>> On the plus side, we have been announcing for some time in virtio:
>>>> RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
>>>
>>> What is to conclude?
>>> # The In-tree virtio driver uses ""* igb_uio | uio_pci_generic |
>>> vfio-pci"" driver as backend and it does not need RTE_KDRV_NONE?
>>> OR
>>> # The in-tree, legacy virtio(const struct virtio_pci_ops legacy_op)
>>> can work without any kernel driver in the backend. So RTE_KDRV_NONE
>>> need?
>>
>> Ping. What is the conclusion? If it is former then this patch is valid.
> 
> I am fine with dropping the legacy part, but I wanted to hear from
> Maxime at least.
> 
> 

IIUC, it means that with Jerin patch, Virtio Legacy devices support will
be dropped as they won't be probed anymore?

Maxime