Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support

[David Woodhouse]

On Wed, 2017-09-27 at 17:00 -0500, Bjorn Helgaas wrote:
> 
> 
> IIUC, this question is basically "why doesn't the PCI core enable IOV
> automatically when it sees an IOV-capable device?"
> 
> I think one reason is that an admin might want to control the number
> of VFs we enable (e.g., via 1789382a72a5 ("PCI: SRIOV control and
> status via sysfs" [1]). But I guess you already know about that,
> since this patch uses that sysfs path, so maybe I don't understand
> your question.


I mean, why doesn't the PCI core *allow* SR-IOV to be enabled via
sysfs, unless the driver does this?

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