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

From David Woodhouse <dwmw2@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support
Date 2017-09-28 00:30 +0200
Message-ID <uut05-xH-1@gated-at.bofh.it> (permalink)
References <uukpP-3b4-7@gated-at.bofh.it> <uusGJ-pz-9@gated-at.bofh.it>
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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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Thread

[PATCH] uio/uio_pci_generic: Add SR-IOV support David Woodhouse <dwmw2@infradead.org> - 2017-09-27 15:20 +0200
  Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Bjorn Helgaas <helgaas@kernel.org> - 2017-09-28 00:10 +0200
    Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support David Woodhouse <dwmw2@infradead.org> - 2017-09-28 00:30 +0200
      Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Alexander Duyck <alexander.duyck@gmail.com> - 2017-09-28 01:10 +0200
        Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Don Dutile <ddutile@redhat.com> - 2017-09-28 14:30 +0200
          Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support David Woodhouse <dwmw2@infradead.org> - 2017-09-28 15:50 +0200
            Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Don Dutile <ddutile@redhat.com> - 2017-09-28 17:10 +0200
              Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support David Woodhouse <dwmw2@infradead.org> - 2017-09-28 18:00 +0200
                Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Don Dutile <ddutile@redhat.com> - 2017-09-28 19:00 +0200
                Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support David Woodhouse <dwmw2@infradead.org> - 2017-10-02 14:40 +0200
                Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Don Dutile <ddutile@redhat.com> - 2017-10-02 22:50 +0200
    Re: [PATCH] uio/uio_pci_generic: Add SR-IOV support Don Dutile <ddutile@redhat.com> - 2017-09-28 14:20 +0200

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