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Message-ID: <1520930719.11412.2.camel@infradead.org>
Subject: Re: [pci PATCH v5 3/4] ena: Migrate over to unmanaged SR-IOV
 support
From:   David Woodhouse <dwmw2@infradead.org>
To:     Christoph Hellwig <hch@lst.de>
Cc:     Alexander Duyck <alexander.duyck@gmail.com>, bhelgaas@google.com,
        alexander.h.duyck@intel.com, linux-pci@vger.kernel.org,
        virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org,
        netdev@vger.kernel.org, dan.daly@intel.com,
        linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
        keith.busch@intel.com, netanel@amazon.com, mheyne@amazon.de,
        liang-min.wang@intel.com, mark.d.rustad@intel.com
In-Reply-To: <20180313081628.GA618@lst.de>
References: <20180312171813.3487.94803.stgit@localhost.localdomain>
         <20180312172309.3487.76690.stgit@localhost.localdomain>
         <1520928772.28745.53.camel@infradead.org> <20180313081628.GA618@lst.de>
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Date:   Tue, 13 Mar 2018 08:45:19 +0000
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Sender: linux-kernel-owner@vger.kernel.org
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On Tue, 2018-03-13 at 09:16 +0100, Christoph Hellwig wrote:
> On Tue, Mar 13, 2018 at 08:12:52AM +0000, David Woodhouse wrote:
> >=20
> > I'd also *really* like to see a way to enable this for PFs which don't
> > have (and don't need) a driver. We seem to have lost that along the
> > way.
> We've been forth and back on that.=C2=A0=C2=A0I agree that not having any=
 driver
> just seems dangerous.=C2=A0=C2=A0If your PF really does nothing we should=
 just
> have a trivial pf_stub driver that does nothing but wiring up
> pci_sriov_configure_simple.=C2=A0=C2=A0We can then add PCI IDs to it eith=
er
> statically, or using the dynamic ids mechanism.

Or just add it to the existing pci-stub. What's the point in having a
new driver?=C2=A0
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