From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: [pci PATCH v5 3/4] ena: Migrate over to unmanaged SR-IOV support Date: Tue, 13 Mar 2018 09:14:16 +0000 Message-ID: <1520932456.11412.6.camel@infradead.org> References: <20180312171813.3487.94803.stgit@localhost.localdomain> <20180312172309.3487.76690.stgit@localhost.localdomain> <1520928772.28745.53.camel@infradead.org> <20180313081628.GA618@lst.de> <1520930719.11412.2.camel@infradead.org> <20180313085442.GA1537@lst.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-TrcukW5z+tXbyMIAZJQG" Cc: Alexander Duyck , 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 To: Christoph Hellwig Return-path: In-Reply-To: <20180313085442.GA1537@lst.de> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org --=-TrcukW5z+tXbyMIAZJQG Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2018-03-13 at 09:54 +0100, Christoph Hellwig wrote: > On Tue, Mar 13, 2018 at 08:45:19AM +0000, David Woodhouse wrote: > Because binding to pci-stub means that you'd now enable the simple > SR-IOV for any device bound to PCI stub.=C2=A0=C2=A0Which often might be = the wrong > thing. No, *using* it would be the wrong thing (bad root; no biscuit). Except when the PF doesn't have SR-IOV capability anyway, in which case who cares. Or when the PF does have SR-IOV capability and root has ensure that she's doing the right thing. I understand the arguments about disallowing root from doing bad things. Not that I agree with them. But simply changing to a *different* driver seems pointless. --=-TrcukW5z+tXbyMIAZJQG Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEFQw ggUxMIIEGaADAgECAhBNRhEyk/HZ7naOeTHWrzuAMA0GCSqGSIb3DQEBCwUAMIGXMQswCQYDVQQG EwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYD VQQKExFDT01PRE8gQ0EgTGltaXRlZDE9MDsGA1UEAxM0Q09NT0RPIFJTQSBDbGllbnQgQXV0aGVu dGljYXRpb24gYW5kIFNlY3VyZSBFbWFpbCBDQTAeFw0xNzEyMjEwMDAwMDBaFw0xODEyMjEyMzU5 NTlaMCQxIjAgBgkqhkiG9w0BCQEWE2R3bXcyQGluZnJhZGVhZC5vcmcwggEiMA0GCSqGSIb3DQEB AQUAA4IBDwAwggEKAoIBAQDgzLNWa18DNpGUj/ZeH0Sgz53ESIbzdPw3OJeuNP6jZhxZojbyfxbM hETscxI/Hj6UZ4a7sHm5BkVjlsB1Af2Za/PXUt8MmLAcPMHkMPGunvkUibEvblDvpqMkQZlaZM+t 5PqFmWkbehLaEvbpNY7dmEAAeKh4klTzJzrr5AAzaCQ32cA2e3+DEIv5O5l9ViMIjy/JM+xMQrfX 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