netdev - RE: [PATCH] PCI: allow drivers to limit the number of VFs to 0

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Message-ID: <02874ECE860811409154E81DA85FBB5882E539EA@ORSMSX115.amr.corp.intel.com>
Date:   Fri, 25 May 2018 17:46:47 +0000
From:   "Keller, Jacob E" <jacob.e.keller@...el.com>
To:     Bjorn Helgaas <helgaas@...nel.org>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Sathya Perla <sathya.perla@...adcom.com>,
        "Felix Manlunas" <felix.manlunas@...iumnetworks.com>,
        "alexander.duyck@...il.com" <alexander.duyck@...il.com>,
        "john.fastabend@...il.com" <john.fastabend@...il.com>,
        Donald Dutile <ddutile@...hat.com>,
        "oss-drivers@...ronome.com" <oss-drivers@...ronome.com>,
        Christoph Hellwig <hch@...radead.org>,
        Derek Chickles <derek.chickles@...iumnetworks.com>,
        Satanand Burla <satananda.burla@...iumnetworks.com>,
        Raghu Vatsavayi <raghu.vatsavayi@...iumnetworks.com>,
        Ajit Khaparde <ajit.khaparde@...adcom.com>,
        Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>,
        Somnath Kotur <somnath.kotur@...adcom.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: RE: [PATCH] PCI: allow drivers to limit the number of VFs to 0

> -----Original Message-----
> From: Bjorn Helgaas [mailto:helgaas@...nel.org]
> Sent: Friday, May 25, 2018 10:01 AM
> To: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>; linux-pci@...r.kernel.org;
> netdev@...r.kernel.org; Sathya Perla <sathya.perla@...adcom.com>; Felix
> Manlunas <felix.manlunas@...iumnetworks.com>;
> alexander.duyck@...il.com; john.fastabend@...il.com; Keller, Jacob E
> <jacob.e.keller@...el.com>; Donald Dutile <ddutile@...hat.com>; oss-
> drivers@...ronome.com; Christoph Hellwig <hch@...radead.org>; Derek
> Chickles <derek.chickles@...iumnetworks.com>; Satanand Burla
> <satananda.burla@...iumnetworks.com>; Raghu Vatsavayi
> <raghu.vatsavayi@...iumnetworks.com>; Ajit Khaparde
> <ajit.khaparde@...adcom.com>; Sriharsha Basavapatna
> <sriharsha.basavapatna@...adcom.com>; Somnath Kotur
> <somnath.kotur@...adcom.com>; Kirsher, Jeffrey T
> <jeffrey.t.kirsher@...el.com>; intel-wired-lan@...ts.osuosl.org
> Subject: Re: [PATCH] PCI: allow drivers to limit the number of VFs to 0
> 
> [+cc liquidio, benet, fm10k maintainers:
> 
>   The patch below will affect you if your driver calls
>     pci_sriov_set_totalvfs(dev, 0);
> 
>   Previously that caused a subsequent pci_sriov_get_totalvfs() to return
>   the totalVFs value from the SR-IOV capability.  After this patch, it will
>   return 0, which has implications for VF enablement via the sysfs
>   "sriov_numvfs" file.]
> 

Thanks. I don't foresee any issues with fm10k regarding this..

Thanks,
Jake