[lkml]   [2018]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [pci PATCH v4 1/4] pci-iov: Add support for unmanaged SR-IOV
On Thu, 08 Mar 2018 11:02:29 -0800
Alexander Duyck <> wrote:

> From: Alexander Duyck <>
> This patch is meant to add some basic functionality to support for SR-IOV
> on devices when the VFs are not managed by some other entity in the device
> other than the kernel.
> A new sysfs value called sriov_unmanaged_autoprobe has been added. This
> value is used as the drivers_autoprobe setting of the VFs when they are
> being managed by an external entity such as device firmware instead of
> being managed by the kernel.
> One side effect of this change is that the sriov_drivers_autoprobe and
> sriov_unmanaged_autoprobe will only apply their updates when SR-IOV VFs
> are allocated. Attempts to update them when SR-IOV is in use will only
> update the local value and will not update sriov->autoprobe.
> Signed-off-by: Alexander Duyck <>
> ---

I still struggle to understand why we need this "unmanaged"
complication and how a user of the sysfs API is expected to have any
idea whether a PF is managed or unmanaged and why they should care.
Can't we just have a pci_simple_sriov_configure() helper and ignore
this unmanaged business? Thanks,


 \ /
  Last update: 2018-03-12 04:59    [W:0.094 / U:2.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site