[OpenPower-Firmware] Infiniband network booting

Klaus Heinrich Kiwi klaus at linux.vnet.ibm.com
Thu May 14 10:29:37 AEST 2020

On 4/16/2020 1:02 PM, Daniel M. Weeks wrote:
> In November 2019, I modified OpenPower firmware to support network
> booting IBM Power 9 systems over Infiniband. In the coming days, I will
> be submitting for review three series of patches for petitboot, a series
> of patches for busybox, and a series of patches for op-build that add
> the features to make this possible. While I believe these changes to be
Any traction with the busybox udhcp patches?

have you tried with ISC dhcp instead? I honestly don't know how much 
that adds to our BOOTKERNEL size, but that may be an option if the udhcp 
path is unfeasible.

> complete for the purposes of basic use, there are some things that
> remain unsupported, most notably PKEYs/subnets, which would require more
> extensive changes.
> There is a caveat: The petitboot and op-build patches are for older
> branches since the hardware I have available is using petitboot 1.7.5
> and op-build 2.0.14.
> First, this requires backporting a large number of kernel changes to fix
> netlink support in IPoIB. This may not affect later versions of the
> firmware depending on their kernel version. I can supply this series for
> review/use where there is interest.

As mentioned, we absolutely require these patches to be applicable and 
tested on upstream master.

> Second, although I would like to, I have no good to way to test forward
> porting these changes to recent branches until the there is a recent
> firmware build supporting the hardware I have available.



Klaus Heinrich Kiwi <klaus at linux.vnet.ibm.com>

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