[Ubuntu 16.04] NVLINK support for Garrison

[bugproxy]

This is a feature request to support NVLink for POWER8 processor and NVIDIA.

We're still in early hardware bring up at this stage, but thankfully the kernel patches are reasonably small. At this stage I'm hoping to get the first version of the patches posted to the mailing lists in the next couple of days meaning that they will hopefully get into 4.5.

Bug mirrored for Canonical awareness. A backport from 4.5 will be required once the patch is accepted.

[Ubuntu Foundations Team Bug Bot (crichton)]

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[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-01-11 07:50 EDT-------
The required patches were already accepted in Michael Ellerman's next Powerpc tree.

https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=5d2aa710e697244f5504125e4aa6e2cfcf6c4791

[Tim Gardner (timg-tpi)]

Given this commit is in linux-next, I presume it will also be included in the 4.5 merge ?

[Breno Leitão (breno-leitao)]

On Mon, Jan 11, 2016 at 12:37 PM, Tim Gardner <email address hidden> wrote:
> Given this commit is in linux-next, I presume it will also be included
> in the 4.5 merge ?
Yes. We are expecting to have this commit into 4.5 kernel.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-01-11 18:21 EDT-------
There are a couple of bug fixes which have just been posted to:

http://patchwork.ozlabs.org/patch/564543/
http://patchwork.ozlabs.org/patch/565653/
http://patchwork.ozlabs.org/patch/565654/

I expect these will be merged into Michael Ellerman's Powerpc tree soon.

[Tim Gardner (timg-tpi)]

powerpc/powernv: Reserve PE#0 on NPU
powerpc/powernv: Change NPU PE# assignment
powerpc/powernv: Fix update of NVLink DMA mask
powerpc/powernv: Add support for Nvlink NPUs

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-2.16

---------------
linux (4.4.0-2.16) xenial; urgency=low

  [ Andy Whitcroft ]

  * Release Tracking Bug
    - LP: #1539090
  * SAUCE: hv: hv_set_ifconfig -- convert to python3
    - LP: #1506521
  * SAUCE: dm: introduce a target_ioctl op to allow target specific ioctls
    - LP: #1538618

  [ Colin Ian King ]

  * SAUCE: ACPI / tables: Add acpi_force_32bit_fadt_addr option to force 32
    bit FADT addresses (LP: #1529381)
    - LP: #1529381

  [ John Johansen ]

  * SAUCE: (no-up): apparmor: fix for failed mediation of socket that is
    being shutdown
    - LP: #1446906

  [ Mahesh Salgaonkar ]

  * SAUCE: Powernv: Remove the usage of PACAR1 from opal wrappers
    - LP: #1537881
  * SAUCE: powerpc/book3s: Fix TB corruption in guest exit path on HMI
    interrupt.
    - LP: #1537881
  * SAUCE: KVM: PPC: Book3S HV: Fix soft lockups in KVM on HMI for time
    base errors
    - LP: #1537881

  [ Paolo Pisati ]

  * SAUCE: arm64: errata: Add -mpc-relative-literal-loads to erratum
    #843419 build flags
    - LP: #1533009
  * [Config] MFD_TPS65217=y && REGULATOR_TPS65217=y
  * [Config] disable ARCH_ZX (ZTE ZX Soc)

  [ Tim Gardner ]

  * Revert "SAUCE: (noup) cxlflash: a couple off by one bugs"
  * SAUCE: (no-up) Update bnx2x firmware to 7.12.30.0
    - LP: #1536719
  * SAUCE: drop obsolete bnx2x firmware
  * SAUCE: i40e: Silence 'may be used uninitialized' warnings
    - LP: #1536474
  * [Config] CONFIG_ZONE_DMA=y for amd64 lowlatency
    - LP: #1534647
  * [Config] Add pvpanic to virtual flavour
    - LP: #1537923
  * [Config] CONFIG_INTEL_PUNIT_IPC=m, CONFIG_INTEL_TELEMETRY=m
    - LP: #1520457

  [ Upstream Kernel Changes ]

  * i40evf: fix compiler warning of unused variable
    - LP: #1536474
  * intel: i40e: fix confused code
    - LP: #1536474
  * i40e/i40evf: remove unused tunnel parameter
    - LP: #1536474
  * i40e: Change BUG_ON to WARN_ON in service event complete
    - LP: #1536474
  * i40e: remove BUG_ON from feature string building
    - LP: #1536474
  * i40e: remove BUG_ON from FCoE setup
    - LP: #1536474
  * i40e: Workaround fix for mss < 256 issue
    - LP: #1536474
  * i40e/i40evf: Add a stat to track how many times we have to do a force
    WB
    - LP: #1536474
  * i40e: Move the saving of old link info from handle_link_event to
    link_event
    - LP: #1536474
  * i40e/i40evf: Add comment to #endif
    - LP: #1536474
  * i40e/i40evf: clean up error messages
    - LP: #1536474
  * i40evf: handle many MAC filters correctly
    - LP: #1536474
  * i40e: return the number of enabled queues for ETHTOOL_GRXRINGS
    - LP: #1536474
  * i40e: rework the functions to configure RSS with similar parameters
    - LP: #1536474
  * i40e: create a generic configure rss function
    - LP: #1536474
  * i40e: Bump version to 1.4.2
    - LP: #1536474
  * i40e: add new fields to store user configuration
    - LP: #1536474
  * i40e: rename rss_size to alloc_rss_size in i40e_pf
    - LP: #1536474
  * i40e/i40evf: Fix RS bit update in Tx path and disable force WB
    workaround
    - LP: #1536474
  * i40e/i40evf: prefetch skb data on transmit
    - LP: #1536474
  * i40evf: rename VF adapter s...