POWER9: Improve performance on memory management

[bugproxy]

Please include this two patches for POWER9. They are performance patches and can improve up to 10x some workloads. These patches are limited to arch/powerpc only:

https://patchwork.ozlabs.org/patch/746016/
https://patchwork.ozlabs.org/patch/746020/

[Breno Leitão (breno-leitao)]

Send to the mailing list:

https://lists.ubuntu.com/archives/kernel-team/2017-April/083554.html

[Michael Hohnbaum (hohnbaum)]

Leann,

Please add to the Kernel Team's queue.

                 Michael

On 04/10/2017 05:59 AM, Launchpad Bug Tracker wrote:
> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>
> Please include this two patches for POWER9. They are performance patches
> and can improve up to 10x some workloads. These patches are limited to
> arch/powerpc only:
>
> https://patchwork.ozlabs.org/patch/746016/
> https://patchwork.ozlabs.org/patch/746020/
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Taco Screen team (taco-screen-team)
> Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-153287 severity-high targetmilestone-inin1704

--
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.

[Kleber Sacilotto de Souza (kleber-souza)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-zesty' to 'verification-done-zesty'. If the problem still exists, change the tag 'verification-needed-zesty' to 'verification-failed-zesty'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.10.0-21.23

---------------
linux (4.10.0-21.23) zesty; urgency=low

  * linux: 4.10.0-21.23 -proposed tracker (LP: #1686414)

  * Need to stop using bzip2 compression in packages for zesty onward
    (LP: #1686782)
    - [Debian] Use default compression for all packages

  * [Hyper-V][SAUCE] pci-hyperv: Use only 16 bit integer for PCI domain
    (LP: #1684971)
    - SAUCE: pci-hyperv: Use only 16 bit integer for PCI domain

  * CVE-2017-7477: macsec: avoid heap overflow in skb_to_sgvec (LP: #1685892)
    - macsec: avoid heap overflow in skb_to_sgvec
    - macsec: dynamically allocate space for sglist

  * Zesty update to 4.10.11 stable release (LP: #1685140)
    - drm/i915: Fix forcewake active domain tracking
    - drm/i915: Move updating color management to before vblank evasion
    - drm/i915/fbdev: Stop repeating tile configuration on stagnation
    - drm/i915: Squelch any ktime/jiffie rounding errors for wait-ioctl
    - drm/i915/gen9: Increase PCODE request timeout to 50ms
    - drm/i915: Store a permanent error in obj->mm.pages
    - drm/i915: Nuke debug messages from the pipe update critical section
    - drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3
    - drm/i915: Reject HDMI 12bpc if the sink doesn't indicate support
    - drm/i915: Only enable hotplug interrupts if the display interrupts are
      enabled
    - drm/i915: Drop support for I915_EXEC_CONSTANTS_* execbuf parameters.
    - drm/i915: Stop using RP_DOWN_EI on Baytrail
    - drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker)
    - drm/i915: Do .init_clock_gating() earlier to avoid it clobbering watermarks
    - orangefs: Dan Carpenter influenced cleanups...
    - orangefs: fix buffer size mis-match between kernel space and user space.
    - nfs: flexfiles: fix kernel OOPS if MDS returns unsupported DS type
    - rt2x00usb: fix anchor initialization
    - rt2x00usb: do not anchor rx and tx urb's
    - MIPS: Introduce irq_stack
    - MIPS: Stack unwinding while on IRQ stack
    - MIPS: Only change $28 to thread_info if coming from user mode
    - MIPS: Switch to the irq_stack in interrupts
    - MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK
    - MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
    - crypto: caam - fix RNG deinstantiation error checking
    - crypto: caam - fix invalid dereference in caam_rsa_init_tfm()
    - dma-buf: add support for compat ioctl
    - Linux 4.10.11

  * Zesty update to v4.10.10 stable release (LP: #1682130)
    - drm/vmwgfx: Type-check lookups of fence objects
    - drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()
    - drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()
    - drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces
    - drm/vmwgfx: Remove getparam error message
    - drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
    - PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host
      controller
    - PCI: thunder-pem: Fix legacy firmware PEM-specific resources
    - sysfs: be careful of error returns from ops->show()
    - staging: android: ashmem: lseek failed due to no FM...