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[Launchpad Bug Tracker <1592481@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-30.49

---------------
linux (4.4.0-30.49) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1597897

  * FCP devices are not detected correctly nor deterministically (LP: #1567602)
    - scsi_dh_alua: Disable ALUA handling for non-disk devices
    - scsi_dh_alua: Use vpd_pg83 information
    - scsi_dh_alua: improved logging
    - scsi_dh_alua: sanitze sense code handling
    - scsi_dh_alua: use standard logging functions
    - scsi_dh_alua: return standard SCSI return codes in submit_rtpg
    - scsi_dh_alua: fixup description of stpg_endio()
    - scsi_dh_alua: use flag for RTPG extended header
    - scsi_dh_alua: use unaligned access macros
    - scsi_dh_alua: rework alua_check_tpgs() to return the tpgs mode
    - scsi_dh_alua: simplify sense code handling
    - scsi: Add scsi_vpd_lun_id()
    - scsi: Add scsi_vpd_tpg_id()
    - scsi_dh_alua: use scsi_vpd_tpg_id()
    - scsi_dh_alua: Remove stale variables
    - scsi_dh_alua: Pass buffer as function argument
    - scsi_dh_alua: separate out alua_stpg()
    - scsi_dh_alua: Make stpg synchronous
    - scsi_dh_alua: call alua_rtpg() if stpg fails
    - scsi_dh_alua: switch to scsi_execute_req_flags()
    - scsi_dh_alua: allocate RTPG buffer separately
    - scsi_dh_alua: Use separate alua_port_group structure
    - scsi_dh_alua: use unique device id
    - scsi_dh_alua: simplify alua_initialize()
    - revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach should
      succeed while TPG is transitioning")
    - scsi_dh_alua: move optimize_stpg evaluation
    - scsi_dh_alua: remove 'rel_port' from alua_dh_data structure
    - scsi_dh_alua: Use workqueue for RTPG
    - scsi_dh_alua: Allow workqueue to run synchronously
    - scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA'
    - scsi_dh_alua: Recheck state on unit attention
    - scsi_dh_alua: update all port states
    - scsi_dh_alua: Send TEST UNIT READY to poll for transitioning
    - scsi_dh_alua: do not fail for unknown VPD identification

linux (4.4.0-29.48) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1597015

  * Wireless hotkey fails on Dell XPS 15 9550 (LP: #1589886)
    - intel-hid: new hid event driver for hotkeys
    - intel-hid: fix incorrect entries in intel_hid_keymap
    - intel-hid: allocate correct amount of memory for private struct
    - intel-hid: add a workaround to ignore an event after waking up from S4.
    - [Config] CONFIG_INTEL_HID_EVENT=m

  * cgroupfs mounts can hang (LP: #1588056)
    - Revert "UBUNTU: SAUCE: (namespace) mqueue: Super blocks must be owned by the
      user ns which owns the ipc ns"
    - Revert "UBUNTU: SAUCE: kernfs: Do not match superblock in another user
      namespace when mounting"
    - Revert "UBUNTU: SAUCE: cgroup: Use a new super block when mounting in a
      cgroup namespace"
    - (namespace) bpf: Use mount_nodev not mount_ns to mount the bpf filesystem
    - (namespace) bpf, inode: disallow userns mounts
    - (namespace) ipc: Initialize ipc_namespace->user_ns early.
    - (namespace) vfs: Pass data, ns, and ns->userns to mount_ns
    - SAUCE: (namespace) Sync with upstream s_user_ns patches
    - (namespace) kernfs: The cgroup filesystem also benefits from SB_I_NOEXEC
    - (namespace) ipc/mqueue: The mqueue filesystem should never contain
      executables

  * KVM system crashes after starting guest (LP: #1596635)
    - xhci: Cleanup only when releasing primary hcd

  * Upstream patch "crypto: vmx - IV size failing on skcipher API" for Ubuntu
    16.04 (LP: #1596557)
    - crypto: vmx - IV size failing on skcipher API

  * [Bug]tpm initialization fails on x86 (LP: #1596469)
    - tpm_crb: drop struct resource res from struct crb_priv
    - tpm_crb: fix mapping of the buffers

  * Device shutdown notification for CAPI Flash cards (LP: #1592114)
    - cxlflash: Fix regression issue with re-ordering patch
    - cxlflash: Fix to drain operations from previous reset
    - cxlflash: Add device dependent flags
    - cxlflash: Shutdown notify support for CXL Flash cards

  * scsi-modules udeb should include pm80xx (LP: #1595628)
    - [Config] Add pm80xx scsi driver to d-i

  * Sync up latest relevant upstream bug fixes (LP: #1594871)
    - SAUCE: (noup) Update zfs to 0.6.5.6-0ubuntu10

  * Cannot compile module tda10071 (LP: #1592531)
    - [media] tda10071: Fix dependency to REGMAP_I2C

  * lsvpd doesn't show correct location code for devices attached to a CAPI card
    (LP: #1594847)
    - cxl: Make vPHB device node match adapter's

  * enable CRC32 and AES ARM64 by default or as module (LP: #1594455)
    - [Config] Enable arm64 AES and CRC32 crypto

  * VMX kernel crypto module exhibits poor performance in Ubuntu 16.04
    (LP: #1592481)
    - crypto: vmx - comply with ABIs that specify vrsave as reserved.
    - crypto: vmx - Fix ABI detection
    - crypto: vmx - Increase priority of aes-cbc cipher

  * build squashfs into xenial kernels by default (LP: #1593134)
    - [Config] CONFIG_SQUASHFS=y

  * Restore irqfd fast path for PPC (LP: #1592809)
    - KVM: PPC: Book3S HV: Re-enable XICS fast path for irqfd-generated interrupts

  * Unable to start guests with memballoon default. (LP: #1592042)
    - virtio_balloon: fix PFN format for virtio-1

  * Key 5 automatically pressed on some Logitech wireless keyboards
    (LP: #1579190)
    - HID: core: prevent out-of-bound readings

  * ZFS: Running ztest repeatedly for long periods of time eventually results in
    "zdb: can't open 'ztest': No such file or directory" (LP: #1587686)
    - Fix ztest truncated cache file

  * STC840.20:Alpine:alp7fp1:Ubuntu 16.04, BlueFin (SAN) EEH 6 times during boot
    then disabled SRC BA188002:b0314a_1612.840 (LP: #1587316)
    - lpfc: Fix DMA faults observed upon plugging loopback connector

 -- Kamal Mostafa <kamal@xxxxxxxxxxxxx>  Thu, 30 Jun 2016 12:52:15 -0700

** Changed in: linux (Ubuntu Yakkety)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1592481

Title:
  VMX kernel crypto module exhibits poor performance in Ubuntu 16.04

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Yakkety:
  Fix Released

Bug description:
  ---Problem Description---
  Pre-sales customer with loaner P8 observes slow performance of VMX-accelerated kernel crypto, multiple times slower then Haswell.
   
  ---uname output---
  Linux crimini9 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:30:22 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = unknown 
   
  ---Steps to Reproduce---
   Run cryptsetup benchmark with the VMX crypto module modprobed.
   
  Original customer cryptsetup benchmark results on Ubuntu 16.04:
   
  Intel i5 core 2500k overclocked at 4.5 GHz w/ 4 cores:
  aes-xts   256b  1884,2 MiB/s  1952,0 MiB/s
  aes-cbc  256b   509,1 MiB/s  1724,2 MiB/s
   
  Results for xeon e5-2680 at 2.80 Ghz:
   aes-cbc   256b   392.6 MiB/s  2062.0 MiB/s
   aes-xts   256b  3853.0 MiB/s  4793.0 MiB/s
   
  Results from intel i7 3770 at 3.40 GHz:
  aes-xts?? 256b??7787.0 MiB/s??7962.0 MiB/s
  aes-cbc?? 256b?? 662.0 MiB/s??3779.0 MiB/s
   
  Power 8 at 4.15Ghz and vmx-crypto loaded (s822L, 16c, powervm)
  aes-xts   256b   410.7 MiB/s   413.9 MiB/s
  aes-cbc   256b   300.6 MiB/s   358.7 MiB/s

  Mirroring to Canonical for their awareness as IBM purses a fix for
  inclusion in a 16.04 SRU.

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