s390/kconfig: CONFIG_NUMA without CONFIG_NUMA_EMU does not make any sense on s390x

[bugproxy]

== Comment: #0 - Hendrik Brueckner - 2016-03-15 06:33:03 ==
For NUMA, ensure the setting of these kernel configuration for s390x:

# CONFIG_NUMA_BALANCING_DEFAULT_ENABLED is not set
CONFIG_NUMA_EMU=y
CONFIG_EMU_SIZE=0x10000000

CONFIG_NUMA without CONFIG_NUMA_EMU does not make any sense. s390 does not provide hardware topology information. However, we do support fake NUMA to improve performance issues seen with very large memory configurations. Therefore, CONFIG_NUMA_EMU has to be enabled.

Given that we only support fake NUMA CONFIG_NUMA_BALANCING_DEFAULT_ENABLED should be disabled, since it moves pages without any benefit but costs additional cpu cycles.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-15.31

---------------
linux (4.4.0-15.31) xenial; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1559252

  * Xilinx KU3 Capi card does not show up in Ubuntu 16.04 (LP: #1557001)
    - SAUCE: (noup) cxl: Allow initialization on timebase sync failures

  * policy namespace stacking (LP: #1379535)
    - Revert "UBUNTU: SAUCE: Move replacedby allocation into label_alloc"
    - Revert "UBUNTU: SAUCE: Fixup: __label_update() still doesn't handle some cases correctly."
    - Revert "UBUNTU: SAUCE: fix: audit "no_new_privs" case for exec failure"
    - Revert "UBUNTU: SAUCE: fixup: warning about aa_label_vec_find_or_create not being static"
    - Revert "UBUNTU: SAUCE: apparmor: fix refcount race when finding a child profile"
    - Revert "UBUNTU: SAUCE: fixup: cast poison values to remove warnings"
    - Revert "UBUNTU: SAUCE: fixup: get rid of unused var build warning"
    - Revert "UBUNTU: SAUCE: fixup: 20/23 locking issue around in __label_update"
    - Revert "UBUNTU: SAUCE: fixup: make __share_replacedby private to get rid of build warning"
    - Revert "UBUNTU: SAUCE: fix: replacedby forwarding is not being properly update when ns is destroyed"
    - Revert "UBUNTU: SAUCE: apparmor: fix log of apparmor audit message when kern_path() fails"
    - Revert "UBUNTU: SAUCE: fixup: cleanup return handling of labels"
    - Revert "UBUNTU: SAUCE: apparmor: fix: ref count leak when profile sha1 hash is read"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: query label file permission"
    - Revert "UBUNTU: SAUCE: apparmor: Don't remove label on rcu callback if the label has already been removed"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: break circular refcount for label that is directly freed."
    - Revert "UBUNTU: SAUCE: apparmor: Fix: refcount bug when inserting label update that transitions ns"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: now that insert can force replacement use it instead of remove_and_insert"
    - Revert "UBUNTU: SAUCE: apparmor Fix: refcount bug in pivotroot mediation"
    - Revert "UBUNTU: SAUCE: apparmor: ensure that repacedby sharing is done correctly"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: update replacedby allocation to take a gfp parameter"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: convert replacedby update to be protected by the labelset lock"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: add required locking of __aa_update_replacedby on merge path"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: deadlock in aa_put_label() call chain"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: label_vec_merge insertion"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: ensure new labels resulting from merge have a replacedby"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: refcount leak in aa_label_merge"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: refcount race between locating in labelset and get"
    - Revert "UBUNTU: SAUCE: apparmor: Fix: label merge handling of marking unconfined and stale"
    - Revert "UBUNTU: SAUCE: apparmor: add underscores to indicate aa_label_next_not_in_set() use needs locking"
    - Revert "UBUNTU: SAUCE: apparmor: debug: POISON label and replaceby ...

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-03-23 12:01 EDT-------
On kernel 4.4.0-15:
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED is still y, though requested "disabled"

root@s83lp41:~# cat /boot/config-4.4.0-15-generic | grep _NUMA
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
CONFIG_NUMA=y
CONFIG_NUMA_EMU=y

root@s83lp41:~# cat /boot/config-4.4.0-15-generic | grep _EMU_SIZE
CONFIG_EMU_SIZE=0x10000000

root@s83lp41:~# uname -a
Linux s83lp41 4.4.0-15-generic #31-Ubuntu SMP Fri Mar 18 19:07:12 UTC 2016 s390x s390x s390x GNU/Linux

[Tim Gardner (timg-tpi)]

Whoops, missed CONFIG_NUMA_BALANCING_DEFAULT_ENABLED. It will be set to 'n' for s390x in the next upload (linux 4.4.0-16.32)

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-16.32

---------------
linux (4.4.0-16.32) xenial; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1561727

  * fix thermal throttling due to commit "Thermal: initialize thermal zone
    device correctly" (LP: #1561676)
    - Thermal: Ignore invalid trip points

  * Thinkpad T460: Trackpoint mouse buttons instantly generate "release" event
    on press (LP: #1553811)
    - SAUCE: (noup) Input: synaptics - handle spurious release of trackstick
      buttons, again

  * reading /sys/kernel/security/apparmor/profiles requires CAP_MAC_ADMIN
    (LP: #1560583)
    - SAUCE: apparmor: Allow ns_root processes to open profiles file
    - SAUCE: apparmor: Consult sysctl when reading profiles in a user ns

  * linux: sync virtualbox drivers to 5.0.16-dfsg-2 (LP: #1561492)
    - ubuntu: vbox -- update to 5.0.16-dfsg-2

  * s390/kconfig: CONFIG_NUMA without CONFIG_NUMA_EMU does not make any sense on
    s390x (LP: #1557690)
    - [Config] CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=n for s390x

  * spl/zfs fails to build on s390x (LP: #1519814)
    - [Config] s390x -- re-enable zfs
    - [Config] zfs -- disable powerpc until the test failures can be resolved

  * linux: sync to ZFS 0.6.5.6 stable release (LP: #1561483)
    - SAUCE: (noup) Update spl to 0.6.5.6-0ubuntu1, zfs to 0.6.5.6-0ubuntu1

  * zfs: enable zfs for 64bit powerpc kernels (LP: #1558871)
    - [Packaging] zfs -- handle rprovides via dpkg-gencontrol
    - [Config] powerpc -- convert zfs configuration to custom_override

  * Memory arena corruption with FUSE (was Memory allocation failure crashes
    kernel hard, presumably related to FUSE) (LP: #1505948)
    - SAUCE: (noup) fuse: do not use iocb after it may have been freed
    - SAUCE: (noup) fuse: Add reference counting for fuse_io_priv

  * cgroup namespaces: add a 'nsroot=' mountinfo field (LP: #1560489)
    - SAUCE: (noup) cgroup namespaces: add a 'nsroot=' mountinfo field

  * linux packaging: clear remaining redundant delta (LP: #1560445)
    - [Debian] Remove generated intermediate files on clean

  * arm64: guest hangs when ntpd is running (LP: #1549494)
    - Revert "hrtimer: Add support for CLOCK_MONOTONIC_RAW"
    - Revert "hrtimer: Catch illegal clockids"
    - Revert "KVM: arm/arm64: timer: Switch to CLOCK_MONOTONIC_RAW"

  * Need enough contiguous memory to support GICv3 ITS table (LP: #1558828)
    - [Config] CONFIG_FORCE_MAX_ZONEORDER=13 on arm64
    - SAUCE: (no-up) arm64: gicv3: its: Increase FORCE_MAX_ZONEORDER for Cavium
      ThunderX

  * update arcmsr to version v1.30.00.22-20151126 to fix card timeouts
    (LP: #1559609)
    - arcmsr: fixed getting wrong configuration data
    - arcmsr: fixes not release allocated resource
    - arcmsr: make code more readable
    - arcmsr: adds code to support new Areca adapter ARC1203
    - arcmsr: changes driver version number
    - arcmsr: more readability improvements
    - arcmsr: Split dma resource allocation to a new function
    - arcmsr: change driver version to v1.30.00.22-20151126

  * server image has no keyboard, desktop image works (LP: #1559692)
    - [Config] Rework input-modules (d-i) list

  * PMU sup...

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-03-31 12:16 EDT-------
Verified on 4.4.0-16

root@s83lp41:~# uname -a
Linux s83lp41 4.4.0-16-generic #32-Ubuntu SMP Thu Mar 24 22:32:30 UTC 2016 s390x s390x s390x GNU/Linux

root@s83lp41:~# cat /boot/config-4.4.0-16-generic | grep _NUMA
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING=y
# CONFIG_NUMA_BALANCING_DEFAULT_ENABLED is not set
CONFIG_NUMA=y
CONFIG_NUMA_EMU=y

root@s83lp41:~# cat /boot/config-4.4.0-16-generic | grep _EMU_SIZE
CONFIG_EMU_SIZE=0x10000000

[Tim Gardner (timg-tpi)]

https://lists.ubuntu.com/archives/kernel-team/2017-February/082312.html

[Adam Conrad (adconrad)]

The verification of the Stable Release Update for linux-hwe has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Brad Figg (brad-figg)]

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-yakkety' to 'verification-done-yakkety'. If the problem still exists, change the tag 'verification-needed-yakkety' to 'verification-failed-yakkety'.

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 - 4.8.0-40.43

---------------
linux (4.8.0-40.43) yakkety; urgency=low

  * linux: 4.8.0-40.43 -proposed tracker (LP: #1667066)

  [ Andy Whitcroft ]
  * NFS client : permission denied when trying to access subshare, since kernel
    4.4.0-31 (LP: #1649292)
    - fs: Better permission checking for submounts

  * shaking screen (LP: #1651981)
    - drm/radeon: drop verde dpm quirks

  * [0bda:0328] Card reader failed after S3 (LP: #1664809)
    - usb: hub: Wait for connection to be reestablished after port reset

  * linux-lts-xenial 4.4.0-63.84~14.04.2 ADT test failure with linux-lts-xenial
    4.4.0-63.84~14.04.2 (LP: #1664912)
    - SAUCE: apparmor: fix link auditing failure due to, uninitialized var

  * In Ubuntu 17.04 : after reboot getting message in console like Unable to
    open file: /etc/keys/x509_ima.der (-2) (LP: #1656908)
    - SAUCE: ima: Downgrade error to warning

  * 16.04.2: Extra patches for POWER9 (LP: #1664564)
    - powerpc/mm: Fix no execute fault handling on pre-POWER5
    - powerpc/mm: Fix spurrious segfaults on radix with autonuma

  * ibmvscsis: Add SGL LIMIT (LP: #1662551)
    - ibmvscsis: Add SGL limit

  * [Hyper-V] Bug fixes for storvsc (tagged queuing, error conditions)
    (LP: #1663687)
    - scsi: storvsc: Enable tracking of queue depth
    - scsi: storvsc: Remove the restriction on max segment size
    - scsi: storvsc: Enable multi-queue support
    - scsi: storvsc: use tagged SRB requests if supported by the device
    - scsi: storvsc: properly handle SRB_ERROR when sense message is present
    - scsi: storvsc: properly set residual data length on errors

  * Ubuntu16.10-KVM:Big configuration with multiple guests running SRIOV VFs
    caused KVM host hung and all KVM guests down. (LP: #1651248)
    - KVM: PPC: Book 3S: XICS cleanup: remove XICS_RM_REJECT
    - KVM: PPC: Book 3S: XICS: correct the real mode ICP rejecting counter
    - KVM: PPC: Book 3S: XICS: Fix potential issue with duplicate IRQ resends
    - KVM: PPC: Book 3S: XICS: Implement ICS P/Q states
    - KVM: PPC: Book 3S: XICS: Don't lock twice when checking for resend

  * ISST-LTE:pNV: ppc64_cpu command is hung w HDs, SSDs and NVMe (LP: #1662666)
    - blk-mq: Avoid memory reclaim when remapping queues
    - blk-mq: Fix failed allocation path when mapping queues
    - blk-mq: Always schedule hctx->next_cpu

  * systemd-udevd hung in blk_mq_freeze_queue_wait testing unpartitioned NVMe
    drive (LP: #1662673)
    - percpu-refcount: fix reference leak during percpu-atomic transition

  * [Yakkety SRU] Enable KEXEC support in ARM64 kernel (LP: #1662554)
    - [Config] Enable KEXEC support in ARM64.

  * [Hyper-V] Fix ring buffer handling to avoid host throttling (LP: #1661430)
    - Drivers: hv: vmbus: On write cleanup the logic to interrupt the host
    - Drivers: hv: vmbus: On the read path cleanup the logic to interrupt the host
    - Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()

  * brd module compiled as built-in (LP: #1593293)
    - CONFIG_BLK_DEV_RAM=m

  * regession tests failing after stackprofile test is run (LP: #1661030)
    - SAUCE: fix regression with domain change in compla...