[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ Christian Ehrhardt ]

Dropping server subscription as the remaining (xen) task is incomplete
still

** Tags removed: server-next

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Released
Status in qemu package in Ubuntu:
  Fix Released
Status in xen package in Ubuntu:
  Incomplete
Status in linux source package in Bionic:
  Fix Released
Status in qemu source package in Bionic:
  Fix Released
Status in xen source package in Bionic:
  Won't Fix

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.15.0-15.16

---
linux (4.15.0-15.16) bionic; urgency=medium

  * linux: 4.15.0-15.16 -proposed tracker (LP: #1761177)

  * FFe: Enable configuring resume offset via sysfs (LP: #1760106)
- PM / hibernate: Make passing hibernate offsets more friendly

  * /dev/bcache/by-uuid links not created after reboot (LP: #1729145)
- SAUCE: (no-up) bcache: decouple emitting a cached_dev CHANGE uevent

  * Ubuntu18.04:POWER9:DD2.2 - Unable to start a KVM guest with default machine
type(pseries-bionic) complaining "KVM implementation does not support
Transactional Memory, try cap-htm=off" (kvm) (LP: #1752026)
- powerpc: Use feature bit for RTC presence rather than timebase presence
- powerpc: Book E: Remove unused CPU_FTR_L2CSR bit
- powerpc: Free up CPU feature bits on 64-bit machines
- powerpc: Add CPU feature bits for TM bug workarounds on POWER9 v2.2
- powerpc/powernv: Provide a way to force a core into SMT4 mode
- KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9
- KVM: PPC: Book3S HV: Work around XER[SO] bug in fake suspend mode
- KVM: PPC: Book3S HV: Work around TEXASR bug in fake suspend state

  * Important Kernel fixes to be backported for Power9 (kvm) (LP: #1758910)
- powerpc/mm: Fixup tlbie vs store ordering issue on POWER9

  * Ubuntu 18.04 - IO Hang on some namespaces when running HTX with 16
namespaces  (Bolt / NVMe) (LP: #1757497)
- powerpc/64s: Fix lost pending interrupt due to race causing lost update to
  irq_happened

  * fwts-efi-runtime-dkms 18.03.00-0ubuntu1: fwts-efi-runtime-dkms kernel module
failed to build (LP: #1760876)
- [Packaging] include the retpoline extractor in the headers

linux (4.15.0-14.15) bionic; urgency=medium

  * linux: 4.15.0-14.15 -proposed tracker (LP: #1760678)

  * [Bionic] mlx4 ETH - mlnx_qos failed when set some TC to vendor
(LP: #1758662)
- net/mlx4_en: Change default QoS settings

  * AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
(LP: #1759312)
- powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features

  * Bionic update to 4.15.15 stable release (LP: #1760585)
- net: dsa: Fix dsa_is_user_port() test inversion
- openvswitch: meter: fix the incorrect calculation of max delta_t
- qed: Fix MPA unalign flow in case header is split across two packets.
- tcp: purge write queue upon aborting the connection
- qed: Fix non TCP packets should be dropped on iWARP ll2 connection
- sysfs: symlink: export sysfs_create_link_nowarn()
- net: phy: relax error checking when creating sysfs link netdev->phydev
- devlink: Remove redundant free on error path
- macvlan: filter out unsupported feature flags
- net: ipv6: keep sk status consistent after datagram connect failure
- ipv6: old_dport should be a __be16 in __ip6_datagram_connect()
- ipv6: sr: fix NULL pointer dereference when setting encap source address
- ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
- mlxsw: spectrum_buffers: Set a minimum quota for CPU port traffic
- net: phy: Tell caller result of phy_change()
- ipv6: Reflect MTU changes on PMTU of exceptions for MTU-less routes
- net sched actions: return explicit error when tunnel_key mode is not
  specified
- ppp: avoid loop in xmit recursion detection code
- rhashtable: Fix rhlist duplicates insertion
- test_rhashtable: add test case for rhltable with duplicate objects
- kcm: lock lower socket in kcm_attach
- sch_netem: fix skb leak in netem_enqueue()
- ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event()
- net: use skb_to_full_sk() in skb_update_prio()
- net: Fix hlist corruptions in inet_evict_bucket()
- s390/qeth: free netdevice when removing a card
- s390/qeth: when thread completes, wake up all waiters
- s390/qeth: lock read device while queueing next buffer
- s390/qeth: on channel error, reject further cmd requests
- soc/fsl/qbman: fix issue in qman_delete_cgr_safe()
- dpaa_eth: fix error in dpaa_remove()
- dpaa_eth: remove duplicate initialization
- dpaa_eth: increment the RX dropped counter when needed
- dpaa_eth: remove duplicate increment of the tx_errors counter
- dccp: check sk for closed state in dccp_sendmsg()
- ipv6: fix access to non-linear packet in ndisc_fill_redirect_hdr_option()
- l2tp: do not accept arbitrary sockets
- net: ethernet: arc: Fix a potential memory leak if an optional regulator 
is
  deferred
- net: ethernet: ti: cpsw: add check for in-band mode setting with RGMII PHY
  interface
- net: fec: Fix unbalanced PM runtime calls
- net/iucv: Free memory obtained by kzalloc
- netlink: avoid a double skb free in genlmsg_mcast()
- net: Only honor ifindex in IP_PKTINFO if non-0
- net: systemport: Rewrite __bcm_sysport_tx_reclaim()
- 

[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[Stefan Bader]

Due to time constraints and because we would deviate further and further
away from Debian, we are not planning to update the Xen version for
Bionic.

** Changed in: xen (Ubuntu Bionic)
   Status: Incomplete => Won't Fix

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https://bugs.launchpad.net/bugs/1739665

Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Fix Released
Status in xen package in Ubuntu:
  Incomplete
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Fix Released
Status in xen source package in Bionic:
  Won't Fix

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ChristianEhrhardt]

There wasn't a xen commit listed (and we didn't bump the xen version so we 
haven't picked it up by accident).
I'd assume this is a Won't Fix for 18.04 and might appear sometime later.

Is there any xen change to consider (later on) or was xen just
optionally listed but doesn't come to life?

** Changed in: xen (Ubuntu Bionic)
   Status: New => Incomplete

** Changed in: xen (Ubuntu Bionic)
   Importance: Undecided => Wishlist

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1739665

Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Fix Released
Status in xen package in Ubuntu:
  Incomplete
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Fix Released
Status in xen source package in Bionic:
  Incomplete

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[Launchpad Bug Tracker]

This bug was fixed in the package qemu - 1:2.11+dfsg-1ubuntu6

---
qemu (1:2.11+dfsg-1ubuntu6) bionic; urgency=medium

  * Remove LP: 1752026 changes to d/p/ubuntu/define-ubuntu-machine-types.patch.
The Kernel fixes are preferred and already committed to the kernel.
Therefore remove the default disabling of the HTM feature (LP: #1761175)
  * d/p/ubuntu/lp1739665-SSE-AVX-AVX512-cpu-features.patch: Enable new
SSE/AVX/AVX512 cpu features (LP: #1739665)
  * d/p/ubuntu/lp1740219-continuous-space-commpage.patch: make Arm
space+commpage continuous which avoids long startup times on
qemu-user-static (LP: #1740219)
  * d/p/ubuntu/lp-1761372-*: provide pseries-bionic-2.11-sxxm type as
convenience with all meltdown/spectre workarounds enabled by default.
This is not the default type following upstream and x86 on that.
(LP: #1761372).
  * d/p/ubuntu/lp-1704312-1-* provide means to manually handle filesystem-dax
with pmem by backporting align and unarmed options (LP: #1704312).
  * d/p/ubuntu/lp-1762315-slirp-Add-domainname.patch: slirp: Add domainname
option to slirp's DHCP server (LP: #1762315)

 -- Christian Ehrhardt   Wed, 04 Apr
2018 15:16:07 +0200

** Changed in: qemu (Ubuntu Bionic)
   Status: Triaged => Fix Released

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Fix Released
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Fix Released
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739665/+subscriptions

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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ChristianEhrhardt]

PPA: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3225

Regression test against ppa was ok tonighz, but I need to respin to add
more things before pushing to Bionic.

If you want to pre-test feel free to use this PPA.
Given the change thou I assume we can just let it roll in (under usual 
regression checks being ok)

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Triaged
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Triaged
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739665/+subscriptions

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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[Łukasz Zemczak]

FFe for qemu approved, you can proceed now. Will any similar FFe be
required for xen as well?

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Triaged
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Triaged
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ChristianEhrhardt]

It would be required for Xen as well if it will be done, but I didn't
hear on Xen in regard to this so I don't know.

SMB might share his opinion on this for xen and he is generally
subscribed to xen so he will see the updates.

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Triaged
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Triaged
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ChristianEhrhardt]

I'll ping the release team to ack the FFE:
To make it easier, the change is really just "giving names to formerly 
undefined bits" 
=> 
https://git.qemu.org/?p=qemu.git;a=commit;h=aff9e6e46a343e1404498be4edd03db1112f0950

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Triaged
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Triaged
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1739665] Re: [FFE][Feature] KVM CLX avx512_vnni

[ChristianEhrhardt]

Hi,
For Qemu this needs a a feature freeze exception for the qemu change was 
identified after 1st of March.
Sorry, I missed the update with the upstream sha for a bit, otherwise I'd have 
marked it as FFE earlier, but IMHO it is no problem.
The patch is rather small and does not imply extra danger IMHO.

So getting a Feature Freeze ack by the release team is very likely.
But lets stay formal and do that.

Afterwards I can upload the package with the qemu fix applied.

** Summary changed:

- [Feature] KVM CLX avx512_vnni
+ [FFE][Feature] KVM CLX avx512_vnni

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Title:
  [FFE][Feature] KVM CLX avx512_vnni

Status in linux package in Ubuntu:
  Fix Committed
Status in qemu package in Ubuntu:
  Triaged
Status in xen package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in qemu source package in Bionic:
  Triaged
Status in xen source package in Bionic:
  New

Bug description:
  This feature has been released in ICX platform and the definition of 
AVX512_VNNI as below
   AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512. 
cpuid.(7,0). ECX[11]

  This is a new instruction to support machine learning. This
  instructions is pure HW features, currently, there is no test cases
  for this new instruction, we only check CPUID info by cpuid tool.

  Target Kernel: 4.16
  Target Qemu: 2.12
  Target Release: 18.04

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739665/+subscriptions

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