aws: Backport latest ENA driver in upstream Linux to enable IRQ moderation

[Philip Cox]

SRU Justification:

[Impact]

In Ubuntu AMIs for x86 and Graviton based EC2 instances, the standard Ubuntu AMI comes without IRQ moderation enabled for ENA, which for our latest generation instances with networking heavy workloads is up to a 25% performance regression (i.e. NGINX in a load-balancing configuration).

[Fix]

The mainline Linux kernel will now support IRQ moderation by default for ENA in the 6.9 kernel release via this patch: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/drivers/net/ethernet/amazon/ena?id=50d7a2660579889fba28b7e4543d4ce85aa2311b

[Test Plan]

AWS tested

[Where problems could occur]

By enabling adaptive coalescing, the default interrupt behaviour will by changed to be more adaptive, which shows improvements on heavy network workloads, but my change the behaviour and performance on other network workloads differently. Rather than handling the interrupts based off of a fixed amount of time elapsed, it will change to an adaptive based approach. There should be no negative impact on light workloads, and a positive impact on heavy work loads. If there is an impact though, this option can be disabled via the ethtool command.

[Other Info]

SF: 00380449

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws/5.4.0-1122.132 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-focal-linux-aws' to 'verification-done-focal-linux-aws'. If the problem still exists, change the tag 'verification-needed-focal-linux-aws' to 'verification-failed-focal-linux-aws'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws/6.5.0-1017.17 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-mantic-linux-aws' to 'verification-done-mantic-linux-aws'. If the problem still exists, change the tag 'verification-needed-mantic-linux-aws' to 'verification-failed-mantic-linux-aws'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws-fips/5.15.0-1057.63+fips1 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-jammy-linux-aws-fips' to 'verification-done-jammy-linux-aws-fips'. If the problem still exists, change the tag 'verification-needed-jammy-linux-aws-fips' to 'verification-failed-jammy-linux-aws-fips'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws-5.15/5.15.0-1057.63~20.04.1 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-focal-linux-aws-5.15' to 'verification-done-focal-linux-aws-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-aws-5.15' to 'verification-failed-focal-linux-aws-5.15'.

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-aws - 5.4.0-1122.132

---------------
linux-aws (5.4.0-1122.132) focal; urgency=medium

  * focal/linux-aws: 5.4.0-1122.132 -proposed tracker (LP: #2055639)

  * Focal update: v5.4.267 upstream stable release (LP: #2054406)
    - [Config] Update annotations for CONFIG_SND_MESON_CODEC_GLUE

  * Packaging resync (LP: #1786013)
    - [Packaging] drop ABI data
    - debian.aws/dkms-versions -- update from kernel-versions (main/2024.03.04)

  * aws: Backport latest ENA driver in upstream Linux to enable IRQ moderation
    (LP: #2056475)
    - net: ena: Enable DIM by default

  * tcp: Add memory barrier to tcp_push() (LP: #2051727)
    - tcp: Add memory barrier to tcp_push()

  [ Ubuntu: 5.4.0-175.195 ]

  * focal/linux: 5.4.0-175.195 -proposed tracker (LP: #2055684)
  * Packaging resync (LP: #1786013)
    - [Packaging] drop ABI data
    - [Packaging] update annotations scripts
    - debian.master/dkms-versions -- update from kernel-versions (main/2024.03.04)
  * Drop ABI checks from kernel build (LP: #2055686)
    - [Packaging] Remove in-tree abi checks
    - [Packaging] Bring back install-<flavour> prerequisite for checks-<flavour>
    - [Packaging] Remove abi-check from final-checks
  * Cranky update-dkms-versions rollout (LP: #2055685)
    - [Packaging] remove update-dkms-versions
    - Move debian/dkms-versions to debian.master/dkms-versions
    - [Packaging] Replace debian/dkms-versions with $(DEBIAN)/dkms-versions
    - [Packaging] remove update-version-dkms
  * linux-tools-common: man page of usbip[d] is misplaced (LP: #2054094)
    - [Packaging] rules: Put usbip manpages in the correct directory
  * CVE-2024-23851
    - dm ioctl: log an error if the ioctl structure is corrupted
    - dm: limit the number of targets and parameter size area
  * Focal update: v5.4.268 upstream stable release (LP: #2055075)
    - f2fs: explicitly null-terminate the xattr list
    - pinctrl: lochnagar: Don't build on MIPS
    - ALSA: hda - Fix speaker and headset mic pin config for CHUWI CoreBook XPro
    - ASoC: Intel: Skylake: Fix mem leak in few functions
    - ASoC: nau8822: Fix incorrect type in assignment and cast to restricted
      __be16
    - ASoC: Intel: Skylake: mem leak in skl register function
    - ASoC: cs43130: Fix the position of const qualifier
    - ASoC: cs43130: Fix incorrect frame delay configuration
    - ASoC: rt5650: add mutex to avoid the jack detection failure
    - nouveau/tu102: flush all pdbs on vmm flush
    - net/tg3: fix race condition in tg3_reset_task()
    - ASoC: da7219: Support low DC impedance headset
    - nvme: introduce helper function to get ctrl state
    - drm/exynos: fix a potential error pointer dereference
    - drm/exynos: fix a wrong error checking
    - clk: rockchip: rk3128: Fix HCLK_OTG gate register
    - jbd2: correct the printing of write_flags in jbd2_write_superblock()
    - drm/crtc: Fix uninit-value bug in drm_mode_setcrtc
    - neighbour: Don't let neigh_forced_gc() disable preemption for long
    - tracing: Have large events show up as '[LINE TOO BIG]' instead of nothing
    - tracing: Add size check when printing trace_marker output
    - ring-buffer: Do not ...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-aws - 6.5.0-1017.17

---------------
linux-aws (6.5.0-1017.17) mantic; urgency=medium

  * mantic/linux-aws: 6.5.0-1017.17 -proposed tracker (LP: #2055564)

  * Packaging resync (LP: #1786013)
    - [Packaging] drop ABI data
    - debian.aws/dkms-versions -- update from kernel-versions (main/2024.03.04)

  * linux: please move dmi-sysfs.ko (CONFIG_DMI_SYSFS for SMBIOS support) from
    linux-modules-extra to linux-modules (LP: #2045561)
    - [Packaging] Move dmi-sysfs.ko into linux-modules

  * linux: please move erofs.ko (CONFIG_EROFS for EROFS support) from linux-
    modules-extra to linux-modules (LP: #2054809)
    - UBUNTU [Packaging]: Include erofs in linux-modules instead of linux-modules-
      extra

  * aws: Backport latest ENA driver in upstream Linux to enable IRQ moderation
    (LP: #2056475)
    - net: ena: Enable DIM by default

  * tcp: Add memory barrier to tcp_push() (LP: #2051727)
    - tcp: Add memory barrier to tcp_push()

  [ Ubuntu: 6.5.0-27.28 ]

  * mantic/linux: 6.5.0-27.28 -proposed tracker (LP: #2055584)
  * Packaging resync (LP: #1786013)
    - [Packaging] drop ABI data
    - [Packaging] update annotations scripts
    - debian.master/dkms-versions -- update from kernel-versions (main/2024.03.04)
  * CVE-2024-26597
    - net: qualcomm: rmnet: fix global oob in rmnet_policy
  * CVE-2024-26599
    - pwm: Fix out-of-bounds access in of_pwm_single_xlate()
  * Drop ABI checks from kernel build (LP: #2055686)
    - [Packaging] Remove in-tree abi checks
  * Cranky update-dkms-versions rollout (LP: #2055685)
    - [Packaging] remove update-dkms-versions
    - Move debian/dkms-versions to debian.master/dkms-versions
    - [Packaging] Replace debian/dkms-versions with $(DEBIAN)/dkms-versions
  * linux: please move erofs.ko (CONFIG_EROFS for EROFS support) from linux-
    modules-extra to linux-modules (LP: #2054809)
    - UBUNTU [Packaging]: Include erofs in linux-modules instead of linux-modules-
      extra
  * performance: Scheduler: ratelimit updating of load_avg (LP: #2053251)
    - sched/fair: Ratelimit update to tg->load_avg
  * IB peer memory feature regressed in 6.5 (LP: #2055082)
    - SAUCE: RDMA/core: Introduce peer memory interface
  * linux-tools-common: man page of usbip[d] is misplaced (LP: #2054094)
    - [Packaging] rules: Put usbip manpages in the correct directory
  * CVE-2024-23851
    - dm: limit the number of targets and parameter size area
  * CVE-2024-23850
    - btrfs: do not ASSERT() if the newly created subvolume already got read
  * x86: performance: tsc: Extend watchdog check exemption to 4-Sockets platform
    (LP: #2054699)
    - x86/tsc: Extend watchdog check exemption to 4-Sockets platform
  * linux: please move dmi-sysfs.ko (CONFIG_DMI_SYSFS for SMBIOS support) from
    linux-modules-extra to linux-modules (LP: #2045561)
    - [Packaging] Move dmi-sysfs.ko into linux-modules
  * Fix AMD brightness issue on AUO panel (LP: #2054773)
    - drm/amdgpu: make damage clips support configurable
  * Mantic update: upstream stable patchset 2024-02-28 (LP: #2055199)
    - f2fs: explicitly null-terminate the xattr list
    - pinctrl: lochnagar: Don't build on MI...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-aws - 5.15.0-1057.63

---------------
linux-aws (5.15.0-1057.63) jammy; urgency=medium

  * Packaging resync (LP: #1786013)
    - debian.aws/dkms-versions -- update from kernel-versions (main/2024.03.04)

 -- Philip Cox <email address hidden> Tue, 19 Mar 2024 12:10:59 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-aws - 6.8.0-1006.6

---------------
linux-aws (6.8.0-1006.6) noble; urgency=medium

  * noble/linux-aws: 6.8.0-1006.6 -proposed tracker (LP: #2061868)

  * Rebase on 6.8.0-28.28

 -- Andrea Righi <email address hidden> Tue, 16 Apr 2024 19:26:16 +0200