[PATCH 00/21] linux: Update to 5.15.85 and backport many IPFire 3.x changes

["Peter Müller" <peter.mueller@ipfire.org>]

[-- Attachment #1: Type: text/plain, Size: 4946 bytes --]

This patchset aims at updating the Linux kernel to 5.15.85, given that
the last release we shipped dates back a while ago. However, its primary
purpose is to backport some kernel changes recently made by Michael in
IPFire 3.x, whenever bringing these to the IPFire 2.x userbase is sensible
and/or feasible.

Patch descriptions are copy & past'ed from their IPFire 3.x counterparts,
which are referred to by their commit IDs in ipfire-3.x. Due to different
hardware situation as well as architecture maturity (this particularly
affects ARM), not all changes could be backported 1:1 or to a near-complete
extend.

Feedback is particularly appreciated regarding the last commit, which aims
at aligning the ARM kernel configuration files to the x86_64 one. Since
no real ARM hardware is at the author's disposal, this alignment has to be
taken with a pinch of salt.

As far as benchmarks are concerned, a 5.15.85 x86_64 kernel booted in an
IPFire 2.x VM on the basis of Core Update 172 introduced the following changes
in file size:

Location	Before		After
-------------------------------------------
/boot		48M		53M  (+ 5)
/lib/modules	58M		71M  (+13)
ISO		373M		394M (+21)

Contrary to its documentation, enabling the GCC stackleak plugin (which
is the current setting in IPFire 3.x as well) neither brought a notable
compile time increase, nor does it seem to slow down runtime operations
significantly. More thorough tests, especially on physical machines, are
however, yet to come.

Peter Müller (21):
  linux: Update to 5.15.85
  linux: Disable the entire PCMCIA/CardBus subsystem
  linux: Enable parallel crypto by default
  linux: Disable syscalls that allows processes to r/w other processes'
    memory
  linux: Disable the latent entropy plugin
  linux: Build all library routines as modules and disable self-tests
  linux: Build all HWRNGs as modules
  linux: Compile binfmt_misc as a module
  linux: Wipe all memory when rebooting on EFI
  linux: Disable the Distributed Lock Manager
  linux: Disable some character devices that do not make sense
  linux: Make graphics configruation sane
  linux: Disable all sorts of useless Device Mapper targets
  linux: Enable various modern ciphers/hashes/etc. and acceleration
  linux: Compress the kernel, modules and firmware using Zstandard
  linux: Disable ACPI configfs support
  linux: Enable support for more USB host controllers as modules
  linux: Poison kernel stack before returning from syscalls
  linux: Enable Landlock support
  linux: Update x86_64 rootfile
  linux: Align ARM kernel configurations as much as possible

 config/kernel/kernel.config.aarch64-ipfire    |  194 +-
 config/kernel/kernel.config.armv6l-ipfire     |  101 +-
 config/kernel/kernel.config.x86_64-ipfire     |  216 +-
 config/rootfiles/common/x86_64/linux          | 5954 ++++++++---------
 lfs/linux                                     |    9 +-
 .../linux-5.15-wifi-security-patches-1.patch  |   50 -
 .../linux-5.15-wifi-security-patches-10.patch |   98 -
 .../linux-5.15-wifi-security-patches-11.patch |   96 -
 .../linux-5.15-wifi-security-patches-12.patch | 1179 ----
 .../linux-5.15-wifi-security-patches-13.patch |  130 -
 .../linux-5.15-wifi-security-patches-14.patch |  107 -
 .../linux-5.15-wifi-security-patches-2.patch  |   59 -
 .../linux-5.15-wifi-security-patches-3.patch  |   49 -
 .../linux-5.15-wifi-security-patches-4.patch  |   96 -
 .../linux-5.15-wifi-security-patches-5.patch  |   56 -
 .../linux-5.15-wifi-security-patches-6.patch  |   39 -
 .../linux-5.15-wifi-security-patches-7.patch  |   60 -
 .../linux-5.15-wifi-security-patches-8.patch  |   94 -
 .../linux-5.15-wifi-security-patches-9.patch  |  126 -
 19 files changed, 3183 insertions(+), 5530 deletions(-)
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-1.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-10.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-11.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-12.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-13.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-14.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-2.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-3.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-4.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-5.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-6.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-7.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-8.patch
 delete mode 100644 src/patches/linux/linux-5.15-wifi-security-patches-9.patch

-- 
2.35.3