Arch Linux User Repository

Adding

scripts/config --disable CONFIG_IMA_ARCH_POLICY

to myconfig does solve the "Failed to insert module 'nvidia': Key was rejected by service" problem.

Anyone who configured secure boot using sbctl and want to load dkms modules can try this solution.

This package have several variables to enable/disable features.

##
## The following variables can be customized at build time. Use env or export to change at your wish
##
##   Example: env _microarchitecture=98 use_numa=n use_tracers=n makepkg -sc
##
## Look inside 'choose-gcc-optimization.sh' to choose your microarchitecture
## Valid numbers between: 0 to 99
## Default is: 0 => generic
## Good option if your package is for one machine: 98 (Intel native) or 99 (AMD native)
if [ -z ${_microarchitecture+x} ]; then
  _microarchitecture=0
fi

## Disable NUMA since most users do not have multiple processors. Breaks CUDA/NvEnc.
## Archlinux and Xanmod enable it by default.
## Set variable "use_numa" to: n to disable (possibly increase performance)
##                             y to enable  (stock default)
if [ -z ${use_numa+x} ]; then
  use_numa=y
fi

## Since upstream disabled CONFIG_STACK_TRACER (limits debugging and analyzing of the kernel)
## you can enable them setting this option. Caution, because they have an impact in performance.
## Stock Archlinux has this enabled. 
## Set variable "use_tracers" to: n to disable (possibly increase performance, XanMod default)
##                                y to enable  (Archlinux default)
if [ -z ${use_tracers+x} ]; then
  use_tracers=n
fi

# Unique compiler supported upstream is GCC
## Choose between GCC and CLANG config (default is GCC)
## Use the environment variable "_compiler=clang"
if [ "${_compiler}" = "clang" ]; then
  _compiler_flags="CC=clang HOSTCC=clang LLVM=1 LLVM_IAS=1"
fi

# Choose between the 4 main configs for stable branch. Default x86-64-v1 which use CONFIG_GENERIC_CPU2:
# Possible values: config_x86-64-v1 (default) / config_x86-64-v2 / config_x86-64-v3 / config_x86-64-v4
# This will be overwritten by selecting any option in microarchitecture script
# Source files: https://github.com/xanmod/linux/tree/5.17/CONFIGS/xanmod/gcc
if [ -z ${_config+x} ]; then
  _config=config_x86-64-v1
fi

# Compress modules with ZSTD (to save disk space)
if [ -z ${_compress_modules+x} ]; then
  _compress_modules=n
fi

# Compile ONLY used modules to VASTLY reduce the number of modules built
# and the build time.
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db script a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD read the database kept if it exists
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
if [ -z ${_localmodcfg} ]; then
  _localmodcfg=n
fi

# Tweak kernel options prior to a build via nconfig
if [ -z ${_makenconfig} ]; then
  _makenconfig=n
fi

Personally I'm running now xanmod kernel compiled with this:

env _microarchitecture=98 use_tracers=n use_numa=n _localmodcfg=y _compress_modules=y makepkg -sic

Also, you can now create the file myconfig in your local repo to build this package with a custom config or use ${XDG_CONFIG_HOME}/linux-xanmod/myconfig. This file can be a full kernel config or be a script with several entries to add/remove options (you have several examples in PKGBUILD by using scripts/config):

Code involved:

  for _myconfig in "${SRCDEST}/myconfig" "${HOME}/.config/linux-xanmod/myconfig" "${XDG_CONFIG_HOME}/linux-xanmod/myconfig" ; do
    if [ -f "${_myconfig}" ] && [ "$(wc -l <"${_myconfig}")" -gt "0" ]; then
      if grep -q 'scripts/config' "${_myconfig}"; then
        # myconfig is a partial file. Executing as a script
        msg2 "Applying myconfig..."
        bash -x "${_myconfig}"
      else
        # myconfig is a full config file. Replacing default .config
        msg2 "Using user CUSTOM config..."
        cp -f "${_myconfig}" .config
      fi
      echo
      break
    fi
  done

Here's some information about how people fixed the issue with the script for selecting microarchitecture and the CONFIG_X86_L1_CACHE_SHIFT identifier: https://gitlab.com/xanmod/linux/-/issues/446#note_2729829934

I'm building this package like this: env _compiler=clang _microarchitecture=99 use_tracers=n use_numa=n _compress_modules=y _localmodcfg=y makepkg -sficC. During the build, an error appears: ./arch/x86/include/asm/tlbflush.h:153:1: error: use of undeclared identifier 'CONFIG_X86_L1_CACHE_SHIFT'. As far as I understand, the identifier 'CONFIG_X86_L1_CACHE_SHIFT' is missing from .config. According to the patch, it modifies src/linux-6.16/CONFIGS/x86_64/config, then this config is copied to src/linux-6.16/.config, and something else happens to this file afterward, after which 'CONFIG_X86_L1_CACHE_SHIFT=6' disappears from it.

The problem occurs only when I select "Native optimizations autodetected" (98, 99) as the microarchitecture. When I specifically choose my processor's architecture (Zen2 - 12), the build proceeds without errors.

@derfehler sorry about that. I merged PKGBUILD with -edge yesterday, but I didn't test it. Should be fixed now.

@smn try to delete src directory before building it again

Even when pointing cp -vf CONFIGS/xanmod/gcc/${_config} .config to CONFIGS/x86-64/config, the package does not build for me (patches fail to apply).

when compiling there is an error that there is no file at the path “CONFIGS/xanmod/gcc/config_x86-64-v2”. Now the config is in a different path “CONFIGS/x86-64/config”

Hi. Module compression does not work without

scripts/config --enable CONFIG_MODULE_COMPRESS

@murlakatamenka thank you. Will be added in next release.

@figue localmodconfig part could be updated:

• https://wiki.archlinux.org/index.php?title=Modprobed-db&diff=prev&oldid=810531
• https://wiki.archlinux.org/title/Modprobed-db#Using_the_official_Arch_kernel_PKGBUILD
• https://www.kernel.org/doc/html/latest/admin-guide/quickly-build-trimmed-linux.html (or github permalink)

Could be:

yes '' | make LSMOD="$HOME/.config/modprobed.db" localmodconfig

@figue @Riedler encountered the same error when compiling linux-xanmod 6.11.11-1. solution was adding scripts/config --disable CONFIG_BPF_EVENTS to myconfig.

@figue oh sweet, didn't know that would work, will try. I'm linking gcc and clang to force it to use ccache, couldn't get it to work any other way