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

@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

@Nebrassy I'm not sure why you need to link gcc or clang to /usr/local/bin

And -j should work if you have configured in /etc/makepkg.conf

to use ccache, the only method I've found is to do

ccache -M 10G
ln -s /usr/bin/ccache /usr/local/bin/gcc
ln -s /usr/bin/ccache /usr/local/bin/clang

not sure if there's a better way for it

also, I've noticed only a couple threads are being used, at least with clang that is, had to add this which made the build go much faster, especially with ccache.

From a1c25c2366bf57304896aa952580796b7e8e44ab Mon Sep 17 00:00:00 2001
From: nebrassy <nebras30@gmail.com>
Date: Wed, 31 Jul 2024 01:01:00 +0530
Subject: [PATCH] multithreading with clang

---
 PKGBUILD | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PKGBUILD b/PKGBUILD
index 12d61b6..bf2d4e7 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -36,7 +36,7 @@ fi
 ## 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"
+  _compiler_flags="CC=clang HOSTCC=clang LLVM=1 LLVM_IAS=1 -j $(($(nproc) - 1))"
 fi

 # Choose between the 4 main configs for stable branch. Default x86-64-v1 which use CONFIG_GENERIC_CPU2:
-- 
2.45.2