genkernel - ignores .config on each new kernel version

[Gladdle]

Like the topic says it all: I use gentoo-sources & genkernel.
On a kernel update i do the following:
- I copy the old .config to the new kernel dir (cp /usr/src/linux-oldkenel/.config /usr/src/linux-newkenel/.config)
- With "eselect kernel" i select the new kernel
- I start "genkernel all"
Now i see EVERY PREVIOUS changed option is resetet: Waydroid, my WLAN Card RTL8852BE, systemd is enabled again and so on. I've searched the web, checked the configfiles. My /etc/genkernel.conf (without all comment lines):

Code: Select all

INSTALL="yes"
OLDCONFIG="yes"
MENUCONFIG="yes"
MOUNTBOOT="yes"
SAVE_CONFIG="yes"
NOCOLOR="false"
LVM="yes"
LUKS="yes"
FIRMWARE="yes"
FIRMWARE_DIR="/lib/firmware"
FIRMWARE_FILES="amdgpu/yellow_carp_asd.bin,amdgpu/yellow_carp_ce.bin,amdgpu/yellow_carp_dmcub.bin,amdgpu/yellow_carp_me.bin,
amdgpu/yellow_carp_mec2.bin,amdgpu/yellow_carp_mec.bin,amdgpu/yellow_carp_pfp.bin,amdgpu/yellow_carp_rlc.bin,amdgpu/yellow_carp_sdma.bin,
amdgpu/yellow_carp_ta.bin,amdgpu/yellow_carp_toc.bin,amdgpu/yellow_carp_vcn.bin"
BOOTLOADER="grub2"
MODULEREBUILD="yes"
BOOTDIR="/boot"
GK_SHARE="${GK_SHARE:-/usr/share/genkernel}"
CACHE_DIR="/var/cache/genkernel"
DISTDIR="${GK_SHARE}/distfiles"
LOGFILE="/var/log/genkernel.log"
LOGLEVEL=1
DEFAULT_KERNEL_SOURCE="/usr/src/linux"

You can see SAVE_CONFIG="yes" is set like explained in https://wiki.gentoo.org/wiki/Kernel/Upgrade. When i start "genkernel all" it looks like:

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* Gentoo Linux Genkernel; Version 4.3.17
* Using genkernel configuration from '/etc/genkernel.conf' ...
* Running with options: all

* Working with Linux kernel 6.12.41-gentoo for x86_64
* Using kernel config file '/etc/kernels/kernel-config-6.12.41-gentoo-x86_64' ...
* 
* Note: The version above is subject to change (depends on config and status of kernel sources).

* kernel: >> Initializing ...
*         >> Running 'make mrproper' ...
*         >> Running 'make oldconfig' ...
*         >> Invoking menuconfig ...
*         >> Kernel version has changed (probably due to config change) since genkernel start:
*            We are now building Linux kernel 6.12.41-gentoo-x86_64 for x86_64 ...
*         >> Compiling 6.12.41-gentoo-x86_64 bzImage ...
*         >> Compiling 6.12.41-gentoo-x86_64 modules ...
*         >> Installing 6.12.41-gentoo-x86_64 modules (and stripping) ...
*         >> Generating module dependency data ...
*         >> Compiling out-of-tree module(s) ...
*         >> Saving config of successful build to '/etc/kernels/kernel-config-6.12.41-gentoo-x86_64' ...

* initramfs: >> Initializing ...
*         >> Appending devices cpio data ...
*         >> Appending base_layout cpio data ...
*         >> Appending util-linux cpio data ...
*         >> Appending eudev cpio data ...
*         >> Appending devicemanager cpio data ...
*         >> Appending auxiliary cpio data ...
*         >> Appending busybox cpio data ...
*         >> Appending luks cpio data ...
*         >> Appending lvm cpio data ...
*         >> Appending modprobed cpio data ...
*         >> Appending firmware cpio data ...
*         >> Appending modules cpio data ...
*         >> Deduping cpio ...
*         >> Pre-generating initramfs' /etc/ld.so.cache ...
*         >> Compressing cpio data (.xz) ...

* Kernel compiled successfully!
* 
* You can customize Grub2 parameters in /etc/default/grub.
* Running grub-mkconfig to create '/boot/grub/grub.cfg' ...
* 
* Required kernel parameter:
* 
*       root=/dev/$ROOT
* 
* Where $ROOT is the device node for your root partition as the
* one specified in /etc/fstab

* WARNING... WARNING... WARNING...
* Additional kernel parameters that *may* be required to boot properly:
* - Add "dolvm" for LVM support
* - Add "crypt_root=<device>" for LUKS-encrypted root
* - Add "crypt_swap=<device>" for LUKS-encrypted swap

* Do NOT report kernel bugs as genkernel bugs unless your bug
* is about the default genkernel configuration...
* 
* Make sure you have the latest ~arch genkernel before reporting bugs.

So it seems he's importing and overwriting a config file from /etc/kernels - BUT i have a few kernels installed, NOT in use, so there is ONLY a configfile when i make "genkernel all". How can i make a config file and keep it?

Moderator note: Fixed a long design breaking line. -- Banana

[Gladdle]

I am an Idiot who should learn to read:

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# =========COMPILED UTILS CONFIGURATION=========
#
# Default location of kernel source
DEFAULT_KERNEL_SOURCE="/usr/src/linux"

# Default kernel config (only use to override using
# arch/%%ARCH%%/kernel-config-${VER}.${PAT} !)
#DEFAULT_KERNEL_CONFIG="${GK_SHARE}/arch/%%ARCH%%/kernel-config"
DEFAULT_KERNEL_CONFIG="/usr/src/linux/.config"

Problem maybe solved, but not tested yet.

[oxensepp]

Thank you for this post. I stumbled also across this issue.

BTW, there ist also a command line option, "--kernel-config=/etc/kernels/kernel-config-6.12.41-gentoo-x86_64"

Is this new? It looks like that I did not need it until now, so I am wondering.

[jburns]

The command line option "--kernel-config=/proc/config.gz" can be used to use the config of the running kernel if the config was built into the kernel.