Re: [gentoo-user] Kernel upgrade confusion
On 30/12/2017 20:43, Jalus Bilieyich wrote: > Recently there was a kernel update and I don't want to reconfigure it > from scratch. In the official documentation, it told me to move the old > .config into the new kernel source tree and type > make oldconfig > > This is where I'm confused; which .config file (/proc/config.gz or > /boot/config) and where in the kernel source tree do I put this file in. > Either. As long as the *running* kernel is the one you want to copy from, the contents are identical. You als very likely have a third copy is /usr/src/, assuming you left the sources intact after kernel installation (the usual case) -- Alan McKinnon alan.mckin...@gmail.com
Re: [gentoo-user] Kernel upgrade confusion
This worked. Thank you all a thousand times!
Re: [gentoo-user] Kernel upgrade confusion
On 30/12/17 19:11, Mick wrote: to remove the symlink pointing to the previous kernel, to create a new symlink to the new kernel sources directory, Or, to use the supplied gentoo tools ... eselect kernel list eselect kernel set n to see what kernels the system thinks are available, and to change the current selected kernel. Note that "emerge --depclean" will clear out all the files IT KNOWS ABOUT in /usr/src, so if you don't clean it out manually it will be full of debris from previous kernels - basically all the output of make. But eselect kernel won't show those as available because depclean clears up all the references to them. Cheers, Wol
Re: [gentoo-user] Kernel upgrade confusion
Hi Jalus, On Saturday, 30 December 2017 18:43:12 GMT Jalus Bilieyich wrote: > Recently there was a kernel update and I don't want to reconfigure it > from scratch. In the official documentation, it told me to move the old > .config into the new kernel source tree and type > make oldconfig > > This is where I'm confused; which .config file (/proc/config.gz or > /boot/config) and where in the kernel source tree do I put this file in. You will need to *copy* your old/existing kernel .config file to the new kernel source directory. Where you copy it from depends on where you have stored your previous kernel .config file. It may be in your /boot, if you have copied it there from /usr/ src/linux/.config last time you compiled your kernel. It should be in /usr/ src/linux/ if this symlink is still pointing to your previous kernel. You may be able to obtain it from your /proc/config.gz if you have configured your kernel to use this option. So, as root you would for example do: cp /usr/src/linux-4.4.87-r1/.config /usr/src/linux/4.9.49-r1/ && \ rm /usr/src/linux && \ ln -s /usr/src/linux-4.9.49-r1 linux && \ cd /usr/src/linux && \ make oldconfig to copy the existing .config into the new kernel sources directory, to remove the symlink pointing to the previous kernel, to create a new symlink to the new kernel sources directory, to change your working directory into the new kernel source tree, and finally to run make oldconfig in order to configure any new options available in kernel 4.9.49-r1, without having to reconfigure each and every option already set in your kernel 4.4.87-r1. If you have a /proc/config.gz you can unpack it and redirect it to your new kernel source directory: zcat /proc/config.gz > /usr/src/linux-4.9.49-r1/.config before you proceed with the last four steps I showed above. HTH. -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] Kernel upgrade confusion
Hi Jalus, > This is where I'm confused; which .config file (/proc/config.gz or > /boot/config) The two should have the same content most of the time. You can use either. config.gz needs to be decompressed (e.g. with zcat). > where in the kernel source tree do I put this file in. In the root of the kernel source tree which is /usr/src/linux if the new kernel is set with eselect kernel. Make sure to read https://wiki.gentoo.org/wiki/Kernel/Upgrade which explains all these steps in detail. --- Andrew
Re: [gentoo-user] Kernel upgrade confusion
On 30/12/17 18:43, Jalus Bilieyich wrote: Recently there was a kernel update and I don't want to reconfigure it from scratch. In the official documentation, it told me to move the old .config into the new kernel source tree and type make oldconfig This is where I'm confused; which .config file (/proc/config.gz or /boot/config) and where in the kernel source tree do I put this file in. /usr/src/linux/.config Cheers, Wol
[gentoo-user] Kernel upgrade confusion
Recently there was a kernel update and I don't want to reconfigure it from scratch. In the official documentation, it told me to move the old .config into the new kernel source tree and type make oldconfig This is where I'm confused; which .config file (/proc/config.gz or /boot/config) and where in the kernel source tree do I put this file in.
