On Sun, Mar 05, 2023 at 02:04:44PM +0100, Thorsten Leemhuis wrote: > +.. _patching_sbs: > + > + * In case you want to apply a kernel patch, do so now. Often a command like > + this will do the trick:: > + > + patch -p1 < ../proposed-fix.patch > + > + If the ``-p1`` is actually needed, depends on how the patch was created; in > + case it does not apply thus try without it. > + > + If you cloned the sources with git and anything goes sideways, run ``git > + reset --hard`` to undo any changes to the sources. Alternatively, if you have ``b4`` installed, you can prepare the patch with ``b4 am -l <message-id of the patch>``. The -l option adds a Link: to lore.kernel.org for the patch. Apply the resulting patch with ``git am``. It is often wise to branch-off from mainline before applying patches, to keep the remote-tracking mainline pristine. Create a branch with ``git checkout -b <branch name>``. > +Changes merged into the mainline repository are only synced to the master branch > +of the Linux stable repository every few hours. This lag most of the time is > +not something to worry about; but in case you really need the latest code, just > +add the mainline repo as additional remote and checkout the code from there:: > + > + git remote add mainline \ > + https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > + git fetch mainline > + git checkout --detach mainline/master You will most likely change the tracking remote for your master branch to mainline by ``git branch --set-upstream-to=mainline/master``. > +The step-by-step guide uses the default make targets (e.g. 'bzImage' and > +'modules' on x86) to build the image and the modules of your kernel, which later > +steps of the guide then install. You instead can also directly build everything > +and directly package it up by using one of the following targets: > + > + * ``make -j $(nproc --all) bindeb-pkg`` to generate a deb package > + > + * ``make -j $(nproc --all) binrpm-pkg`` to generate a rpm package > + > + * ``make -j $(nproc --all) tarbz2-pkg`` to generate a bz2 compressed tarball I used to try compiling kernel in rpm-based systems (at that time CentOS). make binrpm-pkg generates kernel headers, image, and sanitized kernel headers for libc packages. These three packages have to be installed together. However, the generated libc headers package most likely overwrite distro-installed one, thus rebuilding the world is necessary. I mind of that significant overhead, so I proceed to manually install the kernel. Thanks. -- An old man doll... just what I always wanted! - Clara
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