From: Kairui Song on gitlab.com Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1171 NOTE: Truncated patchset due to missing public @redhat.com email address on your GitLab profile at https://gitlab.com/-/profile. Once that is fixed, close and reopen the merge request to retrigger sending the emails. It has been a long-term demand for having a default crashkernel value for each kernel build. This helps to manage kernel's crashkernel usage by kernel version and provide users a reference default value. RHEL kernels support a `crashkernel=auto` cmdline param. And kernel have a built-in default value used when `auto` is specified. Many attempts are made to push this upstream. Recent attempt to push this upstream raised a lot of discussions [1]. Upstream is not accepting this `crashkernel=auto` design. So after more discussions, instead of adding a default value in kernel, just add a config that packaged with kernel is more doable. Other packages, like kexec-tools[2], can use this as a reference and update kernel cmdline param. [1]: https://lore.kernel.org/linux-mm/20210507010432.IN24PudKT%25akpm@linux- foundation.org/ [2]: https://lists.fedoraproject.org/archives/list/kexec@lists.fedoraproject.o rg/thread/MKUSELX3GKKXPFNLEGJMWXSS2LADRPMQ/ Signed-off-by: Kairui Song <kasong(a)redhat.com&gt; --- Documentation/admin-guide/kdump/kdump.rst | 12 ------------ kernel/crash_core.c | 28 ++-------------------------- redhat/Makefile | 1 + redhat/generate_crashkernel_default.sh | 25 +++++++++++++++++++++++++ redhat/kernel.spec.template | 5 +++++ 5 files changed, 33 insertions(+), 38 deletions(-)