[CentOS] Replacing kernel-headers with custom compiled version (from kernel.org) - safe?

[Bagas Sanjaya]

On 26/06/19 23.51, Akemi Yagi wrote:
> On Wed, Jun 26, 2019 at 5:20 AM Bagas Sanjaya <bagasdotme at gmail.com> wrote:
>> Hello CentOS users,
>>
>> Currently I have compiled kernel version 4.19.37, which the source is from kernel.org. I compiled the kernel by following
>> steps:
>> - get the kernel tarball and unpack it
>> - install prerequisties as described in https://wiki.centos.org/HowTos/Custom_Kernel (in addition bc and openssl-devel)
>> - copy the kernel configuration:
>>     $ cp /boot/config-3.10.0-957.21.3.el7.x86_64 ~/linux-4.19.37/.config
>> - create configuration:
>>     $ cd ~/linux-4.19.37
>>     $ make olddefconfig
>>     $ make nconfig
>> - compile and create RPM package:
>>     $ make vmlinux
>>     $ make modules
>>     $ make rpm-pkg
>> - install kernel RPM:
>>     # yum install ~/rpmbuild/RPMS/x86_64/kernel-*.rpm
>>
>> However, in the last step (installing kernel RPM), I got following notice:
>> ================================================================================
>>    Package        Arch   Version
>>                            Repository                                        Size
>> ================================================================================
>> Installing:
>>    kernel         x86_64 4.19.37_sentinel_custom-1
>>                            /kernel-4.19.37_sentinel_custom-1.x86_64         209 M
>>    kernel-devel   x86_64 4.19.37_sentinel_custom-1
>>                            /kernel-devel-4.19.37_sentinel_custom-1.x86_64   817 M
>>    kernel-headers x86_64 4.19.37_sentinel_custom-1
>>                            /kernel-headers-4.19.37_sentinel_custom-1.x86_64 4.6 M
>>        replacing  kernel-headers.x86_64 3.10.0-957.21.3.el7
>>
>> Transaction Summary
>> ================================================================================
>> Install  3 Packages
>>
>> There, the compiled kernel-headers package (4.19.37_sentinel_custom-1) is about to replace stock version
>> (3.10.0-957.21.3.el7). Is it safe to continue installing from compiled RPM package above, or install kernel manually?
> In general, you want to keep the distro's kernel-headers unless you
> also plan to play with glibc. You may find the following article
> useful:
>
> https://kernelnewbies.org/KernelHeaders
>
> Akemi
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So is it safe to install kernel RPMs generated by compilation from kernel.org tarball, or should I stick to manual
install?