How to modify a Linux kernel header file without compiling like livepatch?

Asked Jun 20 '23 at 08:35

Active Jun 20 '23 at 08:35

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I want to change struct members layout in a header file to prevent false sharing.But I have to recompile the entire kernel and install the new kernel after that.

Is there any methods to modify Linux kernel header file without recompiling the entire kernel? Livepatch only support modifing some functions in c file, but not header file.

I tried to make some code modifications in the .c file, but doing so can introduce unpredictable risks.

asked Jun 20 '23 at 08:35

Mercurial

1

Header files are only used by the compiler. – Ian Abbott Jun 21 '23 at 11:17
@IanAbbott Thank you for answer. Is there anything similar method to kernel hotpatching if I want to avoid the false sharing problem by reayouting a struct in a header file? – Mercurial Jun 23 '23 at 14:06
You would need to compile the kernel anyway to determine the binary diffs for a hot patch. – Ian Abbott Jun 23 '23 at 14:13

How to modify a Linux kernel header file without compiling like livepatch?

0 Answers0