Good day! We have recently started to evaluate Linux 6.6 and noticed that we cannot disable CONFIG_KEXEC anymore, but keep CONFIG_CRASH_DUMP enabled. It seems to be related to commit 89cde455 ("kexec: consolidate kexec and crash options into kernel/Kconfig.kexec"), where a CONFIG_KEXEC dependency was added to CONFIG_CRASH_DUMP.
In our current kernel (Linux 6.1) we only enable CONFIG_KEXEC_FILE with enforced signature check to support the kernel crash dumping functionality and would like to keep CONFIG_KEXEC disabled for security reasons [1]. I was reading the long commit message, but the reason for adding CONFIG_KEXEC as a dependency for CONFIG_CRASH_DUMP evaded me. And I believe from the implementation perspective CONFIG_KEXEC_FILE should suffice here (as we successfully used it for crashdumps on Linux 6.1). Is there a reason for adding this dependency or is it just an oversight? Would some solution of requiring either CONFIG_KEXEC or CONFIG_KEXEC_FILE work here? Ignat [1]: https://mjg59.dreamwidth.org/28746.html