This Task is created to track the testing of RHEL-58641 on the Kernel RT variant. Task will transition to In-progress once builds are ready and please find build information in the Testable build field in RHEL-58641. To facilitate the merging of the main kernel ticket, please transition the Task to CLOSED status after verifying or addressing any blocking issues.

If variant has failed QA, please indicate Preliminary Testing: Failed in RHEL-58641.

This rebasing will includes several patchsets as below and many small cleanup/improvement/fixing patches, hence involves a lot of upstream patches backporting:

[PATCH linux-next v3 00/14] Split crash out from kexec and clean up related config items

[PATCH v28 0/8] crash: Kernel handling of CPU and memory hot un/plug

[PATCH v6 00/14] refactor Kconfig to consolidate KEXEC and CRASH options

[PATCH v3 0/9] kdump: use generic functions to simplify crashkernel reservation in arch