kexec
Directly reboot into a new kernel. tldr-pages
On Linux
Linux
Load a new kernel
kexec --load path/to/kernel --initrd=path/to/initrd --command-line=argumentsIdentifyLoad a new kernel with current boot parameters
kexec --load path/to/kernel --initrd=path/to/initrd --reuse-cmdlineIdentifyExecute a currently loaded kernel
kexec --execIdentifyUnload current kexec target kernel
kexec --unloadIdentify