crashkernel — Reserve a portion of physical memory for kexec to use.
The kexec subsystem likes to have a portion of physical memory
reserved for it. This option reserves that memory from the
rest of the kernel and will switch to use it if the kernel panics.
specifies the amount of memory to
specifies the location for this memory
chunk. Both are measured in units of kilobytes (K),
megabytes (M), or gigabytes