1. A method, comprising: tagging, by a processor executing a first operating system kernel, a region of a volatile memory coupled to the processor; initiating a boot of a second operating system kernel while preserving in the volatile memory contents stored therein; retrieving, following the boot of the second operating system kernel, a set of parameters referencing the tagged region from the volatile memory; and using the tagged region, based on the retrieved set of parameters, wherein tagging the volatile memory region comprises identifying the set of parameters referencing the tagged region, and storing, to the volatile memory, the set of parameters.