Kernel transitioning in a protected kernel environment

摘要

Methods, systems, and computer program products are included for providing one or more additional kernels kernel in a protected kernel environment. A method includes providing, by a hypervisor, a virtual machine that includes a first kernel. A first portion of memory of the virtual machine is allocated for the first kernel and a second portion of memory of the virtual machine is allocated for a second kernel. The virtual machine executes the first kernel. The hypervisor disables access privileges corresponding to the second portion of memory. Execution is transitioned from the first kernel to the second kernel by clearing memory corresponding to the first kernel, enabling access privileges corresponding to the second portion of the memory, and executing the second kernel on the virtual machine.