Booting and shutdown

7.1 LPAR mode z/VM guest KVM guest

These device drivers and features are useful in the context of booting and shutting down instances of Linux® on IBM® Z.

Console device drivers
The console device drivers support terminal devices for basic Linux control, for example, for booting Linux, for troubleshooting, and for displaying Linux kernel messages.
Initial program loader for IBM Z - zipl
Use zipl to prepare a boot device with a Linux program loader or to prepare a dump device.
Booting Linux
The options and requirements you have for booting Linux depend on your platform, LPAR, z/VM®, or KVM, and on your boot medium.
Shutdown actions
Several triggers can cause Linux to shut down. For each shutdown trigger, you can configure a specific shutdown action to be taken as a response.
The diag288 watchdog device driver
The diag288 watchdog device driver provides Linux watchdog applications with access to the watchdog timer on IBM Z®.
KASLR support
With kernel address space layout randomization (KASLR), the kernel is loaded to a random location in memory.

Parent topic: Device Drivers, Features, and Commands - Linux kernel 6.18