Activating site-specific kernel parameters

6.18 LPAR mode z/VM guest KVM guest

Use loadparm to activate site-specific kernel parameters.

About this task

You can specify loadparm either with the chreipl command, or using the z/VM IPL command.

Procedure

Specify the loadparm parameter -L when using chreipl.
For example, to set up a reboot to use DASD 0.0.1000, and kernel parameters for site 2, issue:
```
# chreipl ccw 0.0.1000 -L "S2"
Re-IPL type: ccw
Device: 0.0.1000
Loadparm: "S2"
Bootparms: ""
clear: 0
```
Specify the loadparm value with a capital S. For more information about the chreipl command, see chreipl - Modify the re-IPL configuration.
Specify the loadparm parameter when using the z/VM IPL command.
For example, to boot your Linux image under z/VM using DASD 0.0.384c, boot menu 1, and kernel parameters from site 2, on the z/VM console issue:
```
#cp i 384c loadparm 1S2
```
For KVM guests, you can specify the loadparm parameter through the disks <boot> element, for example, <boot order="1" loadparm="1S2"/>.