Setting up SUSE Linux Enterprise Server 15 SP5 as a KVM host
A KVM host has hardware and user space requirements.
Hardware
The real or virtual hardware must provide the Start Interpretive Execution (SIE) feature.
User space
You must install the packages for QEMU and libvirt.
Module parameters
Configure the KVM host support with module parameters.
- nested=
- If set to
1
, passes the SIE capability on to its guests. Thus, the guests can be hosts for higher-level guests.Nested hosts are intended for test environments and not for production systems.
- hpage=
- If set to
1
, supports guest-configurations with huge-page memory backing.Enough 1 MB huge pages must be set up to satisfy the needs of the guests. For details about setting up huge pages, see Huge-page support.
Nested hosts cannot back their guests with huge pages. You cannot set both
nested= and hpage= to 1.
Making parameter settings persistent across re-boots
To make a module parameter persistent, create a file called /etc/modprobe.d/kvm.conf with, for example, the following content:
options kvm hpage=1Unload and reload the kvm module to make the changes take effect.