docs: update virt/host/modules

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lukas 2023-02-08 18:42:58 +00:00
parent 0baf7b6950
commit 87b2149aaf

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@ -2,7 +2,7 @@
title: Kernel modules
description:
published: true
date: 2023-02-05T17:42:55.058Z
date: 2023-02-08T18:42:56.268Z
tags:
editor: markdown
dateCreated: 2021-11-13T11:58:03.276Z
@ -37,7 +37,7 @@ By default, Linux distributions do not generally enable IOMMU groups, a prerequi
* It should then look like this:
```
cat /etc/default/grub
$ cat /etc/default/grub
```
Then, one needs to regenerate GRUB.
@ -68,7 +68,9 @@ echo "options kvm_intel nested=1" >> /etc/modprobe.d/kvm.conf
echo "options kvm_amd nested=1" >> /etc/modprobe.d/kvm.conf
```
* Enabling VMCS shadowing may give a large performance boost on Haswell CPUs and later. Append that `enable_shadow_vmcs=1` to *kvm.conf*. It should look like that:
### VMCS Shadowing (Intel-only)
* Enabling VMCS shadowing may give [a performance boost](https://storpool.com/blog/nested-virtualization-with-kvm-and-opennebula) on Haswell CPUs and later. Append that `enable_shadow_vmcs=1` to *kvm.conf*. It should look like that:
```
cat /etc/modprobe.d/kvm.conf