From 763960c0e611afb7f29181d83024893b1b4e5336 Mon Sep 17 00:00:00 2001
From: JuliusFreudenberger <julius+git@jfreudenberger.de>
Date: Sat, 13 Jun 2026 23:44:14 +0200
Subject: [PATCH] Enable KSM on busch

This hopefully reduces RAM usage when having multiple VMs with the same
OS.
---
 hosts/busch/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hosts/busch/default.nix b/hosts/busch/default.nix
index 3c55b48..62a43a9 100644
--- a/hosts/busch/default.nix
+++ b/hosts/busch/default.nix
@@ -87,6 +87,8 @@
     memoryPercent = 50;
   };
 
+  hardware.ksm.enable = true; # Linux kernel Same-Page Merging, useful when having multiple VMs with same OS
+
   networking.useDHCP = false;
 
   systemd.network = {