From 92bb6ba02d2609bc2cb62fbfbe721f3adde74d3d Mon Sep 17 00:00:00 2001
From: Mark Nipper <nipsy@bitgnome.net>
Date: Thu, 24 Jul 2025 14:12:43 -0700
Subject: Disable the split lock penalty

---
 hosts/caladan/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'hosts/caladan')

diff --git a/hosts/caladan/default.nix b/hosts/caladan/default.nix
index ed3ef94..a2ae6bb 100644
--- a/hosts/caladan/default.nix
+++ b/hosts/caladan/default.nix
@@ -1,7 +1,10 @@
 { config, inputs, outputs, pkgs, ... }: {
   boot = {
     initrd.kernelModules = [ "amdgpu" "zfs" ];
-    kernel.sysctl."kernel.hostname" = "caladan.bitgnome.net";
+    kernel.sysctl = {
+      "kernel.hostname" = "caladan.bitgnome.net";
+      "kernel.split_lock_mitigate" = 0; # https://lwn.net/Articles/911219/
+    };
     kernelPackages = pkgs.master.linuxPackages_6_15;
     #kernelParams = [
     #  "amdgpu.ppfeaturemask=0xfffd3fff"
-- 
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