From d6126501babd9782be4248b2840da493241c30d3 Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
Date: Tue, 16 Sep 2025 15:53:28 +0200
Subject: [PATCH] Disable NMI watchdog in fox
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Reviewed-by: Aleix Boné <abonerib@bsc.es>
---
 m/fox/configuration.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/m/fox/configuration.nix b/m/fox/configuration.nix
index 85af5181..cce4fbe8 100644
--- a/m/fox/configuration.nix
+++ b/m/fox/configuration.nix
@@ -38,6 +38,9 @@
   # Expose kernel addresses
   boot.kernel.sysctl."kernel.kptr_restrict" = 0;
 
+  # Disable NMI watchdog to save one hw counter (for AMD uProf)
+  boot.kernel.sysctl."kernel.nmi_watchdog" = 0;
+
   services.openssh.settings.X11Forwarding = true;
 
   services.fail2ban.enable = true;