From cba4091589019b25d978f317b9ecd8a8f5e4c739 Mon Sep 17 00:00:00 2001
From: Antoine Viallon <antoine@lesviallon.fr>
Date: Tue, 31 Oct 2023 14:49:36 +0100
Subject: [PATCH] [General] add cpu options to specify informations about cache
 sizes, etc.

---
 general.nix | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/general.nix b/general.nix
index 6647cc6..d564757 100644
--- a/general.nix
+++ b/general.nix
@@ -56,6 +56,33 @@ in
         type = types.str;
       };
       
+      caches = {
+        l1d = mkOption {
+          default = null;
+          example = 64;
+          description = "CPU L1 (data) cache size in kB";
+          type = with types; nullOr ints.positive;
+        };
+        l1i = mkOption {
+          default = null;
+          example = 64;
+          description = "CPU L1 (instruction) cache size in kB";
+          type = with types; nullOr ints.positive;
+        };
+        lastLevel = mkOption {
+          default = null;
+          example = 1024;
+          description = "Last-level (typ. L3) CPU cache size in kB";
+          type = with types; nullOr ints.positive;
+        };
+        cacheLine = mkOption {
+          default = null;
+          example = 64;
+          description = lib.mdDoc "Cache-line size in bytes (can be retrieved using `/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size`)";
+          type = with types; nullOr ints.positive;
+        };
+      };
+      
       x86 = {
         level = mkOption {
           default = 1;