From 4eb24f4f8e2e6f226cced6f3691d8e5a9f7de7ac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Mon, 7 Sep 2026 00:32:56 +0200
Subject: [PATCH] std.os.linux: add HWCAP constants for x86

---
 lib/std/os/linux.zig | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index e9abc71566618c49caab326225770ab02d5f298c..80cf271418f593870fd1913159838c78a7c1dc97 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -933,6 +933,12 @@ pub const HWCAP = switch (native_arch) {
         pub const CRYPTO = 1 << 26;
         pub const ADI = 1 << 27;
     },
+    .x86, .x86_64 => struct {
+        pub const @"2" = struct {
+            pub const RING3MWAIT = 1 << 0;
+            pub const FSGSBASE = 1 << 1;
+        };
+    },
     else => struct {},
 };
 
-- 
2.54.0