From c0a85cb870cd7ec3b629b4ca00029370ecf0b148 Mon Sep 17 00:00:00 2001
From: Robin Eklind <rnd0x00@gmail.com>
Date: Thu, 26 May 2022 00:12:01 +0200
Subject: [PATCH] boot/paging: assert that long mode active is set after
 enable_paging

---
 src/boot/paging_32.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/boot/paging_32.zig b/src/boot/paging_32.zig
index d195246..e86b736 100644
--- a/src/boot/paging_32.zig
+++ b/src/boot/paging_32.zig
@@ -178,4 +178,7 @@ export fn enable_paging() void {
     var cr0_value = zasm.Cr0.read();
     cr0_value.paging = true; // 1 << 31
     cr0_value.write();
+
+    // Assert that long mode is active.
+    std.debug.assert(zasm.Efer.read().long_mode_active);
 }