From 5f35189a51ebc54298ea2cb0e4d53afe4e4e75eb Mon Sep 17 00:00:00 2001
From: Ruize Tang <1466040111@qq.com>
Date: Thu, 21 Nov 2024 19:14:52 +0800
Subject: [PATCH] Add compile flags to disable the red zone optimization

---
 osdk/src/commands/build/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/osdk/src/commands/build/mod.rs b/osdk/src/commands/build/mod.rs
index 7f680b214..2a3176be0 100644
--- a/osdk/src/commands/build/mod.rs
+++ b/osdk/src/commands/build/mod.rs
@@ -213,6 +213,11 @@ fn build_kernel_elf(
         // This is to let rustc know that "cfg(ktest)" is our well-known configuration.
         // See the [Rust Blog](https://blog.rust-lang.org/2024/05/06/check-cfg.html) for details.
         "--check-cfg cfg(ktest)",
+        // The red zone is a small area below the stack pointer for optimization, primarily in
+        // user-space applications. This optimization can be problematic in the kernel, as the CPU
+        // or exception handlers may overwrite kernel data in the red zone. Therefore, we disable
+        // this optimization.
+        "-C no-redzone=y",
     ]);
 
     if matches!(arch, Arch::X86_64) {