From 9d6235e1092e57bee39fd5574398dd7184b9f6ed Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Sat, 17 Dec 2022 10:45:55 +0100
Subject: [PATCH] CPU: Add a pause() method

---
 kernel/src/arch/CPU.h          | 2 ++
 kernel/src/arch/x86_64/CPU.cpp | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/kernel/src/arch/CPU.h b/kernel/src/arch/CPU.h
index edf51cba..1701057f 100644
--- a/kernel/src/arch/CPU.h
+++ b/kernel/src/arch/CPU.h
@@ -25,4 +25,6 @@ namespace CPU
     void print_stack_trace();
     void get_stack_trace_at(Registers* regs, void (*callback)(u64, void*), void* arg);
     void print_stack_trace_at(Registers* regs);
+
+    void pause();
 }
\ No newline at end of file
diff --git a/kernel/src/arch/x86_64/CPU.cpp b/kernel/src/arch/x86_64/CPU.cpp
index 11043411..dd63b84d 100644
--- a/kernel/src/arch/x86_64/CPU.cpp
+++ b/kernel/src/arch/x86_64/CPU.cpp
@@ -506,6 +506,11 @@ namespace CPU
             },
             &frame_index);
     }
+
+    void pause()
+    {
+        asm volatile("pause");
+    }
 }
 
 // called by kernel_yield