From 026efae8a81bb67f9c35c02b7d1d811bb00bcb8d Mon Sep 17 00:00:00 2001
From: James Mintram <me@jamesrm.com>
Date: Sat, 2 Apr 2022 23:45:04 +0100
Subject: [PATCH] Kernel: Add PAGE_MASK to an aarch64 CPU header

---
 Kernel/Arch/CPU.h         | 24 ++++++++++++++++++++++++
 Kernel/Arch/aarch64/CPU.h |  9 +++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 Kernel/Arch/CPU.h
 create mode 100644 Kernel/Arch/aarch64/CPU.h

diff --git a/Kernel/Arch/CPU.h b/Kernel/Arch/CPU.h
new file mode 100644
index 0000000000..43ba63583d
--- /dev/null
+++ b/Kernel/Arch/CPU.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2018-2022, James Mintram <me@jamesrm.com>
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Platform.h>
+
+#if ARCH(X86_64) || ARCH(I386)
+#    include <Kernel/Arch/x86/CPU.h>
+#elif ARCH(AARCH64)
+#    include <Kernel/Arch/aarch64/CPU.h>
+#else
+#    error "Unknown architecture"
+#endif
+
+namespace Kernel {
+
+struct RegisterState;
+
+}
diff --git a/Kernel/Arch/aarch64/CPU.h b/Kernel/Arch/aarch64/CPU.h
new file mode 100644
index 0000000000..7a59983909
--- /dev/null
+++ b/Kernel/Arch/aarch64/CPU.h
@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) 2018-2022, James Mintram <me@jamesrm.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#define PAGE_MASK (~(FlatPtr)0xfffu)