From: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx>
Add new file bug.h to support PKVM_ASSERT.
If CONFIG_PKVM_INTEL_DEBUG enabled, print out assertion information then
call into Linux BUG(), otherwise just do a dead loop.
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx>
Signed-off-by: Jason Chen CJ <jason.cj.chen@xxxxxxxxx>
---
arch/x86/kvm/vmx/pkvm/hyp/bug.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/arch/x86/kvm/vmx/pkvm/hyp/bug.h b/arch/x86/kvm/vmx/pkvm/hyp/bug.h
new file mode 100644
index 000000000000..ca333708cc98
--- /dev/null
+++ b/arch/x86/kvm/vmx/pkvm/hyp/bug.h
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 Intel Corporation
+ */
+#ifndef __PKVM_BUG_H
+#define __PKVM_BUG_H
+
+#ifdef CONFIG_PKVM_INTEL_DEBUG
+#include <linux/printk.h>
+
+#define PKVM_ASSERT(c) \
+do { \
+ if (!(c)) { \
+ pr_err("assertion failed %s: %d: %s\n", \
+ __FILE__, __LINE__, #c); \
+ BUG(); \
+ } \
+} while (0)
+#else
+#define PKVM_ASSERT(c) do { } while (!(c))
+#endif
+
+#endif
--
2.25.1
