[RFC v8 07/20] um: lkl: host interface

[Hajime Tazaki]

This patch introduces the host operations that define the interface
between the LKL and the host. These operations must be provided either
by a host library or by the application itself.

Signed-off-by: Hajime Tazaki <thehajime at gmail.com>
---
 arch/um/include/asm/host_ops.h          |  9 +++++++++
 arch/um/lkl/include/uapi/asm/host_ops.h | 23 +++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 arch/um/include/asm/host_ops.h
 create mode 100644 arch/um/lkl/include/uapi/asm/host_ops.h

diff --git a/arch/um/include/asm/host_ops.h b/arch/um/include/asm/host_ops.h
new file mode 100644
index 000000000000..f52423cc4ced
--- /dev/null
+++ b/arch/um/include/asm/host_ops.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_LKL_HOST_OPS_H
+#define _ASM_LKL_HOST_OPS_H
+
+#include <uapi/asm/host_ops.h>
+
+extern struct lkl_host_operations *lkl_ops;
+
+#endif
diff --git a/arch/um/lkl/include/uapi/asm/host_ops.h b/arch/um/lkl/include/uapi/asm/host_ops.h
new file mode 100644
index 000000000000..5d141784541d
--- /dev/null
+++ b/arch/um/lkl/include/uapi/asm/host_ops.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __UM_LIBMODE_UAPI_HOST_OPS_H
+#define __UM_LIBMODE_UAPI_HOST_OPS_H
+
+/**
+ * struct lkl_host_operations - host operations used by the Linux kernel
+ *
+ * These operations must be provided by a host library or by the application
+ * itself.
+ *
+ */
+struct lkl_host_operations {
+};
+
+/**
+ * lkl_bug - call lkl_panic with a message
+ *
+ * @fmt: message format with parameters
+ *
+ */
+void lkl_bug(const char *fmt, ...);
+
+#endif
-- 
2.21.0 (Apple Git-122.2)