new file mode 100644
@@ -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
new file mode 100644
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __UM_NOMMU_UAPI_HOST_OPS_H
+#define __UM_NOMMU_UAPI_HOST_OPS_H
+
+/* Defined in {posix,nt}-host.c */
+struct lkl_mutex;
+struct lkl_sem;
+typedef unsigned long lkl_thread_t;
+struct lkl_jmp_buf {
+ unsigned long buf[128];
+};
+
+/**
+ * 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 {
+};
+
+void lkl_bug(const char *fmt, ...);
+
+#endif
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@gmail.com> --- arch/um/include/asm/host_ops.h | 9 ++++++++ arch/um/nommu/include/uapi/asm/host_ops.h | 25 +++++++++++++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 arch/um/include/asm/host_ops.h create mode 100644 arch/um/nommu/include/uapi/asm/host_ops.h