--- zzzz-none-000/linux-4.4.271/drivers/tty/sysrq.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/drivers/tty/sysrq.c	2023-04-19 10:22:29.000000000 +0000
@@ -485,6 +485,7 @@
 	/* x: May be registered on sparc64 for global PMU dump */
 	NULL,				/* x */
 	/* y: May be registered on sparc64 for global register dump */
+	/* y: May be registered for mini dump */
 	NULL,				/* y */
 	&sysrq_ftrace_dump_op,		/* z */
 };