1 files changed, 1 insertions, 0 deletions
diff --git a/pk/mcall.h b/pk/mcall.h
index 9992891..5d4b042 100644
--- a/pk/mcall.h
+++ b/pk/mcall.h
@@ -5,6 +5,7 @@
 #define MCALL_CONSOLE_PUTCHAR 1
 #define MCALL_SEND_DEVICE_REQUEST 2
 #define MCALL_RECEIVE_DEVICE_RESPONSE 3
+#define MCALL_SEND_IPI 4
 
 #ifndef __ASSEMBLER__