--- qemu/linux-headers/asm-x86/hyperv.h	2018/04/24 18:56:55	1.1
+++ qemu/linux-headers/asm-x86/hyperv.h	2018/04/24 19:35:26	1.1.1.2
@@ -189,5 +189,6 @@
 #define HV_STATUS_INVALID_HYPERCALL_CODE	2
 #define HV_STATUS_INVALID_HYPERCALL_INPUT	3
 #define HV_STATUS_INVALID_ALIGNMENT		4
+#define HV_STATUS_INSUFFICIENT_BUFFERS		19
 
 #endif