--- zzzz-none-000/linux-4.9.279/arch/x86/include/asm/irq_vectors.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/arch/x86/include/asm/irq_vectors.h	2023-02-08 11:43:42.000000000 +0000
@@ -33,11 +33,6 @@
  * (0x80 is the syscall vector, 0x30-0x3f are for ISA)
  */
 #define FIRST_EXTERNAL_VECTOR		0x20
-/*
- * We start allocating at 0x21 to spread out vectors evenly between
- * priority levels. (0x80 is the syscall vector)
- */
-#define VECTOR_OFFSET_START		1
 
 /*
  * Reserve the lowest usable vector (and hence lowest priority)  0x20 for