HelenOS sources

VECTOR_DEBUG_IPI   84 kernel/arch/amd64/include/arch/interrupt.h #define VECTOR_DEBUG_IPI          (IVT_FREEBASE + 2)
VECTOR_DEBUG_IPI   88 kernel/arch/ia32/include/arch/interrupt.h #define VECTOR_DEBUG_IPI          (IVT_FREEBASE + 2)
HelenOS homepage, sources at GitHub