diff --git a/cpu-all.h b/cpu-all.h
index dd9c23054..bc0dad871 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -837,6 +837,14 @@ extern CPUState *cpu_single_env;
 #define CPU_INTERRUPT_SIPI        CPU_INTERRUPT_TGT_INT_2
 #define CPU_INTERRUPT_MCE         CPU_INTERRUPT_TGT_EXT_4
 
+/* The set of all bits that should be masked when single-stepping.  */
+#define CPU_INTERRUPT_SSTEP_MASK \
+    (CPU_INTERRUPT_HARD          \
+     | CPU_INTERRUPT_TGT_EXT_0   \
+     | CPU_INTERRUPT_TGT_EXT_1   \
+     | CPU_INTERRUPT_TGT_EXT_2   \
+     | CPU_INTERRUPT_TGT_EXT_3   \
+     | CPU_INTERRUPT_TGT_EXT_4)
 
 #ifndef CONFIG_USER_ONLY
 typedef void (*CPUInterruptHandler)(CPUState *, int);
diff --git a/cpu-exec.c b/cpu-exec.c
index 395cd8cf9..5b42b2581 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -360,10 +360,7 @@ int cpu_exec(CPUState *env1)
                 if (unlikely(interrupt_request)) {
                     if (unlikely(env->singlestep_enabled & SSTEP_NOIRQ)) {
                         /* Mask out external interrupts for this step. */
-                        interrupt_request &= ~(CPU_INTERRUPT_HARD |
-                                               CPU_INTERRUPT_FIQ |
-                                               CPU_INTERRUPT_SMI |
-                                               CPU_INTERRUPT_NMI);
+                        interrupt_request &= ~CPU_INTERRUPT_SSTEP_MASK;
                     }
                     if (interrupt_request & CPU_INTERRUPT_DEBUG) {
                         env->interrupt_request &= ~CPU_INTERRUPT_DEBUG;