diff --git a/proxyclient/m1n1/proxy.py b/proxyclient/m1n1/proxy.py
index 1869f3e5..129a21cd 100644
--- a/proxyclient/m1n1/proxy.py
+++ b/proxyclient/m1n1/proxy.py
@@ -548,6 +548,7 @@ class M1N1Proxy(Reloadable):
     P_SMP_CALL_SYNC = 0x502
     P_SMP_WAIT = 0x503
     P_SMP_SET_WFE_MODE = 0x504
+    P_SMP_IS_ALIVE = 0x505
 
     P_HEAPBLOCK_ALLOC = 0x600
     P_MALLOC = 0x601
@@ -940,6 +941,8 @@ class M1N1Proxy(Reloadable):
         return self.request(self.P_SMP_WAIT, cpu)
     def smp_set_wfe_mode(self, mode):
         return self.request(self.P_SMP_SET_WFE_MODE, mode)
+    def smp_is_alive(self, cpu):
+        return self.request(self.P_SMP_IS_ALIVE, cpu)
 
     def heapblock_alloc(self, size):
         return self.request(self.P_HEAPBLOCK_ALLOC, size)
diff --git a/src/proxy.c b/src/proxy.c
index 3925d7e8..0587f6ab 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -339,6 +339,9 @@ int proxy_process(ProxyRequest *request, ProxyReply *reply)
         case P_SMP_SET_WFE_MODE:
             smp_set_wfe_mode(request->args[0]);
             break;
+        case P_SMP_IS_ALIVE:
+            reply->retval = smp_is_alive(request->args[0]);
+            break;
 
         case P_HEAPBLOCK_ALLOC:
             reply->retval = (u64)heapblock_alloc(request->args[0]);
diff --git a/src/proxy.h b/src/proxy.h
index 27a3f8ea..a6612824 100644
--- a/src/proxy.h
+++ b/src/proxy.h
@@ -83,6 +83,7 @@ typedef enum {
     P_SMP_CALL_SYNC,
     P_SMP_WAIT,
     P_SMP_SET_WFE_MODE,
+    P_SMP_IS_ALIVE,
 
     P_HEAPBLOCK_ALLOC = 0x600, // Heap and memory management ops
     P_MALLOC,