tunneling: Add userspace support for new GRE implementation.

[openvswitch] / lib / backtrace.c

diff --git a/lib/backtrace.c b/lib/backtrace.c
index 42ab8c48b70b59524c054530385f14c060b75cf7..80cae54a6a15310643631fae55718bbb623a2424 100644 (file)
--- a/lib/backtrace.c
+++ b/lib/backtrace.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@
 #define THIS_MODULE VLM_backtrace
 #include "vlog.h"
 
-static uintptr_t UNUSED
+static uintptr_t OVS_UNUSED
 get_max_stack(void)
 {
     static const char file_name[] = "/proc/self/maps";
@@ -73,6 +73,10 @@ stack_low(void)
     uintptr_t low;
     asm("movl %%esp,%0" : "=g" (low));
     return low;
+#elif __x86_64__
+    uintptr_t low;
+    asm("movq %%rsp,%0" : "=g" (low));
+    return low;
 #else
     /* This causes a warning in GCC that cannot be disabled, so use it only on
      * non-x86. */