opal/patch: add call to check if binary patching is supported

Signed-off-by: Nathan Hjelm <[email protected]>

Author: hjelmn

opal/mca/memory/patcher/memory_patcher_component.c

@@ -241,7 +241,11 @@ static int patcher_register (void)
 
 static int patcher_query (int *priority)
 {
-    *priority = mca_memory_patcher_priority;
+    if (opal_patch_supported ()) {
+        *priority = mca_memory_patcher_priority;
+    } else {
+        *priority = -1;
+    }
     return OPAL_SUCCESS;
 }
 

opal/util/opal_patcher.c

@@ -195,6 +195,11 @@ int opal_patch_symbol (const char *func_symbol_name, uintptr_t func_new_addr)
     return OPAL_SUCCESS;
 }
 
+bool opal_patch_supported (void)
+{
+    return true;
+}
+
 /* end of #if defined(__i386__) || defined(__x86_64__) || defined(__ia64__) */
 // ------------------------------------------------- PPC equivalent:
 #elif OPAL_ENABLE_DLOPEN_SUPPORT && defined(__PPC__)
@@ -338,10 +343,20 @@ int opal_patch_symbol (const char *sys_func, uintptr_t hook_addr)
     return OPAL_SUCCESS;
 }
 
+bool opal_patch_supported (void)
+{
+    return true;
+}
 #else
 
-int opal_patch_symbol (const char *sys_func, uintptr_t hook_addr) {
+int opal_patch_symbol (const char *sys_func, uintptr_t hook_addr)
+{
     return OPAL_ERR_NOT_SUPPORTED;
 }
 
+bool opal_patch_supported (void)
+{
+    return false;
+}
+
 #endif

opal/util/opal_patcher.h

@@ -53,5 +53,9 @@
  */
 int opal_patch_symbol (const char *func_symbol_name, uintptr_t func_new_addr);
 
+/**
+ * Check if symbol patching is available
+ */
+bool opal_patch_supported (void);
 
 #endif /* !defined(OPAL_PATCHER_H) */