[PATCH] Fix bug in superpage flag handling

[PATCH] Fix bug in superpage flag handling

[Dave McCracken]

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During testing I discovered that using a bootloader magically clears the 
superpage flag out of the config.  This small patch fixes that behavior.

Dave McCracken
Oracle Corp.

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--- xen-unstable/tools/python/xen/xend/XendConfig.py	2009-10-07 15:43:51.000000000 -0500
+++ xen-hpage/tools/python/xen/xend/XendConfig.py	2009-10-07 15:47:21.000000000 -0500
@@ -2017,7 +2017,9 @@ class XendConfig(dict):
             self['use_tmp_kernel'] = False
             self['use_tmp_ramdisk'] = False
 
-        self['superpages'] = sxp.child_value(image_sxp, 'superpages',0)
+        val = sxp.child_value(image_sxp, 'superpages')
+        if val is not None:
+            self['superpages'] = val
 
         for key in XENAPI_PLATFORM_CFG_TYPES.keys():
             val = sxp.child_value(image_sxp, key, None)

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