x86 hvm cpuid: fix some problem with the hvm's cpuid configuration.

- When we overwrite a cpuid's input, apply the default policy
    for the other registers.
  - For the python binding, get unsigned long instead long.
  - Fix the multiple inputs cpuid's configuration parsing.

Signed-off-by: Jean Guyader <jean.guyader@eu.citrix.com>

tools/python/xen/lowlevel/xc/xc.c

@@ -696,7 +696,7 @@ static PyObject *pyxc_dom_set_cpuid(XcObject *self,
     unsigned int input[2];
     char *regs[4], *regs_transform[4];
 
-    if ( !PyArg_ParseTuple(args, "iiOO", &domid,
+    if ( !PyArg_ParseTuple(args, "IIOO", &domid,
                            &input[0], &sub_input, &config) )
         return NULL;
 

tools/python/xen/xm/create.py

@@ -856,7 +856,9 @@ def preprocess_cpuid(vals, attr_name):
     if not vals.cpuid: return
     cpuid = {} 
     for cpuid_input in getattr(vals, attr_name):
-        cpuid_match = re.match(r"(?P<input>(0x)?[0-9A-Fa-f]+):(?P<regs>.*)", cpuid_input)
+        input_re = "(0x)?[0-9A-Fa-f]+(,(0x)?[0-9A-Fa-f]+)?"
+        cpuid_match = re.match(r'(?P<input>%s):(?P<regs>.*)' % \
+                               input_re, cpuid_input)
         if cpuid_match != None:
             res_cpuid = cpuid_match.groupdict()
             input = res_cpuid['input']