passthrough: always read default pci passthrough settings

If there are no devices assigned to the domain at boot, we don't read
the default pci passthrough parameters.  This patch fixes it.  Reading
num_devs is completely useless hence I am removing it.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>

diff --git a/xenstore.c b/xenstore.c
index d364a5e2674e8d04c38aa3e76cc06b56d8651c96..eed495553d6cd2282ecbac86707744d1bb80af2e 100644 (file)
--- a/xenstore.c
+++ b/xenstore.c
@@ -731,18 +731,7 @@ void xenstore_parse_domain_config(int hvm_domid)
      * hvm_domid is always equal to domid */
     hvm_domid = domid;
 
-    /* get the pci pass-through parameter */
-    if (pasprintf(&buf, "/local/domain/0/backend/pci/%u/%u/num_devs",
-                  hvm_domid, pci_devid) == -1)
-        goto out;
-
-    free(params);
-    params = xs_read(xsh, XBT_NULL, buf, &len);
-    if (params == NULL)
-        goto out;
-    num = atoi(params);
-
-    /* get the pci pass-through parameter */
+    /* get the pci pass-through parameters */
     if (pasprintf(&buf, "/local/domain/0/backend/pci/%u/%u/msitranslate",
                   hvm_domid, pci_devid) != -1)
     {