[Xen-devel] [patch 4/4 v2] ioemu: Read pass-through vslot from xend

[horms@xxxxxxxxxxxx]

This reads the vslot information supplied by xend, and should be
the final piece for this feature on the ioemu side.

There is also a xend portion of this patch which I will post separately.

Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>


Index: ioemu-remote/xenstore.c
===================================================================
--- ioemu-remote.orig/xenstore.c        2009-03-24 09:25:36.000000000 +1100
+++ ioemu-remote/xenstore.c     2009-03-24 22:58:28.000000000 +1100
@@ -582,6 +582,24 @@ void xenstore_parse_domain_config(int hv
 
             strcat(direct_pci_str, dev);
 
+            if (pasprintf(&buf, "/local/domain/0/backend/pci/%u/%u/vslot-%d",
+                          hvm_domid, pci_devid, i) != -1) {
+                free(dev);
+                dev = xs_read(xsh, XBT_NULL, buf, &len);
+            }
+            if ( dev ) {
+                if (strlen(dev) + strlen(direct_pci_str) >
+                    DIRECT_PCI_STR_LEN - 2) {
+                    fprintf(stderr, "qemu: too many pci pass-through "
+                            "devices\n");
+                    memset(direct_pci_str, 0, DIRECT_PCI_STR_LEN);
+                    goto out;
+                }
+                strcat(direct_pci_str, "@");
+                strcat(direct_pci_str, dev);
+            }
+
+
             if (pasprintf(&buf, "/local/domain/0/backend/pci/%u/%u/opts-%d",
                           hvm_domid, pci_devid, i) != -1) {
                 free(dev);

-- 

-- 
Simon Horman
  VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
  H: www.vergenet.net/~horms/             W: www.valinux.co.jp/en


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