[Xen-devel] [PATCH] VT-d: only scan secondary functions on multi-function devices

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -445,6 +445,10 @@ int __init scan_pci_devices(void)
                         spin_unlock(&pcidevs_lock);
                         return -EINVAL;
                 }
+
+                if ( !func && !(pci_conf_read8(bus, dev, func,
+                                               PCI_HEADER_TYPE) & 0x80) )
+                    break;
             }
         }
     }

Attachment: pci-scan-single-func.patch
Description: Text document

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