QemuServer: fix wrong binding of pci root ports, bridges or switches to vfio

Signed-off-by: Stefan Priebe <s.priebe@profihost.ag>

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 59441e19ab01cbcc9d0a52fee863cea02fa7f47a..5d7f9d718474ebd4a2f93f0f30363c85d4f8c04e 100644 (file)
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -4600,6 +4600,11 @@ sub pci_dev_group_bind_to_vfio {
 
     foreach my $pciid (@devs) {
        $pciid =~ m/^([:\.\da-f]+)$/ or die "PCI ID $pciid not valid!\n";
+
+        # pci bridges, switches or root ports are not supported
+        # they have a pci_bus subdirectory so skip them
+        next if (-e "$pcisysfs/devices/$pciid/pci_bus");
+
        my $info = pci_device_info($1);
        pci_dev_bind_to_vfio($info) || die "Cannot bind $pciid to vfio\n";
     }