[Xen-devel] [PATCH] libxl: Don't insert PCI device into xenstore for HVM guests

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

When doing passthrough of a PCI device for an HVM guest, don't insert
the device into xenstore, otherwise pciback attempts to use it which
conflicts with QEMU.

This manifests itself such that the first time a device is passed to a
domain, it succeeds. Subsequent attempts fail unless the device is
unbound from pciback or the machine rebooted.

Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
---
 tools/libxl/libxl_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
index e0743f8..2552889 100644
--- a/tools/libxl/libxl_pci.c
+++ b/tools/libxl/libxl_pci.c
@@ -994,7 +994,7 @@ out:
         }
     }
 
-    if (!starting)
+    if (!starting && type == LIBXL_DOMAIN_TYPE_PV)
         rc = libxl__device_pci_add_xenstore(gc, domid, pcidev, starting);
     else
         rc = 0;
-- 
2.1.0


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