Cui, Dexuan
2008-Dec-30 09:02 UTC
[Xen-devel] [PATCH] vtd: avoid redundant context mapping
After changeset 18934 (VT-d: Fix PCI-X device assignment), my assigned PCI E1000 NIC doesn''t work in guest. The NIC is 03:00.0. Its parent bridge is: 00:1e.0. In domain_context_mapping(): case DEV_TYPE_PCI: After we domain_context_mapping_one() 03:00.0 and 00:1e.0, the ''secbus'' is 3 and ''bus'' is 0, so we domain_context_mapping_one() 03:00.0 again -- this redundant invocation returns -EINVAL because we have created the mapping but haven''t changed pdev->domain from Dom0 to a new domain at this time and eventually the XEN_DOMCTL_assign_device hypercall returns a failure. The attached patch detects this case and avoids the redundant invocation. Signed-off-by: Dexuan Cui <dexuan.cui@intel.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel