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BZ# https://bugzilla.redhat.com/show_bug.cgi?id=736214 The problem is caused by the original info of domain's PCI dev is maintained by qemu_driver->activePciHostdevs list, (E.g. dev->reprobe, which stands for whether need to reprobe driver for the dev when do reattachment). The fields (dev->reprobe, dev->unbind_from_stub, and dev->remove_slot) are initialized properly when preparing the PCI device for managed attachment. However, when do reattachment, it construct a complete new "pciDevice" without honoring the original dev info, and thus the dev won't get the original driver or can get other problem. This patch is to fix the problem by get the devs from list driver->activePciHostdevs. Tested with following 3 scenarios: * the PCI was bound to some driver not pci-stub before attaching result: the device will be bound to the original driver * the PCI was bound to pci-stub before attaching result: no driver reprobing, and still bound to pci-stub * The PCI was not bound to any driver result: no driver reprobing, and still not bound to any driver.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>