• Chris Wright's avatar
    PCI: pci-stub module to reserve pci device · c70e0d9d
    Chris Wright authored
    When doing device assignment with KVM there's currently nothing to
    protect the device from having a driver in the host as well as the guest.
    This trivial module just binds the pci device on the host to a stub
    driver so that a real host driver can't bind to the device.  It has no
    pci id table, it supports only dynamic ids.
     # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id
     # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind
     # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind
     # ls -l /sys/bus/pci/devices/0000:00:19.0/driver
     lrwxrwxrwx 1 root root 0 2008-11-25 19:10 /sys/bus/pci/devices/0000:00:19.0/driver -> ../../../bus/pci/drivers/pci-stub
    Cc: "Kay, Allen M" <allen.m.kay@intel.com>
    Cc: "Nakajima, Jun" <jun.nakajima@intel.com>
    Signed-off-by: default avatarChris Wright <chrisw@sous-sol.org>
    Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>