https://access.redhat.com/documentation/ja-JP/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/chap-Virtualization_Host_Configuration_and_Guest_Installation_Guide-PCI_Device_Config.html#sect-Virtualization_Host_Configuration_and_Guest_Installation_Guide-PCI_Assignment-AI_device_to_a_host
を見ると
# vi /var/log/dmesg
[ 4.871293] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUG disabled
[ 4.871299] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[ 4.871304] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
[ 4.871307] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE disabled
[ 4.871311] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_P2P disabled
[ 4.871315] iwlwifi 0000:02:00.0: Detected Intel(R) Centrino(R) Advanced-N 6235 AGN, REV=0xB0
[ 4.871353] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
# lspci | grep Centrino
02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)
# virsh nodedev-list –cap pci
pci_0000_00_00_0
pci_0000_00_02_0
pci_0000_00_16_0
pci_0000_00_19_0
pci_0000_00_1a_0
pci_0000_00_1b_0
pci_0000_00_1c_0
pci_0000_00_1c_2
pci_0000_00_1d_0
pci_0000_00_1f_0
pci_0000_00_1f_2
pci_0000_00_1f_3
pci_0000_02_00_0
# virsh nodedev-dumpxml pci_0000_02_00_0
<device>
<name>pci_0000_02_00_0</name>
<path>/sys/devices/pci0000:00/0000:00:1c.2/0000:02:00.0</path>
<parent>pci_0000_00_1c_2</parent>
<driver>
<name>iwlwifi</name>
</driver>
<capability type=’pci’>
<domain>0</domain>
<bus>2</bus>
<slot>0</slot>
<function>0</function>
<product id=’0x088e’>Centrino Advanced-N 6235</product>
<vendor id=’0x8086′>Intel Corporation</vendor>
</capability>
</device>
# virsh edit Android4.4
<controller type=’virtio-serial’ index=’0′>
<address type=’pci‘ domain=’0x0000‘ bus=’0x02‘ slot=’0x00‘ function=’0x0‘/>
</controller>
がダメ。
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
</source>
</hostdev>
が
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</hostdev>
に書き換わったけど変更はできた。
# virsh start Android すると
エラー: ドメイン Android4.4 の起動に失敗しました
エラー: サポートされない設定: host doesn’t support passthrough of host PCI devices
それどころかホストがらの切り離しにも失敗。
# virsh nodedev-dettach pci_0000_02_00_0
エラー: デバイス pci_0000_02_00_0 の切断に失敗しました
エラー: この操作はサポートされていません: neither VFIO nor KVM device assignment is currently supported on this system