https://bugzilla.kernel.org/show_bug.cgi?id=42636
Summary: PCI passthrough does not work with AMD iommu for PCI
device
Product: Virtualization
Version: unspecified
Kernel Version: 3.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
I want to passthrough this PCI deivce to a kvm guest:
05:07.0 Network controller: RaLink RT2800 802.11n PCI
Subsystem: Linksys Device 0067
Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 21
Region 0: Memory at fdae0000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Unfortunately, I'm always getting an error during virsh start guest:
Failed to assign device "hostdev0" : Device or resource busy.
qemu-kvm: -device
pci-assign,host=05:06.0,id=hostdev0,configfd=20,bus=pci.0,addr=0x4: Device
'pci-assign' could not be initialized.
If I'm adding this device (05:06.0) to the guest, too, I'm getting the exactly
same error again. Of course, I unloaded the module of this additional device
before trying to passthrough it to the guest.
lspci -vvs 05:06.0
05:06.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100
(rev 0c)
Subsystem: Intel Corporation EtherExpress PRO/100 S Desktop Adapter
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (2000ns min, 14000ns max), Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 20
Region 0: Memory at fdaff000 (32-bit, non-prefetchable) [size=4K]
Region 1: I/O ports at af00 [size=64]
Region 2: Memory at fdaa0000 (32-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at fd900000 [disabled] [size=64K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME-
lspci -vt
-[0000:00]-+-00.0 ATI Technologies Inc RD890 PCI to PCI bridge (external gfx0
port B)
+-00.2 ATI Technologies Inc Device 5a23
+-02.0-[01]--+-00.0 ATI Technologies Inc NI Turks [AMD Radeon HD
6500]
| \-00.1 ATI Technologies Inc Device aa90
+-04.0-[02]----00.0 Device 1b6f:7023
+-09.0-[03]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/8168B
PCI Express Gigabit Ethernet controller
+-0a.0-[04]----00.0 Device 1b6f:7023
+-11.0 ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode]
+-12.0 ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
+-12.2 ATI Technologies Inc SB700/SB800 USB EHCI Controller
+-13.0 ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
+-13.2 ATI Technologies Inc SB700/SB800 USB EHCI Controller
+-14.0 ATI Technologies Inc SBx00 SMBus Controller
+-14.1 ATI Technologies Inc SB700/SB800 IDE Controller
+-14.2 ATI Technologies Inc SBx00 Azalia (Intel HDA)
+-14.3 ATI Technologies Inc SB700/SB800 LPC host controller
+-14.4-[05]--+-06.0 Intel Corporation 82557/8/9/0/1 Ethernet Pro
100
| \-07.0 RaLink RT2800 802.11n PCI
+-14.5 ATI Technologies Inc SB700/SB800 USB OHCI2 Controller
+-15.0-[06]--
+-16.0 ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
+-16.2 ATI Technologies Inc SB700/SB800 USB EHCI Controller
+-18.0 Advanced Micro Devices [AMD] Device 1600
+-18.1 Advanced Micro Devices [AMD] Device 1601
+-18.2 Advanced Micro Devices [AMD] Device 1602
+-18.3 Advanced Micro Devices [AMD] Device 1603
+-18.4 Advanced Micro Devices [AMD] Device 1604
\-18.5 Advanced Micro Devices [AMD] Device 1605
dmesg | grep AMD-Vi
[ 0.610182] AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: 3e info 1300
[ 0.610184] AMD-Vi: mmio-addr: 00000000fec30000
[ 0.610359] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:00.0 flags: 00
[ 0.610360] AMD-Vi: DEV_RANGE_END devid: 00:00.2
[ 0.610362] AMD-Vi: DEV_SELECT devid: 00:02.0 flags:
00
[ 0.610363] AMD-Vi: DEV_SELECT_RANGE_START devid: 01:00.0 flags: 00
[ 0.610364] AMD-Vi: DEV_RANGE_END devid: 01:00.1
[ 0.610366] AMD-Vi: DEV_SELECT devid: 00:04.0 flags:
00
[ 0.610367] AMD-Vi: DEV_SELECT devid: 02:00.0 flags:
00
[ 0.610368] AMD-Vi: DEV_SELECT devid: 00:09.0 flags:
00
[ 0.610369] AMD-Vi: DEV_SELECT devid: 03:00.0 flags:
00
[ 0.610370] AMD-Vi: DEV_SELECT devid: 00:0a.0 flags:
00
[ 0.610371] AMD-Vi: DEV_SELECT devid: 04:00.0 flags:
00
[ 0.610372] AMD-Vi: DEV_SELECT devid: 00:11.0 flags:
00
[ 0.610373] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:12.0 flags: 00
[ 0.610374] AMD-Vi: DEV_RANGE_END devid: 00:12.2
[ 0.610376] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:13.0 flags: 00
[ 0.610377] AMD-Vi: DEV_RANGE_END devid: 00:13.2
[ 0.610378] AMD-Vi: DEV_SELECT devid: 00:14.0 flags:
d7
[ 0.610379] AMD-Vi: DEV_SELECT devid: 00:14.1 flags:
00
[ 0.610380] AMD-Vi: DEV_SELECT devid: 00:14.2 flags:
00
[ 0.610381] AMD-Vi: DEV_SELECT devid: 00:14.3 flags:
00
[ 0.610382] AMD-Vi: DEV_SELECT devid: 00:14.4 flags:
00
[ 0.610384] AMD-Vi: DEV_ALIAS_RANGE devid: 05:00.0 flags:
00 devid_to: 00:14.4
[ 0.610385] AMD-Vi: DEV_RANGE_END devid: 05:1f.7
[ 0.610391] AMD-Vi: DEV_SELECT devid: 00:14.5 flags:
00
[ 0.610392] AMD-Vi: DEV_SELECT devid: 00:15.0 flags:
00
[ 0.610393] AMD-Vi: DEV_SELECT_RANGE_START devid: 06:00.0 flags: 00
[ 0.610394] AMD-Vi: DEV_RANGE_END devid: 06:1f.7
[ 0.610398] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:16.0 flags: 00
[ 0.610399] AMD-Vi: DEV_RANGE_END devid: 00:16.2
[ 0.610531] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40
[ 0.669479] AMD-Vi: Lazy IO/TLB flushing enabled
kernel is 3.1
kvm is 1.0
board is GA-990XA-UD3
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