Hi,
I'm trying to pass a pcie-device into a kvm guest. qemu-kvm is started
by libvirt with this command:
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=none
/usr/bin/qemu-kvm -S -M pc-0.12 -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -name test
-uuid cefc7515-c0c2-27fc-8e7e-e0a65f9cb95b -nodefaults
-chardev socket,id=monitor,path=/var/lib/libvirt/qemu/test.monitor,server,nowait
-mon chardev=monitor,mode=readline -rtc base=utc -boot c
-drive file=/dev/vg_main/test,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0
-drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on
-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
-device virtio-net-pci,vlan=0,id=net0,mac=52:54:00:d0:84:c7,bus=pci.0,addr=0x7
-net tap,fd=59,vlan=0,name=hostnet0
-chardev pty,id=serial0
-device isa-serial,chardev=serial0 -usb -vnc 127.0.0.1:0 -k de
-vga cirrus -device pci-assign,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x8
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
It failes with:
Failed to assign irq for "hostdev0": Operation not permitted
Perhaps you are assigning a device that shares an IRQ with another device?
The irq of the device does not seem to be shared:
05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Subsystem: ASUSTeK Computer Inc. Device 8369
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at faee0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at cc00 [size=32]
Memory at faedc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [a0] MSI-X: Enable- Count=5 Masked-
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 90-e6-ba-ff-ff-7c-c6-ef
Kernel driver in use: pci-stub
Kernel modules: e1000e
when kvm is not running and the device used as eth0 on host:
# cat /proc/interrupts
[...]
17: 0 0 0 0 0 0 0 0 IO-APIC-fasteoi sata_sil24
23: 69 0 0 0 0 0 0 0 IO-APIC-fasteoi ehci_hcd:usb2
[...]
37: 2 0 0 0 0 0 0 0 PCI-MSI-edge eth0-rx-0
38: 4 0 0 0 0 0 0 0 PCI-MSI-edge eth0-tx-0
39: 1 0 0 0 0 0 0 0 PCI-MSI-edge eth0
[...]
qemu-kvm is running as root, selinux is running in permissive mode. So the rights shouldn't be
an issue too.
The processor is an Intel Core i7-860 on an Asus P7F-E board, chipset is an Intel 3420.
Bios is ver 0607, vt-d is enabled in bios setup.
This is logged in dmesg, so to me it seems like the system is indeed vt-d capable:
[...]
ACPI: Core revision 20091214
DMAR: Host address width 36
DMAR: DRHD base: 0x000000fed90000 flags: 0x1
IOMMU fed90000: ver 1:0 cap c90780106f0462 ecap f020e3
DMAR: RMRR base: 0x000000000e4000 end: 0x000000000e7fff
DMAR: RMRR base: 0x000000bf7ec000 end: 0x000000bf7fffff
DMAR: No ATSR found
Setting APIC routing to physical flat
..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
CPU0: Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz stepping 05
[...]
IOMMU 0xfed90000: using Queued invalidation
IOMMU: Setting RMRR:
IOMMU: Setting identity map for device 0000:00:1d.0 [0xbf7ec000 - 0xbf800000]
IOMMU: Setting identity map for device 0000:00:1a.0 [0xbf7ec000 - 0xbf800000]
IOMMU: Setting identity map for device 0000:00:1d.0 [0xe4000 - 0xe8000]
IOMMU: Setting identity map for device 0000:00:1a.0 [0xe4000 - 0xe8000]
IOMMU: Prepare 0-16MiB unity mapping for LPC
IOMMU: Setting identity map for device 0000:00:1f.0 [0x0 - 0x1000000]
alloc irq_desc for 29 on node 0
alloc kstat_irqs on node 0
PCI-DMA: Intel(R) Virtualization Technology for Directed I/O
Intel PCLMULQDQ-NI instructions are not detected.
[...]
Kernel is 2.6.33.3-85.fc13.x86_64. I tried qemu-0.12.3-8.fc13 as it came with
Fedora 13 beta and qemu-kvm-0.12.4, same results.
Any idea whats going wrong or what else I could try?
Kind regards,
Gerd
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