Hello, my name is Paul.
I need to map a PCI device for a virtual machine.
I followed the tutorial "How to assign devices with KVM VT-d".
Giving the command "dmesg | grep-e-e dmar IOMMU" prompt does not
return anything!
The Linux distribution is Ubuntu server 9.10 with different kernel test:
1. the original 2.6.31-19-server ;
2. 2.6.31-19-server ricompiled with mudules Support for DMA Remapping
Devices;Enable DMA Remapping Devices;PCI Stub driver;Support for
Interrupt Remapping ;
3. 2.6.32.8 ricompiled with mudules Support for DMA Remapping
Devices;Enable DMA Remapping Devices;PCI Stub driver;Support for
Interrupt Remapping ;
Infrastructure virtualization is "KVM" installed from Ubuntu
repository (1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3) .
The virtual machine will install trixbox. The PCI card to map is a
"Digium TDM410p".
I tried in 2 ways.
1. Directly editing the XML file for the virtual machine with the
parameters indicated in the documentation:
...
<devices>
<hostdev mode='subsystem' type='pci'>
<source>
<address bus='0x01' slot='0x00' function='0x0'/> <-----this
is my personal configuration
</ source>
</ hostdev>
</ devices>
...
2. Adding the PCI card via virt-manager
The log massage in /var/log/libvirt/qemu are:
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/
bin HOME=/home/paolo USER=root LOGNAME=root /usr/bin/kvm -S -M pc-0.11
-m 512 -smp 1 -name tris -uuid 3fa6c3d5-50df-8aa6-dc4d-8b6ec369674f -
nographic -monitor unix:/var/run/libvirt/qemu/
tris.monitor,server,nowait -boot c -net none -serial none -parallel
none -usb -vga cirrus -pcidevice host=01:00.0
create_userspace_phys_mem: Invalid argument
assigned_dev_iomem_map: Error: create new mapping failed
There currently, KVM hosts a virtual machine that runs smoothly
without any problems. In fact, this virtual machine is running
Openfiler and has direct access to 2 physical disks installed on the
server.
Creating a new virtual machine can not connect the Digium card,
directly to the virtual machine.
Can someone kindly help me?
Thanks
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