PCIe Passthrough Problem

[trendco]

Hi,

i want to pass through two of my PCIe Cards to the VM's.

One of them is a DVB-S Card. When i start the machine, i get the following message:

kvm: -device pci-assign,host=03:00.0,id=hostpci0,bus=pci.0,addr=0x10:
Host-side INTx sharing not supported, using MSI instead.
Some devices do not to work properly in this mode.
TASK OK

The VM works, but what mean the message "Host-side INTx sharing not supported..." ?


My second Card is a SATA Controller and that does not work.
When i start the VM, i get the following message:

kvm: -device pci-assign,host=01:00.0,id=hostpci0,bus=pci.0,addr=0x10: PCI region 5 at address 0xfbb10000 has size 0x200, which is not a multiple of 4K. You might experience some performance hit due to that.
kvm: -device pci-assign,host=01:00.0,id=hostpci0,bus=pci.0,addr=0x10: Failed to assign irq for "hostpci0": Input/output error
kvm: -device pci-assign,host=01:00.0,id=hostpci0,bus=pci.0,addr=0x10: Perhaps you are assigning a device that shares an IRQ with another device?
kvm: -device pci-assign,host=01:00.0,id=hostpci0,bus=pci.0,addr=0x10: Device 'kvm-pci-assign' could not be initialized
TASK ERROR...

Whats the Problem there?
Why is IRQ-Sharing not possible?


Alex