Hi,
I’m trying to passthrough two dual-port cards to a guest.
It seems to work fine until I actually the cards, then I get:
[ 306.667890] pcieport 0000:00:03.0: AER: Multiple Uncorrected (Fatal) error
received: id=0000
[ 306.667904] vfio-pci 0000:03:00.0: PCIe Bus Error: severity=Uncorrected
(Fatal), type=Unaccessible, id=0300(Unregistered Agent ID)
[ 306.667998] vfio-pci 0000:03:00.1: PCIe Bus Error: severity=Uncorrected
(Fatal), type=Unaccessible, id=0301(Unregistered Agent ID)
[ 306.668102] vfio-pci 0000:03:00.0: broadcast error_detected message
[ 307.710345] pcieport 0000:00:03.0: Root Port link has been reset
[ 307.710352] vfio-pci 0000:03:00.0: broadcast mmio_enabled message
[ 307.710355] vfio-pci 0000:03:00.0: broadcast resume message
[ 307.710357] vfio-pci 0000:03:00.0: AER: Device recovery successful
[ 307.710360] vfio-pci 0000:03:00.1: broadcast error_detected message
[ 308.734333] pcieport 0000:00:03.0: Root Port link has been reset
[ 308.734338] vfio-pci 0000:03:00.1: broadcast mmio_enabled message
[ 308.734340] vfio-pci 0000:03:00.1: broadcast resume message
[ 308.734342] vfio-pci 0000:03:00.1: AER: Device recovery successful
I swapped one card already in case it was faulty, now I got the same error on
the second one (above).
This is the configuration:
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'
multifunction='on'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x03' slot='0x00' function='0x1'/>
</source>
<address type='pci' domain='0x0000' bus='0x04' slot='0x00'
function='0x1'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x09' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'
multifunction='on'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x09' slot='0x00' function='0x1'/>
</source>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00'
function='0x1'/>
</hostdev>
Am I passing those devices correctly or can I somehow pass the “whole” device?
When I kill the guest the host sometimes recovers and sees both cards (all 4
ports), sometimes it doesn’t.
I found this
http://events.linuxfoundation.org/sites/events/files/slides/AER%20functionality%20of%20pass-through%20PCI-e%20device%20in%20Qemu.pdf
<http://events.linuxfoundation.org/sites/events/files/slides/AER%20functionality%20of%20pass-through%20PCI-e%20device%20in%20Qemu.pdf>
which didn’t exactly make me happy, but I’m already using a somewhat similiar
setup on a different machine where it just works. (there I’m passing one
function to VM1 and another to VM2, which I’m not sure now should even work?
:)).
I tried options vfio-pci disable_idle_d3=1 nointxmask=1 but that didn’t help.
Any ideas how to get it working? Is this a HW issue? A platform problem?
Hypervisor is Ubuntu 17.10, guest is Ubuntu 17.10 as well (kernel 4.13.0, qemu
2.10)
Thanks
Jan
