Date: Mon, 27 Jan 2020 01:43:16 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 243640] QEMU / KVM Q35 V4.X PCIe Virtual and Physical (Passthrough) Devices not detected Message-ID: <bug-243640-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243640 Bug ID: 243640 Summary: QEMU / KVM Q35 V4.X PCIe Virtual and Physical (Passthrough) Devices not detected Product: Base System Version: 12.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: drum@graphica.com.au Bug / Defect: PCIe attached devices are not detected on when running FreeBSD 12.1 on QEMU Q35 V 4.x Virtual Machines. This bug affects the following PCIe based devices: VirtIO - All em - When using e1000e QEMU emulator (PCIe attached Intel 1GbE NIC ix - PCI Passthrough Intel X550 10GbE NIC Likely all other PCIe devices whether via emulation or PCI Passthrough Issues was discovered while testing: Q35 with VirtIO: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236922 Q35 / OVMF with SCSI and Network Devices: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241774 Also appears to be root cause of defect raised with Q35 V4 and PCI Passthrough: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241581 Observed Behaviour: Running QEMU/KVM VM - Q35 V4.x / OVMF / SATA / VirtIO / e1000e / e1000 / vmxnet3 / PCI Passthrough to Intel X550 10GbE / FreeBSD 12.1 with recompiled kernel to disable netmap ("dev netmap") sys/amd64/conf/GENERIC to address found bug with Q35 + netmap devices (see above reported and resolved bugs). SATA - disk found VirtIO - disk not found e1000e - PCIe NIC not found e1000 - Legacy PCI NIC found as em0 vmxnet3 - PCI connected NIC found as vmx0 X550 10GbE - not found. Get the following: dmesg errors <<DMESG>> ... pcib2: <PCI-PCI bridge> mem 0xc8b87000-0xc8b87fff irq 22 at device 2.1 on pci0 pcib2: Failed to allocate interrupt for PCI-e events pcib3: <PCI-PCI bridge> mem 0xc8b86000-0xc8b86fff irq 22 at device 2.2 on pci0 pcib3: Failed to allocate interrupt for PCI-e events pcib4: <PCI-PCI bridge> mem 0xc8b85000-0xc8b85fff irq 22 at device 2.3 on pci0 pcib4: Failed to allocate interrupt for PCI-e events pcib5: <PCI-PCI bridge> mem 0xc8b84000-0xc8b84fff irq 22 at device 2.4 on pci0 pcib5: Failed to allocate interrupt for PCI-e events ... <<END DMESG>> ifconfig <<IFCONFIG>> # ifconfig -a lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> vmx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=e403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6> ether 52:53:01:17:15:aa inet XX.XXX.XXX.53 netmask 0xffffff80 broadcast 203.XXX.XXX.127 media: Ethernet autoselect status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> em0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=81209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWFILTER> ether 52:54:00:a4:13:df media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> <<END IFCONFIG>> Expected Behaviour: Should get all NIC visible: m0 (e1000), em1 (e1000e), ix0 (X550 10GbE PCI Passthrough), vmx0 (vmxnet3) Should get: -- SATA - /dev/adaNpN storage devices -- SCSI - /dev/daNpN VirtIO SCSI devices I then retested with except with QEMU Q35 V3.1: Storage" SATA - OK VirtIO SCSI - only ok when built with new VirtIO sub-system as per https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236922 Networking: e1000 - ok comes up as em0 e1000e - ok comes up as em1 vmxnet3 - ok comes up as vmx0 X550 10GbE - ok comes up as ix0 ifconfig <<IFCONFIG>> # ifconfig -a vmx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=e403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6> ether 52:53:01:17:15:aa inet XXX.XXX.XXX.53 netmask 0xffffff80 broadcast XXX.XXX.XXX.127 media: Ethernet autoselect status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> em0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=81209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWFILTER> ether 52:54:00:a4:13:df media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> ix0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6> ether b4:96:91:21:4a:ce media: Ethernet autoselect status: no carrier nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> em1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=81249b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LRO,WOL_MAGIC,VLAN_HWFILTER> ether 52:54:00:f8:3b:94 media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> <<END IFCONFIG>> Here is QEMU Q35 V3.1 with PCI passthrough XML snippet: <<LIBVIRT XML>> virsh dumpxml test-freebsd-12.1 <domain type='kvm' id='5'> <name>test-freebsd-12.1</name> <uuid>a50005d7-7425-435f-82e9-e76f18784693</uuid> <metadata> <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">; <libosinfo:os id="http://freebsd.org/freebsd/12.0"/>; </libosinfo:libosinfo> </metadata> <memory unit='KiB'>4194304</memory> <currentMemory unit='KiB'>4194304</currentMemory> <vcpu placement='static'>2</vcpu> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64' machine='pc-q35-3.1'>hvm</type> <loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader> <nvram>/home/XXX/DIR/OVMF_VARS.fd</nvram> </os> <features> <acpi/> <apic/> <vmport state='off'/> </features> <cpu mode='custom' match='exact' check='full'> <model fallback='forbid'>Broadwell-IBRS</model> <vendor>Intel</vendor> <feature policy='require' name='vme'/> <feature policy='require' name='ss'/> <feature policy='require' name='vmx'/> <feature policy='require' name='f16c'/> <feature policy='require' name='rdrand'/> <feature policy='require' name='hypervisor'/> <feature policy='require' name='arat'/> <feature policy='require' name='tsc_adjust'/> <feature policy='require' name='umip'/> <feature policy='require' name='md-clear'/> <feature policy='require' name='stibp'/> <feature policy='require' name='arch-capabilities'/> <feature policy='require' name='ssbd'/> <feature policy='require' name='xsaveopt'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='abm'/> <feature policy='disable' name='skip-l1dfl-vmentry'/> </cpu> <clock offset='utc'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <pm> <suspend-to-mem enabled='no'/> <suspend-to-disk enabled='no'/> </pm> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/home/XXX/DIR/test-hd1-01.qcow2'/> <backingStore/> <target dev='sda' bus='sata'/> <boot order='1'/> <alias name='sata0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/home/XXX/DIR/FreeBSD-12.1-RELEASE-amd64-dvd1.iso'/> <backingStore/> <target dev='sdb' bus='sata'/> <readonly/> <boot order='2'/> <alias name='sata0-0-1'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> ... ... <controller type='sata' index='0'> <alias name='ide'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <controller type='pci' index='0' model='pcie-root'> <alias name='pcie.0'/> </controller> <controller type='pci' index='1' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='1' port='0x10'/> <alias name='pci.1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/> </controller> <controller type='pci' index='2' model='pcie-to-pci-bridge'> <model name='pcie-pci-bridge'/> <alias name='pci.2'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </controller> <controller type='pci' index='3' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='3' port='0x11'/> <alias name='pci.3'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/> </controller> <controller type='pci' index='4' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='4' port='0x12'/> <alias name='pci.4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/> </controller> <controller type='pci' index='5' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='5' port='0x13'/> <alias name='pci.5'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/> </controller> <controller type='pci' index='6' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='6' port='0x14'/> <alias name='pci.6'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/> </controller> <controller type='virtio-serial' index='0'> <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </controller> <interface type='bridge'> <mac address='52:54:00:18:15:aa'/> <source bridge='br20'/> <target dev='vnet0'/> <model type='vmxnet3'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/> </interface> <interface type='bridge'> <mac address='52:54:00:a4:13:df'/> <source bridge='br20'/> <target dev='vnet1'/> <model type='e1000'/> <alias name='net1'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/> </interface> <interface type='bridge'> <mac address='52:54:00:f8:3b:94'/> <source bridge='br20'/> <target dev='vnet2'/> <model type='e1000e'/> <alias name='net2'/> <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/> </interface> ... ... <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x06' slot='0x00' function='0x1'/> </source> <alias name='hostdev0'/> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/> </hostdev> ... ... </domain> <<END LIBVIRT XML>> Diagnosis: Considerable testing and diagnosis as been done as part of find and resolving VirtIO and netmap issues. This has found how to replicate and work around the issues Q35 V4.X (Issue) and Q35 V31 (work around). So problem appears to be within PCI device driver and relates to Q35 V4.x using PCIe GEN4 specification aligned emulation. Tommy P has done considerable work to pin point likely source of issues: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241774#c74 I quote: "Starting with the Q35 QEMU 4.0 machine type, generic pcie-root-port will default to the maximum PCIe link speed (16GT/s) and width (x32) provided by the PCIe 4.0 specification." This now needs to be confirmed by FreeBSD PCI core team for resolution. Please advise if you need additional testing or diagnostic information. Cheers, John Hartley. -- You are receiving this mail because: You are the assignee for the bug.help
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