I recorded both lspci -vvvv and lspci -xxxx for the following connections: - hotplug: when GPU is connected after the host was loaded - fresh: when GPU is connected before the host was started
The main difference is the following: 1c1 < # hotplug --- > # fresh 6c6 < Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- --- > Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- > Stepping- SERR- FastB2B- DisINTx- 8c8 < Interrupt: pin A routed to IRQ 18 --- > Interrupt: pin A routed to IRQ 255 10,13c10,14 < Region 1: Memory at <unassigned> (64-bit, prefetchable) [disabled] < Region 3: Memory at <unassigned> (64-bit, prefetchable) [disabled] < Region 5: I/O ports at 4000 [size=128] < Expansion ROM at f1400000 [virtual] [disabled] [size=512K] --- > Region 0: Memory at f0000000 (32-bit, non-prefetchable) [size=16M] > Region 1: Memory at c0000000 (64-bit, prefetchable) [size=256M] > Region 3: Memory at d0000000 (64-bit, prefetchable) [size=32M] > Region 5: I/O ports at 4000 [disabled] [size=128] > Expansion ROM at f1080000 [disabled] [size=512K] 30c31 < LnkSta: Speed 5GT/s (downgraded), Width x1 (downgraded) --- > LnkSta: Speed 2.5GT/s (downgraded), Width x1 (downgraded) 35a37 > AtomicOpsCap: 32bit- 64bit- 128bitCAS- 79c81 < Interrupt: pin B routed to IRQ 19 --- > Interrupt: pin B routed to IRQ 255 81c83 < Region 0: Memory at f1480000 (32-bit, non-prefetchable) [size=16K] --- > Region 0: Memory at f1000000 (32-bit, non-prefetchable) [size=16K] 98c100 < LnkSta: Speed 5GT/s (downgraded), Width x1 (downgraded) --- > LnkSta: Speed 2.5GT/s (downgraded), Width x1 (downgraded) 124,125c126,127 I can tell, that hotplug connects as 5GT/s and fresh - 2.5GT/s. And there is an obvious difference between Regions. The difference between lspci -xxxx but I don't know how to interpret the result: 124,125c126,127 < 00: de 10 03 1c 01 00 10 00 a1 00 00 03 00 00 80 00 < 10: 00 00 00 00 0c 00 00 00 00 00 00 00 0c 00 00 00 --- > 00: de 10 03 1c 02 00 10 00 a1 00 00 03 10 00 80 00 > 10: 00 00 00 f0 0c 00 00 c0 00 00 00 00 0c 00 00 d0 127c129 < 30: 00 00 00 00 60 00 00 00 00 00 00 00 00 01 00 00 --- > 30: 00 00 f8 ff 60 00 00 00 00 00 00 00 ff 01 00 00 132c134 < 80: 10 29 09 00 03 3d 45 00 43 01 12 10 00 00 00 00 --- > 80: 10 29 09 00 03 3d 45 00 43 01 11 10 00 00 00 00 198c200 < 4a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 78 --- > 4a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 221c223 < 610: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 --- > 610: 01 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 257c259 < 850: 00 00 00 00 78 00 00 00 ff 3f 00 00 00 00 00 00 --- > 850: 00 00 00 00 af 04 00 00 ff 3f 00 00 00 00 00 00 382,383c384,385 < 00: de 10 f1 10 02 00 10 00 a1 00 03 04 00 00 80 00 < 10: 00 00 48 f1 00 00 00 00 00 00 00 00 00 00 00 00 --- > 00: de 10 f1 10 02 00 10 00 a1 00 03 04 10 00 80 00 > 10: 00 00 00 f1 00 00 00 00 00 00 00 00 00 00 00 00 385c387 < 30: 00 00 00 00 60 00 00 00 00 00 00 00 00 02 00 00 --- > 30: 00 00 00 00 60 00 00 00 00 00 00 00 ff 02 00 00 390c392 < 80: 10 29 09 00 03 3d 45 00 43 01 12 10 00 00 00 00 --- > 80: 10 29 09 00 03 3d 45 00 43 01 11 10 00 00 00 00 456,457c458,459 < 4a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 78 < 4b0: 78 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 --- > 4a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff > 4b0: af 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ** Attachment added: "lspci-hotplug" https://bugs.launchpad.net/qemu/+bug/1897481/+attachment/5417476/+files/lspci-hotplug -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1897481 Title: qemu crashes with VGA pass-through, e-GPU, nvidia 1060 Status in QEMU: New Bug description: I try to pass-through nvidia 1060 6gb card, which is connected via ExpressCard (EXP-GDC converter). I can successfully run my virtual machine without pass-through, but when I try to add the devices, qemu crashes. The coredump contains: Stack trace of thread 3289311: #0 0x0000000000614c49 memory_region_update_container_subregions (qemu-system-x86_64 + 0x214c49) #1 0x00000000005c0e8c vfio_probe_nvidia_bar0_quirk (qemu-system-x86_64 + 0x1c0e8c) #2 0x00000000005bcec0 vfio_realize (qemu-system-x86_64 + 0x1bcec0) #3 0x000000000079b423 pci_qdev_realize (qemu-system-x86_64 + 0x39b423) #4 0x00000000006facda device_set_realized (qemu-system-x86_64 + 0x2facda) #5 0x0000000000887e57 property_set_bool (qemu-system-x86_64 + 0x487e57) #6 0x000000000088ac48 object_property_set (qemu-system-x86_64 + 0x48ac48) #7 0x000000000088d1d2 object_property_set_qobject (qemu-system-x86_64 + 0x48d1d2) #8 0x000000000088b1f7 object_property_set_bool (qemu-system-x86_64 + 0x48b1f7) #9 0x0000000000693785 qdev_device_add (qemu-system-x86_64 + 0x293785) #10 0x000000000061aad0 device_init_func (qemu-system-x86_64 + 0x21aad0) #11 0x000000000098c87b qemu_opts_foreach (qemu-system-x86_64 + 0x58c87b) #12 0x00000000006211cb qemu_init (qemu-system-x86_64 + 0x2211cb) #13 0x00000000005002aa main (qemu-system-x86_64 + 0x1002aa) #14 0x00007fce8af21152 __libc_start_main (libc.so.6 + 0x28152) #15 0x000000000050087e _start (qemu-system-x86_64 + 0x10087e) The whole running command is pretty long, since I use libvirt to manage my machines: LC_ALL=C \ PATH=/usr/local/sbin:/usr/local/bin:/usr/bin \ HOME=/var/lib/libvirt/qemu/domain-2-Win10 \ XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.local/share \ XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.cache \ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.config \ QEMU_AUDIO_DRV=spice \ /usr/bin/qemu-system-x86_64 \ -name guest=Win10,debug-threads=on \ -S \ -blockdev '{"driver":"file","filename":"/usr/share/edk2-ovmf/x64/OVMF_CODE.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/Win10_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}' \ -machine pc-q35-5.1,accel=kvm,usb=off,vmport=off,dump-guest-core=off,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format \ -cpu host,migratable=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff \ -m 8192 \ -overcommit mem-lock=off \ -smp 2,sockets=2,cores=1,threads=1 \ -uuid 7043c77b-4903-4527-8089-9679d9a17fee \ -no-user-config \ -nodefaults \ -chardev stdio,mux=on,id=charmonitor \ -mon chardev=charmonitor,id=monitor,mode=control \ -rtc base=localtime,driftfix=slew \ -global kvm-pit.lost_tick_policy=delay \ -no-hpet \ -no-shutdown \ -global ICH9-LPC.disable_s3=1 \ -global ICH9-LPC.disable_s4=1 \ -boot strict=on \ -device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 \ -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 \ -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 \ -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 \ -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 \ -device pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 \ -device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 \ -device virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 \ -blockdev '{"driver":"file","filename":"/home/sergiy/VirtualBox VMs/win4games.img","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-2-format","read-only":false,"driver":"raw","file":"libvirt-2-storage"}' \ -device ide-hd,bus=ide.0,drive=libvirt-2-format,id=sata0-0-0,bootindex=1 \ -blockdev '{"driver":"file","filename":"/home/sergiy/Downloads/Win10_2004_Ukrainian_x64.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \ -device ide-cd,bus=ide.1,drive=libvirt-1-format,id=sata0-0-1 \ -chardev pty,id=charserial0 \ -device isa-serial,chardev=charserial0,id=serial0 \ -chardev spicevmc,id=charchannel0,name=vdagent \ -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 \ -spice port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on \ -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 \ -chardev spicevmc,id=charredir0,name=usbredir \ -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=1 \ -chardev spicevmc,id=charredir1,name=usbredir \ -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=2 \ -device vfio-pci,host=0000:04:00.0,id=hostdev0,bus=pci.4,multifunction=on,addr=0x0 \ -device vfio-pci,host=0000:04:00.1,id=hostdev1,bus=pci.4,addr=0x0.0x1 \ -device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on I've forced vfio_pci module for the VGA, and ensured that lspci shows Kernel driver in use: vfio_pci My laptop is Thinkpad x230, that runs on Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz. I run 5.8.6-1-MANJARO kernel and run QEMU emulator version 5.1.0. Thank you for your attention. I'd love to provide more information, but I don't know what else matters. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1897481/+subscriptions
