My env is a x86-64 thin client with i3-4010U cpu，an IGD inside, which has HDMI and VGA, two output interfaces. My os is ubuntu 18.04, kernel version is 4.15.0, qemu version is 2.11.1.
root@test:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic root@test:~# uname -a Linux idv 4.15.0-32-generic #35-Ubuntu SMP Fri Aug 10 17:58:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux root@test:~# qemu-system-x86_64 --version QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.4) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers root@test:~# dpkg -s seabios | grep Version Version: 1.10.2-1ubuntu1 root@test:~# cat /proc/cpuinfo | grep 'model name' | head -1 model name : Intel(R) Core(TM) i3-4010U CPU @ 1.70GHz root@test:~# lspci 00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09) 00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4) 00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) According to article http://vfio.blogspot.com/2016/07/intel-graphics-assignment.html, i915 driver and some *fb is disabled in grub and modprobe blacklist: root@test:~# cat /etc/default/grub | grep GRUB_CMDLINE_LINUX_DEFAULT GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=on iommu=pt rd.driver.pre=vfio-pci video=vesafb:off vga=normal nofb nomodeset i915.modeset=0" root@test:~# cat /etc/modprobe.d/blacklist-i915.conf install i915 /bin/true Here "blacklist i915" has been used, but the module still could be loaded. When system is rebooted, the ubuntu graphic interface is always available. Login by ssh, I check it by some commands: root@test:~# cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.15.0-32-generic root=UUID=032d875c-1398-478c-b9b8-4e8a490bcd65 ro quiet splash intel_iommu=on iommu=pt rd.driver.pre=vfio-pci video=vesafb:off vga=normal nofb nomodeset i915.modeset=0 vt.handoff=1 root@test:~# lsmod | grep 915 usbhid 49152 0 parport 49152 3 lp,parport_pc,ppdev root@test:~# lsmod | grep vfio vfio_pci 45056 1 vfio_virqfd 16384 1 vfio_pci vfio_iommu_type1 24576 1 vfio 28672 5 vfio_iommu_type1,vfio_pci irqbypass 16384 2 kvm,vfio_pci root@test:~# cat /proc/iomem | grep fb f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f] f8000000-fbffffff : Reserved f8000000-fbffffff : pnp 00:05 Now I bind IGD to vfio-pci driver by script： https://github.com/andre-richter/vfio-pci-bind/blob/master/vfio-pci-bind.sh: root@test:~# echo "vfio-pci" > /sys/bus/pci/devices/0000:00:02.0/driver_override root@test:~# ./vfio-pci-bind.sh 0000:00:02.0 root@~:test# lspci -s 00:02.0 -v 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation Haswell-ULT Integrated Graphics Controller Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at b7c00000 (64-bit, non-prefetchable) [size=4M] Memory at c0000000 (64-bit, prefetchable) [size=128M] I/O ports at 4000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: vfio-pci Kernel modules: i915 Then I create a windows 7 instance by libvirt, and pass through hostdev IGD to it: root@test:~# cat win7.xml <domain type='kvm'> <name>win7</name> <uuid>a6b96841-2f52-4a1d-bed2-8ec9ecc4e6a0</uuid> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-bionic'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> </hyperv> <vmport state='off'/> </features> <cpu mode='custom' match='exact' check='partial'> <model fallback='allow'>Haswell-noTSX-IBRS</model> </cpu> <clock offset='localtime'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> <timer name='hypervclock' present='yes'/> </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/kvm-spice</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/home/windows_7_ultimate_with_sp1_x64.qcow2'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </disk> <controller type='usb' index='0' model='ich9-ehci1'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/> </controller> <controller type='usb' index='0' model='ich9-uhci1'> <master startport='0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/> </controller> <controller type='usb' index='0' model='ich9-uhci2'> <master startport='2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/> </controller> <controller type='usb' index='0' model='ich9-uhci3'> <master startport='4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <controller type='scsi' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> <serial type='pty'> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </source> <alias name='hostdev0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </hostdev> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </memballoon> </devices> </domain> After virsh create command, the instance is running, and the VGA screen turn to black, no output later. I repeated these operations, sometimes windows 7 can be seen on the screen successfully, but in most cases there’s only black screens. What’s wrong with my operation? Below is dmesg DMAR errors： [ 117.334573] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. [ 117.368066] DMAR: DRHD: handling fault status reg 3 [ 117.368079] DMAR: [DMA Read] Request device [00:02.0] fault addr afc00000 [fault reason 06] PTE Read access is not set [ 117.368149] DMAR: DRHD: handling fault status reg 3 [ 117.368156] DMAR: [DMA Read] Request device [00:02.0] fault addr afa80000 [fault reason 06] PTE Read access is not set [ 117.368554] DMAR: DRHD: handling fault status reg 3 [ 117.368561] DMAR: [DMA Read] Request device [00:02.0] fault addr afc00000 [fault reason 12] non-zero reserved fields in PTE [ 117.368566] DMAR: DRHD: handling fault status reg 3 [ 117.368572] DMAR: [DMA Read] Request device [00:02.0] fault addr afc01000 [fault reason 12] non-zero reserved fields in PTE [ 117.368576] DMAR: DRHD: handling fault status reg 3 [ 117.368582] DMAR: [DMA Read] Request device [00:02.0] fault addr afc03000 [fault reason 06] PTE Read access is not set [ 117.368587] DMAR: DRHD: handling fault status reg 3 [ 117.368592] DMAR: [DMA Read] Request device [00:02.0] fault addr afc04000 [fault reason 12] non-zero reserved fields in PTE [ 117.368597] DMAR: DRHD: handling fault status reg 2 [ 117.368602] DMAR: [DMA Read] Request device [00:02.0] fault addr afc05000 [fault reason 12] non-zero reserved fields in PTE [ 117.368607] DMAR: DRHD: handling fault status reg 3 [ 117.368612] DMAR: [DMA Read] Request device [00:02.0] fault addr afc07000 [fault reason 12] non-zero reserved fields in PTE [ 117.368621] DMAR: DRHD: handling fault status reg 3 [ 117.368626] DMAR: [DMA Read] Request device [00:02.0] fault addr afc08000 [fault reason 06] PTE Read access is not set [ 117.368631] DMAR: DRHD: handling fault status reg 3 [ 117.368636] DMAR: [DMA Read] Request device [00:02.0] fault addr afc09000 [fault reason 12] non-zero reserved fields in PTE [ 117.410215] random: crng init done [ 119.105305] vfio-pci 0000:00:02.0: ready 1123ms after FLR
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
