[Qemu-devel] [Bug 1721221] [NEW] PCI-E passthrough of Nvidia GTX GFX card to Win 10 guest fails with "kvm_set_phys_mem: error registering slot: Invalid argument"

* [Qemu-devel] [Bug 1721221] [NEW] PCI-E passthrough of Nvidia GTX GFX card to Win 10 guest fails with "kvm_set_phys_mem: error registering slot: Invalid argument"
@ 2017-10-04 10:14 Joe Clifford
  2017-10-04 10:36 ` [Qemu-devel] [Bug 1721221] " Joe Clifford
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: Joe Clifford @ 2017-10-04 10:14 UTC (permalink / raw)
  To: qemu-devel

Public bug reported:

Problem: 
Passthrough of a PCI-E Nvidia GTX 970 GFX card to a Windows 10 guest from a Debian Stretch host fails after recent changes to kvm in QEMU master/trunk. Before this recent commit, everything worked as expected.

QEMU Version:
Master/trunk pulled from github 4/10/17 ( git reflog: d147f7e815 HEAD@{0} )

Host:
Debian Stretch kernel SMP Debian 4.9.30-2+deb9u5 (2017-09-19) x86_64 GNU/Linux

Guest:
Windows 10 Professional

Issue is with this commit:
https://github.com/qemu/qemu/commit/f357f564be0bd45245b3ccfbbe20ace08fe83ca8

Subsequent commit does not help:
https://github.com/qemu/qemu/commit/3110cdbd8a4845c5b5fb861b0a664c56d993dd3c#diff-7b7a17f6e8ba4195198dd685073f43cb

Error output from qemu: 
(qemu) kvm_set_phys_mem: error registering slot: Invalid argument

QEMU commandline used:

./sources/qemu/x86_64-softmmu/qemu-system-x86_64 -machine q35,accel=kvm -serial none -parallel none -name Windows \
-enable-kvm -cpu host,kvm=off,hv_vendor_id=sugoidesu,-hypervisor -smp 6,sockets=1,cores=3,threads=2 \
-m 8G -mem-path /dev/hugepages -mem-prealloc -balloon none \
-drive if=pflash,format=raw,readonly,file=vms/ovmf-x64/ovmf-x64/OVMF_CODE-pure-efi.fd \
-drive if=pflash,format=raw,file=vms/ovmf-x64/ovmf-x64/OVMF_VARS-pure-efi.fd \
-rtc clock=host,base=localtime \
-readconfig ./vms/q35-virtio-graphical.cfg \
-object iothread,id=iothread0 -object iothread,id=iothread1 -object iothread,id=iothread2 -object iothread,id=iothread3 \
-device virtio-scsi-pci,iothread=iothread0,id=scsi0 -device virtio-scsi-pci,iothread=iothread1,id=scsi1 -device virtio-scsi-pci,iothread=iothread2,id=scsi2 -device virtio-scsi-pci,iothread=iothread3,id=scsi3 \
-device scsi-hd,bus=scsi0.0,drive=drive0,bootindex=1 -device scsi-hd,bus=scsi1.0,drive=drive1 -device scsi-hd,bus=scsi2.0,drive=drive2 -device scsi-hd,bus=scsi3.0,drive=drive3 -device scsi-hd,bus=scsi1.0,drive=drive4 -device scsi-hd,bus=scsi2.0,drive=drive5 -device scsi-hd,bus=scsi3.0,drive=drive6 -device scsi-hd,bus=scsi1.0,drive=drive7 -device scsi-hd,bus=scsi2.0,drive=drive8 -device scsi-hd,bus=scsi3.0,drive=drive9 \
-drive if=none,id=drive0,file=vms/w10p64.qcow2,format=qcow2,cache=none,discard=unmap \
-drive if=none,id=drive1,file=vms/w10p64-2.qcow2,format=qcow2,cache=none,discard=unmap \
-drive if=none,id=drive2,file=/dev/mapper/w10p64-3,format=raw,cache=none \
-drive if=none,id=drive3,file=vms/w10p64-4.qcow2,format=qcow2,cache=none \
-drive if=none,id=drive4,file=vms/w10p64-5.qcow2,format=qcow2,cache=none \
-drive if=none,id=drive5,file=vms/w10p64-6.qcow2,format=qcow2,cache=none,discard=unmap \
-drive if=none,id=drive6,file=/dev/mapper/w10p64-7,format=raw,cache=none \
-drive if=none,id=drive7,file=vms/w10p64-8.qcow2,format=qcow2,cache=none,discard=unmap \
-device vfio-pci,host=01:00.0,multifunction=on,x-vga=on \
-device vfio-pci,host=01:00.1,multifunction=on \
-netdev type=tap,id=net1,ifname=tap1,script=no,downscript=no,vhost=on \
-device virtio-net-pci,netdev=net1,mac=52:54:00:18:32:c9,bus=pcie.2,addr=00.0,ioeventfd=on \
-device usb-host,bus=usb.0,hostbus=3,hostport=2.1 \
-device usb-host,hostbus=3,hostport=2.2 \
-device usb-host,bus=ich9-ehci-1.0,hostbus=3,hostport=2.4 \
-object input-linux,id=kbd1,evdev=/dev/input/event0,grab_all=yes,repeat=on \
-drive if=none,id=drive8,file=vms/w10p64.qcow2-9,format=qcow2,discard=unmap \
-drive if=none,id=drive9,file=vms/w10p64-10.qcow2,format=qcow2,cache=none,discard=unmap \
-device usb-host,bus=usb.0,hostbus=3,hostport=9 \
-monitor stdio

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1721221

Title:
  PCI-E passthrough of Nvidia GTX GFX card to Win 10 guest fails with
  "kvm_set_phys_mem: error registering slot: Invalid argument"

Status in QEMU:
  New

Bug description:
  Problem: 
  Passthrough of a PCI-E Nvidia GTX 970 GFX card to a Windows 10 guest from a Debian Stretch host fails after recent changes to kvm in QEMU master/trunk. Before this recent commit, everything worked as expected.

  QEMU Version:
  Master/trunk pulled from github 4/10/17 ( git reflog: d147f7e815 HEAD@{0} )

  Host:
  Debian Stretch kernel SMP Debian 4.9.30-2+deb9u5 (2017-09-19) x86_64 GNU/Linux

  Guest:
  Windows 10 Professional

  Issue is with this commit:
  https://github.com/qemu/qemu/commit/f357f564be0bd45245b3ccfbbe20ace08fe83ca8

  Subsequent commit does not help:
  https://github.com/qemu/qemu/commit/3110cdbd8a4845c5b5fb861b0a664c56d993dd3c#diff-7b7a17f6e8ba4195198dd685073f43cb

  Error output from qemu: 
  (qemu) kvm_set_phys_mem: error registering slot: Invalid argument

  QEMU commandline used:

  ./sources/qemu/x86_64-softmmu/qemu-system-x86_64 -machine q35,accel=kvm -serial none -parallel none -name Windows \
  -enable-kvm -cpu host,kvm=off,hv_vendor_id=sugoidesu,-hypervisor -smp 6,sockets=1,cores=3,threads=2 \
  -m 8G -mem-path /dev/hugepages -mem-prealloc -balloon none \
  -drive if=pflash,format=raw,readonly,file=vms/ovmf-x64/ovmf-x64/OVMF_CODE-pure-efi.fd \
  -drive if=pflash,format=raw,file=vms/ovmf-x64/ovmf-x64/OVMF_VARS-pure-efi.fd \
  -rtc clock=host,base=localtime \
  -readconfig ./vms/q35-virtio-graphical.cfg \
  -object iothread,id=iothread0 -object iothread,id=iothread1 -object iothread,id=iothread2 -object iothread,id=iothread3 \
  -device virtio-scsi-pci,iothread=iothread0,id=scsi0 -device virtio-scsi-pci,iothread=iothread1,id=scsi1 -device virtio-scsi-pci,iothread=iothread2,id=scsi2 -device virtio-scsi-pci,iothread=iothread3,id=scsi3 \
  -device scsi-hd,bus=scsi0.0,drive=drive0,bootindex=1 -device scsi-hd,bus=scsi1.0,drive=drive1 -device scsi-hd,bus=scsi2.0,drive=drive2 -device scsi-hd,bus=scsi3.0,drive=drive3 -device scsi-hd,bus=scsi1.0,drive=drive4 -device scsi-hd,bus=scsi2.0,drive=drive5 -device scsi-hd,bus=scsi3.0,drive=drive6 -device scsi-hd,bus=scsi1.0,drive=drive7 -device scsi-hd,bus=scsi2.0,drive=drive8 -device scsi-hd,bus=scsi3.0,drive=drive9 \
  -drive if=none,id=drive0,file=vms/w10p64.qcow2,format=qcow2,cache=none,discard=unmap \
  -drive if=none,id=drive1,file=vms/w10p64-2.qcow2,format=qcow2,cache=none,discard=unmap \
  -drive if=none,id=drive2,file=/dev/mapper/w10p64-3,format=raw,cache=none \
  -drive if=none,id=drive3,file=vms/w10p64-4.qcow2,format=qcow2,cache=none \
  -drive if=none,id=drive4,file=vms/w10p64-5.qcow2,format=qcow2,cache=none \
  -drive if=none,id=drive5,file=vms/w10p64-6.qcow2,format=qcow2,cache=none,discard=unmap \
  -drive if=none,id=drive6,file=/dev/mapper/w10p64-7,format=raw,cache=none \
  -drive if=none,id=drive7,file=vms/w10p64-8.qcow2,format=qcow2,cache=none,discard=unmap \
  -device vfio-pci,host=01:00.0,multifunction=on,x-vga=on \
  -device vfio-pci,host=01:00.1,multifunction=on \
  -netdev type=tap,id=net1,ifname=tap1,script=no,downscript=no,vhost=on \
  -device virtio-net-pci,netdev=net1,mac=52:54:00:18:32:c9,bus=pcie.2,addr=00.0,ioeventfd=on \
  -device usb-host,bus=usb.0,hostbus=3,hostport=2.1 \
  -device usb-host,hostbus=3,hostport=2.2 \
  -device usb-host,bus=ich9-ehci-1.0,hostbus=3,hostport=2.4 \
  -object input-linux,id=kbd1,evdev=/dev/input/event0,grab_all=yes,repeat=on \
  -drive if=none,id=drive8,file=vms/w10p64.qcow2-9,format=qcow2,discard=unmap \
  -drive if=none,id=drive9,file=vms/w10p64-10.qcow2,format=qcow2,cache=none,discard=unmap \
  -device usb-host,bus=usb.0,hostbus=3,hostport=9 \
  -monitor stdio

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