[Qemu-devel] [Bug 1256122] Re: vfio bug with all no VGA card

[Val532]

Some adjustment,

It's seem this not appear with my Intel network card i211.

But i can confirme this bug appear with AsMedia 1061 sata3 controler.

the complete dmesg :

[  404.206866] dmar: DRHD: handling fault status reg 2
[  404.206870] dmar: DMAR:[DMA Write] Request device [07:00.0] fault addr 
2affdf000
[  404.206870] DMAR:[fault reason 05] PTE Write access is not set
[  404.206877] dmar: DRHD: handling fault status reg 2
[  404.206879] dmar: DMAR:[DMA Read] Request device [07:00.0] fault addr 
2affda000
[  404.206879] DMAR:[fault reason 06] PTE Read access is not set

I start my VM with :

sudo qemu-system-x86_64 -M q35 -m 8G -enable-kvm -cpu Haswell -vga none 
-nographic -parallel none -boot menu=on \
-smp 4,sockets=1,cores=4,threads=1 \
-device 
ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1 \
-device vfio-pci,host=01:00.0,x-vga=on,addr=0.0,multifunction=on,bus=root.1 \   
                         //AMD HD7770
-device vfio-pci,host=01:00.1,bus=pcie.0 \                                      
                                                               //AMD audio HDMI
-device vfio-pci,host=07:00.0,bus=pcie.0 \                                      
                                                               //AsMedia 1061 
sata3 controler
-device vfio-pci,host=00:19.0,bus=pcie.0 \                                      
                                                               //Intel i211 
network
-net none \
-usb -usbdevice host:05e3:0607 -usbdevice host:1532:002f -usbdevice 
host:046d:c229 -usbdevice host:046d:c228   //Logiteck G19s and razer mouse

It's appear with linux kernel 3.12.0 and 3.13-rc2
Qemu version is 1.7 (no rc).

** Tags added: vfio

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https://bugs.launchpad.net/bugs/1256122

Title:
  vfio bug with all no VGA card

Status in QEMU:
  New

Bug description:
  Hello,

  I whant to report to you a realy big bug.

  vfio passthrough work only with VGA card ! When i try to use vfio with
  any other PCI or PCI-E card it does not work.

  When i use vfio for VGA i can reboot (or shutdown and start again) my
  VM with out problem, but for any other PCI card the VM refuse to
  reboot.

  In dmesg i have this error :

  dmar: DRHD: handling fault status reg 2
  dmar: DMAR:[DMA Read] Request device [xx:xx.x] fault addr 2affde000
  DMAR:[fault reason 06] PTE Read access is not set

  and some time the same but for Write and not Read.

  I found a kind of work around but it's ugly. Just detach your devices
  from vfio, re-atach to his normal driver and bind again to vfio.

  For information i use an Asrock Z87 Extrem 6 with a CoreI5 4570S
  My kernel is 3.12 and Qemu is 1.7-rc0

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