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[Qemu-devel] [Bug 1265998] Re: vfio-pci passed Radeon 7870XT is unstable


From: Alex Williamson
Subject: [Qemu-devel] [Bug 1265998] Re: vfio-pci passed Radeon 7870XT is unstable on first boot of a Windows 8.1 guest
Date: Sat, 04 Jan 2014 14:49:27 -0000

Does this only happen with hugepages?  Does it happen with 2M hugepages?

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https://bugs.launchpad.net/bugs/1265998

Title:
  vfio-pci passed Radeon 7870XT is unstable on first boot of a Windows
  8.1 guest

Status in QEMU:
  New

Bug description:
  I'm passing a Radeon 7870XT to a Windows 8.1 guest. It works
  flawlessly (I tested it by a 12 hour Furmark run), but only on second
  lauch of the guest. On first launch after I get screen corruption on
  any 3D operation in guest (even showing a search box in Chrome) and
  the guest becomes unusable with constant driver resets to a point,
  when it grinds to a halt. At that moment I get about ~1K of log
  entries similar to

  sty 04 11:12:57 miner kernel: AMD-Vi: Event logged [IO_PAGE_FAULT 
device=01:00.0 domain=0x0002 address=0x000000007bc4c100 flags=0x0010]
  sty 04 11:12:57 miner kernel: AMD-Vi: Event logged [IO_PAGE_FAULT 
device=01:00.0 domain=0x0002 

  When I abort first launch of the quest with a monitor quit command
  during during guest BIOS initialisation, on a second launch I get the
  following errors in Qemu monitor:

  qemu-system-x86_64: vfio_dma_map(0x7f4b93fbbd40, 0x0, 0xb0000000, 
0x2aaac0000000) = -16 (Device or resource busy)                                 
                                 
  qemu-system-x86_64: vfio_dma_map(0x7f4b93fbbd40, 0xc0000, 0xaff40000, 
0x2aaac00c0000) = -16 (Device or resource busy)                                 
                             
  qemu-system-x86_64: vfio_dma_map(0x7f4b93fbbd40, 0xc8000, 0xaff38000, 
0x2aaac00c8000) = -16 (Device or resource busy)                                 
                             
  qemu-system-x86_64: vfio_dma_map(0x7f4b93fbbd40, 0xd0000, 0xaff30000, 
0x2aaac00d0000) = -16 (Device or resource busy)     

  and the following entries in the kernel log

  sty 01 22:04:53 miner kernel: vfio_ecap_init: 0000:01:00.0 hiding ecap 
address@hidden                                                                  
                                
  sty 01 22:04:55 miner kernel: ------------[ cut here ]------------            
                                                                                
                     
  sty 01 22:04:55 miner kernel: WARNING: CPU: 3 PID: 1012 at 
drivers/vfio/vfio_iommu_type1.c:685 vfio_dma_do_map+0x43c/0x838 
[vfio_iommu_type1]()                                    
  sty 01 22:04:55 miner kernel: Modules linked in: tun bridge stp llc bnep 
vfio_pci vfio_iommu_type1 vfio fuse ts2020 ds3000 dvb_usb_dw2102 kvm_amd kvm 
crc32_pclmul c...luetooth rc_
  sty 01 22:04:55 miner kernel: CPU: 3 PID: 1012 Comm: qemu-system-x86 Not 
tainted 3.13.0-2-mainline #1                                                    
                          
  sty 01 22:04:55 miner kernel: Hardware name: To Be Filled By O.E.M. To Be 
Filled By O.E.M./FM2A85X Extreme6, BIOS P2.30 07/11/2013                        
                         
  sty 01 22:04:55 miner kernel:  0000000000000009 ffff8804311b9d20 
ffffffff814ddc72 0000000000000000                                               
                                  
  sty 01 22:04:55 miner kernel:  ffff8804311b9d58 ffffffff8105f2ed 
00000000fffffff0 00000000b0000000                                               
                                  
  sty 01 22:04:55 miner kernel:  00000000000b0000 00000000b0000000 
0000000000000000 ffff8804311b9d68                                               
                                  
  sty 01 22:04:55 miner kernel: Call Trace:                                     
                                                                                
                     
  sty 01 22:04:55 miner kernel:  [<ffffffff814ddc72>] dump_stack+0x4d/0x6f      
                                                                                
                     
  sty 01 22:04:55 miner kernel:  [<ffffffff8105f2ed>] 
warn_slowpath_common+0x7d/0xa0                                                  
                                               
  sty 01 22:04:55 miner kernel:  [<ffffffff8105f3ca>] 
warn_slowpath_null+0x1a/0x20                                                    
                                               
  sty 01 22:04:55 miner kernel:  [<ffffffffa0ce9dec>] 
vfio_dma_do_map+0x43c/0x838 [vfio_iommu_type1]                                  
                                               
  sty 01 22:04:55 miner kernel:  [<ffffffffa0cea3f9>] 
vfio_iommu_type1_ioctl+0x211/0x288 [vfio_iommu_type1]                           
                                               
  sty 01 22:04:55 miner kernel:  [<ffffffffa0ce0e28>] 
vfio_fops_unl_ioctl+0x78/0x340 [vfio]                                           
                                               
  sty 01 22:04:55 miner kernel:  [<ffffffff811adfb8>] do_vfs_ioctl+0x2d8/0x4b0  
                                                                                
                     
  sty 01 22:04:55 miner kernel:  [<ffffffff811ae211>] SyS_ioctl+0x81/0xa0       
                                                                                
                     
  sty 01 22:04:55 miner kernel:  [<ffffffff814ebd2d>] 
system_call_fastpath+0x1a/0x1f                                                  
                                               
  sty 01 22:04:55 miner kernel: ---[ end trace 53ac540a2e8783dc ]---            
                                                                                
                     
  sty 01 22:04:56 miner kernel: ------------[ cut here ]------------            

  but the guest works flawlessly (even with reboots).

  qemu --version
  QEMU emulator version 1.7.50, Copyright (c) 2003-2008 Fabrice Bellard
  (a build of Arch qemu-git package from 2013-12-24, but the errors is the same 
on stock 1.7.0 Qemu)

  uname -a:
  Linux miner 3.13.0-2-mainline #1 SMP PREEMPT Wed Jan 1 14:37:23 CET 2014 
x86_64 GNU/Linux
  (Arch linux-mainline package with 3.13-rc5, but errors are exactly the same 
on stock 3.12.6-1)

  kernel command line:
  Command line: BOOT_IMAGE=/vmlinuz-linux-mainline 
root=UUID=4598b2bf-a2a9-46f8-bddd-e010f0af617a rw quiet elevator=deadline 
rootflags=data=writeback nohz=off iommu=pt pci-stub.ids=1002:679e,1002:aaa0 
radeon.dpm=1 radeon.fastfb=1 transparent_hugepage=never hugepagesz=1G 
hugepages=6 default_hugepagesz=1G

  qemu command line:
  /usr/bin/qemu-system-x86_64 -bios /usr/share/qemu/bios.bin \
    -cpu Opteron_G4 -smp 2,sockets=1,cores=2,threads=1 \
    -m 4096 -mem-prealloc -mem-path /dev/hugepages \
    -nodefaults -M q35 -enable-kvm \
    -monitor stdio -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,romfile=/usr/share/qemu/Tahiti.rom
 \
    -device vfio-pci,host=01:00.1,bus=pcie.0 -device ahci,bus=pcie.0,id=ahci \
    -usb -usbdevice host:072f:9000 \
    -netdev bridge,br=br0,id=hostnet0 \
    -device virtio-net-pci,netdev=hostnet0,id=net0 \
    -drive 
file=/home/mwegrzynek/VM/vmwin801.qcow2,if=virtio,cache=writeback,aio=native \
    -drive file=/home/mwegrzynek/Pobrane/Windows/Windows8.iso,id=isocd -device 
ide-cd,bus=ahci.1,drive=isocd 
    -drive 
file=/home/mwegrzynek/Pobrane/Windows/virtio-win-0.1-74.iso,id=isocd2 -device 
ide-cd,bus=ahci.2,drive=isocd2 \
    -boot c \
    -serial none \
    -parallel none \ 
    -vga none \
    -nographic

  lspci:
  00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Root Complex
  00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) 
I/O Memory Management Unit
  00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Trinity [Radeon HD 7660D]
  00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Root Port
  00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI 
Controller (rev 03)
  00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI 
Controller (rev 03)
  00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA 
Controller [AHCI mode] (rev 40)
  00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
  00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI 
Controller (rev 11)
  00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
  00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI 
Controller (rev 11)
  00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 
14)
  00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD] FCH IDE Controller
  00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia 
Controller (rev 01)
  00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
  00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40)
  00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
  00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI 
bridge (PCIE port 0)
  00:15.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI 
bridge (PCIE port 2)
  00:15.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI 
bridge (PCIE port 3)
  00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 0
  00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 1
  00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 2
  00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 3
  00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 4
  00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 
10h-1fh) Processor Function 5
  01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Tahiti LE [Radeon HD 7870 XT]
  01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT HDMI 
Audio [Radeon HD 7970 Series]
  03:00.0 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.1 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.2 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.3 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.4 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.5 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.6 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  03:00.7 USB controller: MosChip Semiconductor Technology Ltd. MCS9990 PCIe to 
4‐Port USB 2.0 Host Controller
  04:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host 
Controller
  05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)

  Please let me now, if any other information is needed.

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