On Wed, 2014-10-22 at 17:34 +0200, Andreas Hartmann wrote: > Alex Williamson schrieb: > > Hi Andreas, > > > > On Fri, 2014-10-17 at 03:04 +0200, Andreas Hartmann wrote: > >> Hello Alex, > >> > >> Alex Williamson wrote: > >>> Hi Andreas, > >> [...] > >>> Sorry for the breakage. Is it possible to run lspci on the device in a > >>> loop from the host and capture whether we're failing to restore some of > >>> the VC bits to their previous state? > >> > >>> Does the problem also occur if you > >>> unbind from host driver, > >> > >> The machine is booted w/ blacklisted ath9k. Then, the device is bound to > >> vfio: > >> > >> echo "168c 0030" > /sys/bus/pci/drivers/vfio-pci/new_id > >> echo 0000:03:00.0 > /sys/bus/pci/devices/0000:03:00.0/driver/unbind > >> echo 0000:03:00.0 > /sys/bus/pci/drivers/vfio-pci/bind > >> > >> afterwards the VM is started -> hang. > >> > >> W/o starting th VM, I can bind it to vfio and unbind it from vfio w/o > >> any problem. > >> > >>> echo 1 > reset in pci-sysfs, > >> > >> echo 1 > /sys/bus/pci/devices/0000:03:00.0 works w/o any problem while > >> bound to vfio. Even after unbinding from vfio and rebinding to vfio > >> again ... . > >> > >>> and re-bind to the > >> > >> Do you mean loading ath9k in host system after unbinding from vfio? If > >> yes: Works w/o any problem. It's even possible to reset it or do a > >> ifconfig wlan0 up, ifconfig wlan0 down, rmmod ath9k, bind it to vfio > >> again and reset it, .... > >> > >> Looks like the hang only is triggered by qemu-system_x86_64 on startup > >> the VM. > >> > >>> host? I'll also try to reproduce on my 990fx system, but I won't be > >>> able to do that until next week due to travel. Thanks, > > > > Could you send me the lspci -vvvxxxx for the device and parent root > > port? Thanks, > > > Done with kernel 3.12.28 in host while the device was used in VM: > > # lspci -vt > -[0000:00]-+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (external gfx0 port B) > +-00.2 Advanced Micro Devices, Inc. [AMD/ATI] RD990 I/O Memory Management Unit (IOMMU) > +-02.0-[01]--+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] Turks PRO [Radeon HD 6570/7570] > | \-00.1 Advanced Micro Devices, Inc. [AMD/ATI] Turks/Whistler HDMI Audio [Radeon HD 6000 Series] > +-04.0-[02]----00.0 Etron Technology, Inc. EJ168 USB 3.0 Host Controller > +-05.0-[03]----00.0 Qualcomm Atheros AR93xx Wireless Network Adapter > +-09.0-[04]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller > +-0a.0-[05]----00.0 Etron Technology, Inc. EJ168 USB 3.0 Host Controller > +-11.0 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] > +-12.0 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller > +-12.2 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller > +-13.0 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller > +-13.2 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller > +-14.0 Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller > +-14.2 Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) > +-14.3 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller > +-14.4-[06]--+-06.0 Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 > | \-0e.0 VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller > +-14.5 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller > +-15.0-[07]-- > +-16.0 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller > +-16.2 Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller > +-18.0 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 0 > +-18.1 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 1 > +-18.2 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 2 > +-18.3 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 3 > +-18.4 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 4 > \-18.5 Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 5 > > > # lspci -s 03:00 -vvvxxxx > 03:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01) [snip] > > > I'm not sure what you mean with "parent root port". Could it be this: No, it's 00:05.0 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
