just wanted to report that i got the external graphics card to work with native windows 7 and setup 1.x + pci compaction! see: http://blog.lastlog.de/posts/setup-1.x/ i hope to get it also working in linux host using kvm+win7 as guest soon. On 18.03.2015 21:48, Joachim Schiele wrote: > hi, > > i've run with pci=realloc two tests, the results are here (also the > dmesg) outputs: > > https://lastlog.de/wiki/index.php/T530%2BNvida_GTX_660_TI_eGPU_via_PE4H#debugging_using_pci.3Drealloc > > thanks in advance, > joachim schiele > > > On 18.03.2015 18:06, Bjorn Helgaas wrote: >> [+cc Alex] >> >> Hi Joachim, >> >> Thanks a lot for the bug report. >> >> On Wed, Mar 18, 2015 at 8:32 AM, Joachim Schiele <js@xxxxxxxxxx> wrote: >>> hi, >>> >>> === question === >>> with the setup described below, i can't pass the graphics adapter into a >>> KVM guest as described below. >>> >>> is the BAR stuff in the listing an error i wuld have to fix in order to >>> get my eGPU running? if so, what could i do about it >> >> Yes. If we can't assign resources to the BARs, we can't enable the >> device. If you boot with "pci=realloc", Linux will try harder to >> assign space (including moving other devices to make space if >> necessary). >> >>> i've seen that the >>> laptop will hang on boot if the eGPU is powered on system startup. >> >> It's possible the BIOS is hanging because it tried to assign space for >> the eGPU but failed. >> >>> i can >>> see the adapter after hotplugging it using lspci and i never see an >>> image on the external display. >> >> The device will appear in lspci even if we can't assign space for it. >> In that case the device would not work, even though it appears in >> lspci. >> >> So please try "pci=realloc". Also, please collect a complete dmesg >> log and "lspci -vv" output (with eGPU attached). That will contain >> the information needed to see whether it's possible even in principle >> to make this work. >> >>> my config is this: >>> sudo qemu-system-x86_64 -enable-kvm \ >>> -m 8192 \ >>> -M q35 \ >>> -cpu host,kvm=off \ >>> -smp 4,sockets=1,cores=4,threads=1 \ >>> -vga none \ >>> -vnc none \ >>> -device >>> ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1 \ >>> -device >>> vfio-pci,host=04:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on \ >>> -device vfio-pci,host=04:00.1,bus=root.1,addr=00.1 \ >>> -drive >>> file=/home/joachim/en_windows_7_professional_x64_dvd_X15-65805.iso,id=isocd >>> -device ide-cd,bus=ide.1,drive=isocd \ >>> -drive file=/var/lib/libvirt/images/win7.qcow2,format=qcow2,id=hdd >>> -device ide-hd,bus=ide.0,drive=hdd \ >>> -bios /usr/share/seabios/bios.bin \ >>> -soundhw ac97 >>> >>> === when hotplugging the eGPU === >>> i want to use a Nvidia GTX 660 TI as an eGPU using PE4H and when i >>> hotplug the ePCI adapter i get this log on a 3.18 ubuntu kernel: >>> >>> [ 960.145002] vgaarb: device changed decodes: >>> PCI:0000:00:02.0,olddecodes=none,decodes=io+mem:owns=none >>> [ 966.574858] pci 0000:04:00.0: [10de:1183] type 00 class 0x030000 >>> [ 966.574892] pci 0000:04:00.0: reg 0x10: [mem 0x00000000-0x00ffffff] >>> [ 966.574921] pci 0000:04:00.0: reg 0x14: [mem 0x00000000-0x07ffffff >>> 64bit pref] >>> [ 966.574950] pci 0000:04:00.0: reg 0x1c: [mem 0x00000000-0x01ffffff >>> 64bit pref] >>> [ 966.574963] pci 0000:04:00.0: reg 0x24: [io 0x0000-0x007f] >>> [ 966.574974] pci 0000:04:00.0: reg 0x30: [mem 0x00000000-0x0007ffff pref] >>> [ 966.575224] vgaarb: device added: >>> PCI:0000:04:00.0,decodes=io+mem,owns=none,locks=none >>> [ 966.575227] vgaarb: device changed decodes: >>> PCI:0000:00:02.0,olddecodes=io+mem,decodes=none:owns=none >>> [ 966.575327] pci 0000:04:00.1: [10de:0e0a] type 00 class 0x040300 >>> [ 966.575356] pci 0000:04:00.1: reg 0x10: [mem 0x00000000-0x00003fff] >>> [ 966.998345] pci 0000:04:00.0: BAR 1: no space for [mem size >>> 0x08000000 64bit pref] >>> [ 966.998350] pci 0000:04:00.0: BAR 1: failed to assign [mem size >>> 0x08000000 64bit pref] >>> [ 966.998353] pci 0000:04:00.0: BAR 3: no space for [mem size >>> 0x02000000 64bit pref] >>> [ 966.998355] pci 0000:04:00.0: BAR 3: failed to assign [mem size >>> 0x02000000 64bit pref] >>> [ 966.998357] pci 0000:04:00.0: BAR 0: no space for [mem size 0x01000000] >>> [ 966.998358] pci 0000:04:00.0: BAR 0: failed to assign [mem size >>> 0x01000000] >>> [ 966.998360] pci 0000:04:00.0: BAR 6: assigned [mem >>> 0xf1400000-0xf147ffff pref] >>> [ 966.998363] pci 0000:04:00.1: BAR 0: assigned [mem 0xf1480000-0xf1483fff] >>> [ 966.998369] pci 0000:04:00.1: BAR 0: error updating (0xf1480000 != >>> 0xffffffff) >>> [ 966.998373] pci 0000:04:00.0: BAR 5: assigned [io 0x3000-0x307f] >>> [ 966.998379] pci 0000:04:00.0: BAR 5: error updating (0x003001 != >>> 0xffffffff) >>> [ 966.998392] pcieport 0000:00:1c.2: Max Payload Size set to 128/ 128 >>> (was 128), Max Read Rq 128 >>> [ 966.998403] pci 0000:04:00.0: Max Payload Size set to 16384/ 256 (was >>> 16384), Max Read Rq 16384 >>> [ 966.998414] pci 0000:04:00.1: Max Payload Size set to 16384/ 256 (was >>> 16384), Max Read Rq 16384 >>> [ 966.998472] pci-stub 0000:04:00.0: claimed by stub >>> [ 966.998495] pci-stub 0000:04:00.1: claimed by stub >>> [ 967.099040] pcieport 0000:00:1c.2: Max Payload Size set to 128/ 128 >>> (was 128), Max Read Rq 128 >>> [ 967.099059] pci-stub 0000:04:00.0: Max Payload Size set to 128/ 256 >>> (was 128), Max Read Rq 512 >>> [ 967.099075] pci-stub 0000:04:00.1: Max Payload Size set to 128/ 256 >>> (was 128), Max Read Rq 512 >>> [ 7735.938854] vgaarb: device changed decodes: >>> PCI:0000:00:02.0,olddecodes=none,decodes=io+mem:owns=none >>> >>> >>> >>> >>> more at: >>> >>> https://lastlog.de/wiki/index.php/T530%2BNvida_GTX_660_TI_eGPU_via_PE4H >>> >>> i derived the scripts i'm using from this guide: >>> http://www.pugetsystems.com/labs/articles/Multiheaded-NVIDIA-Gaming-using-Ubuntu-14-04-KVM-585/ >>> >>> -- >>> 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 > > -- 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
