ah nice! thanks for reporting back. i'm looking forward to testing your cmdline this weekend. On 28.05.2015 06:27, Alex Williamson wrote: > On Sat, 2015-05-23 at 20:12 +0200, Joachim Schiele wrote: >> 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. > > I just setup something similar, using the EXP GDC "Beast" rather than > the PE4H. My Lenovo T530 only leaves 390MB for MMIO space and doesn't > provide any 64bit space via ACPI. I also need to fiddle with the > switches to delay the card so the laptop doesn't hang during BIOS boot. > I pass pci=nocrs,realloc on the kernel commandline in order to get the > GPU programmed. I've only actually tested it with KVM/VFIO GPU > assignment and it seems to work well, or at least as well as can be > expected over a x1 5GT/s link. Thanks, > > Alex > >> 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 > > > -- Joachim Schiele blog: http://blog.lastlog.de wiki: http://lastlog.de jabber: josh@xxxxxxxxxxxxx GPG: C6AC8770
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