Hi, I have removed (00:02.0) from the grub argument line and been using: xen-pciback.hide=(00:14.0) modprobe.blacklist=i915,xhci_pci,xhci_hcd
with DomU.cfg containing: gfx_passthru=1 pci=['00:02.0','00:14.0'] Now I am seeing the VGA passthrough working, but the Windows DomU is stuck at 100% CPU utilization in the kernel. Any ideas why? I have PVDrivers installed, so I have added the pv list to this mail also. Neil On Mon, Oct 30, 2017 at 7:59 PM, Neil Sikka <neilsi...@gmail.com> wrote: > Hello, I am trying to passthrough 2 physical devices to a DomU: my > integrated GPU that’s integrated into my CPU and my USB controller. These 2 > devices are shown in lspci as follows: > > > 00:02.0 VGA compatible controller: Intel Corporation Haswell Integrated > Graphics Controller (rev 06) > > … > > 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host > Controller (rev 04) > > > My Setup: > > xen_pciback compiled and loading as a module > > Dom0 has the necessary backend drivers, so I’m assuming its pvops, which > the docs say should be using “xen-pciback” rather than “pciback” in classic > kernels. > > Appended to my grub line: xen-pciback.hide=(00:02.0)(00:14.0) > modprobe.blacklist=i915,xhci_pci,xhci_hcd > > i915.ko is renamed to _i915.ko because it gets loaded despite > modprobe.blacklist argument, and I think i915 is competing with > xen-pciback.ko for (00:02.0) > > DomU.cfg has: gfx_passthru=1 pci=['00:02.0','00:14.0'] > > Before starting DomU, I run xl pci-assignable-add 00:02.0 && xl > pci-assignable-add 00:14.0 > > > I have gotten each passthrough to independently work correctly on my > computer in the past, so I know the hardware supports it. When combining > the USB and GPU passthrough, I am seeing different things online and am > confused about the correct way to configure my Dom0/DomUs. Here: > > > https://wiki.xenproject.org/wiki/Xen_VGA_Passthrough > > > it says nothing about passing the BDF of the iGPU to xen-pciback.hide= > argument in grub. However that page links to a document, here: > > > https://wiki.xenproject.org/wiki/File:Xen_VGA_Passthrough_ > to_Windows_8_Consumer_Preview_64-bit_English_HVM_domU_and_ > Windows_XP_Home_Edition_SP3_HVM_domU_with_Xen_4.2- > unstable_Changeset_25070_and_Linux_Kernel_3.3.0_in_Ubuntu_ > 11.10_oneiric_ocelot_amd64_Final_Release_Dom0.pdf > > > which says to pass the BDF of the discrete GPU 01:00.0 to the grub > xen-pciback.hide parameter. When I use xen-pciback.hide=(00.02.0)(00:14.0), > I see 23 "vgaarb: this pci device is not a vga device" errors when I boot > Dom0 (which might be related to the fact that lspci reports 23 devices?). > When I remove (00:02.0), I dont see the vgaarb errors, but in both cases, > when I create the DomU, the VGA passthrough works. > > > When I use xen-pciback.hide=(00.02.0)(00:14.0) and try to passthrough > both together, I also get SATA write errors. > > > How can correctly I passthrough both the iGPU and the USB controller to > avoid SATA errors leading to disk corruption and vgaarb errors? > > > Thank You. > Neil > -- My Blog: http://www.neilscomputerblog.blogspot.com/ Twitter: @neilsikka
_______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
