I have not gotten the VM to boot, there is always the multiple address spaces error. I don't think this is an ACS patch situation; the GPU sits in it's own vfio group with no other devices.
On Wed, Aug 12, 2020 at 2:06 PM daggs <da...@gmx.com> wrote: > Greetings kram, > > did it worked if you pass-though the gpu only, e.g. you see image but no > sound? > if so, there is a patch floating around which will disable the iommu > gorupings or something like that, it is a "breach of security" patch but it > might do the trick. > > *Sent:* Wednesday, August 12, 2020 at 10:08 PM > *From:* "kram threetwoone" <kram...@gmail.com> > *To:* "Alex Williamson" <alex.william...@redhat.com> > *Cc:* "vfio-users" <vfio-users@redhat.com> > *Subject:* Re: [vfio-users] pci passthrough of Intel igp > Funny this should come up, I was just trying to get mine to work last > night. > Here is the relevant into: https://hastebin.com/raw/oximifikim > Every time I tried to boot my QEMU, the error came back "group 1 used in > multiple address spaces" > The device is in it's own vfio group, and I've blacklisted the entire > linux sound core module to try and prevent the OS from touching the audio. > I'm not sure if this is necessary but I'm just trying anything. > > Alex thanks for the tip on looking into x-igd-gms, I haven't read about > that anywhere. > The hardware is an Odroid H2, Intel J4105 processor using Intel UHD 605. > > > On Wed, Aug 12, 2020 at 10:04 AM Alex Williamson < > alex.william...@redhat.com> wrote: > >> On Wed, 12 Aug 2020 17:46:33 +0100 >> "Patrick O'Callaghan" <p...@usb.ve> wrote: >> >> > On Wed, 2020-08-12 at 18:02 +0200, daggs wrote: >> > > Greetings, >> > > >> > > I have a machine with an Intel igp of HD Graphics 610 [8086:5902]. >> > > I found several discussions on the subject stating that it isn't >> possible but all of them are several years old. >> > > so I wanted to know if it is possible to pass it to a vm? >> > > I'm using kernel 5.4.43, libvirt-6.6.0 and qemu-5.0.0. >> > >> > If this is your only GPU, it doesn't make much sense. The idea of >> > passthrough is to let the VM control an additional GPU, not the main >> > one. >> >> There are plenty of people trying to assign their primary graphics >> device, it makes perfect sense for someone that doesn't intend to run a >> graphical environment on the host. Assigning the primary GPU can be >> more challenging, but that doesn't mean it isn't done. >> >> For daggs, I can only say try it yourself, I don't know of any specific >> reason it wouldn't work, but direct assignment of IGD is a fair bit of >> luck anyway since the hardware is constantly changing and we don't >> really keep up with it. You might need to play with the x-igd-gms >> value on the vfio-pci device in QEMU, several people have found that >> x-igd-gms=1 is necessary on some versions of hardware. Thanks, >> >> Alex >> >> _______________________________________________ >> vfio-users mailing list >> vfio-users@redhat.com >> https://www.redhat.com/mailman/listinfo/vfio-users >> > > _______________________________________________ vfio-users mailing list > vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users >
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