I am also experiencing the reset bug with a XFX-manufactured Vega 64, an AMD FX-9590 on an ASUS M5A99FX PRO R2.0. I plan to compile kernels and QEMU from their trunks, try on a known-working Intel computer (while I still have it), and report back with more information.
I just wanted to point out that there is another user who cannot reset their Vega 64 on a non-Threadripper CPU... On 10/04/2018 12:38 AM, Allen Dial wrote: > Thank you Alex, > > > I really appreciate your help! > > > Allen > > > On Oct 03, 2018, at 09:42 AM, Alex Williamson > <alex.william...@redhat.com> wrote: > > > On Wed, 03 Oct 2018 15:13:47 +0000 (GMT) > Allen Dial <ad...@mac.com> wrote: > > Questions: > 1. Is there a known command line, vfio, or grub statemnet that will > allow this passed through gpu to work after guest shutdown or resart > without requireing a state change of the host? > > None that I'm aware of. > > > 2. Are vfio or qemu "quirks" items that can help in situations like > these and are "quirks" configurable or initializable somehow? > > There are numerous quirks in vfio and QEMU, and I encourage vendors to > add more, but they're generally made to work automatically for the > devices where they apply. We have some quirks for the older Bonaire > and Hawaii AMD GPUs, but nothing for the more recent ones. IIRC there > were some patches in the amdgpu driver to help reset the card, but that > probably only helps for a Linux guest, or perhaps if you bind the device > back to the amdgpu driver in the host. > > > 3. Is there a place where I can go to reference all of the vfio > related kernel options and or paramaters that can be set and is there > a description of each of the possible options/parameters and how to > use them? > > You can run modinfo on the vfio kernel options, there's not a lot there > though. In QEMU you can see the device options via '-device > vfio-pci,?'. In both cases, most of the options are for debugging, but > ask for anything you're not sure of. QEMU doesn't provide a way to > describe the options. In general, AMD folks tend to deny that there > are reset issues, so except for the Bonaire/Hawaii quirks above where > they admit there's a silicon issue, we haven't gotten much support for > additional quirks. Thanks, > > Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
