[Bug 291337] amdgpu crash when calling unregister_fictitious_range() / on 14.3-RELEASE or 15.0-RELEASE

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291337

--- Comment #8 from Pierre Beyssac <[email protected]> ---
(In reply to Bjoern A. Zeeb from comment #7)

Thanks for the devices.hints tip, I didn't try this yet.

I already tried pptdevs, but it didn't seem to be honored by amdgpu, it stills
probes the device and crashes. Maybe my specification iq wrong?
The line was:
  pptdevs="14/0/0 14/0/1 14/0/2 14/0/3 14/0/4 14/0/6"
and the relevant pciconf output is below (full system pciconf -lv as an
attachment).

vgapci1@pci0:14:0:0:    class=0x030000 rev=0xc9 hdr=0x00 vendor=0x1002
device=0x1638 subvendor=0x1043 subdevice=0x8809
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Cezanne [Radeon Vega Series / Radeon Vega Mobile Series]'
    class      = display
    subclass   = VGA
hdac1@pci0:14:0:1:      class=0x040300 rev=0x00 hdr=0x00 vendor=0x1002
device=0x1637 subvendor=0x1043 subdevice=0x8809
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Renoir/Cezanne HDMI/DP Audio Controller'
    class      = multimedia
    subclass   = HDA
none0@pci0:14:0:2:      class=0x108000 rev=0x00 hdr=0x00 vendor=0x1022
device=0x15df subvendor=0x1043 subdevice=0x8809
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Raven/Raven2/FireFlight/Renoir/Cezanne Platform Security
Processor'
    class      = encrypt/decrypt
xhci1@pci0:14:0:3:      class=0x0c0330 rev=0x00 hdr=0x00 vendor=0x1022
device=0x1639 subvendor=0x1043 subdevice=0x87e1
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Renoir/Cezanne USB 3.1'
    class      = serial bus
    subclass   = USB
xhci2@pci0:14:0:4:      class=0x0c0330 rev=0x00 hdr=0x00 vendor=0x1022
device=0x1639 subvendor=0x1043 subdevice=0x87e1
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Renoir/Cezanne USB 3.1'
    class      = serial bus
    subclass   = USB
hdac2@pci0:14:0:6:      class=0x040300 rev=0x00 hdr=0x00 vendor=0x1022
device=0x15e3 subvendor=0x1043 subdevice=0x86c7
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Family 17h/19h/1ah HD Audio Controller'
    class      = multimedia
    subclass   = HDA

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