On 8/29/25 1:07 PM, Wouter Snels wrote:
put something like this in /boot/loader.conf, the numbers below depend
on what pci slot your gpu is.
#pptdevs="179/0/0 179/0/1"
That portion of the configuration has already been applied on my end
--
Below is the complete list of arguments passed to bhyve.
/usr/sbin/bhyve -H -P -A -S -c 4 -m 4096M \
-s 0,hostbridge \
-s 1:0,passthru,12/0/0,rom=rx6700xt.rom \
-s 1:1,passthru,12/0/1 \
-s 2,nvme,debian.img \
-s 3,virtio-net,tap0 \
-s 4,ahci-cd,debian.iso \
-s 29,fbuf,tcp=0.0.0.0:5900,w=1920,h=1080 -s 30,xhci,tablet \
-s 31,lpc \
-l com1,/dev/nmdm2A \
-l bootrom,BHYVE_UEFI_CODE.fd,BHYVE_UEFI_VARS.fd,fwcfg=qemu \
debian_vm
The following VM snippets ensures the GPU passthrough to the VM is
functioning as expected.
lspci -D | grep -i amd
0000:00:01.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Navi 22 [Radeon RX 6700/6700 XT/6750 XT / 6800M/6850M XT]
(rev c1)
0000:00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi
21/23 HDMI/DP Audio Controller
The GPU resets as soon as a computation task is executed.
Aug 29 14:38:32 docker kernel: amdgpu: qcm fence wait loop timeout expired
Aug 29 14:38:32 docker kernel: amdgpu: The cp might be in an
unrecoverable state due to an unsuccessful queues preemption
Aug 29 14:38:32 docker kernel: amdgpu: Pasid 0x8003 DQM create queue
type 0 failed. ret -62
Aug 29 14:38:32 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU reset
begin!
Aug 29 14:38:32 docker kernel: amdgpu: Failed to suspend process 0x8003
Aug 29 14:38:32 docker kernel: amdgpu: Failed to suspend process 0x8002
Aug 29 14:38:33 docker kernel: amdgpu 0000:00:01.0: amdgpu: free PSP
TMR buffer
Aug 29 14:38:33 docker kernel: amdgpu 0000:00:01.0: amdgpu: MODE1 reset
Aug 29 14:38:33 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU mode1
reset
Aug 29 14:38:33 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU smu
mode1 reset
Aug 29 14:38:48 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU reset
succeeded, trying to resume
Aug 29 14:38:48 docker kernel: [drm] PCIE GART of 512M enabled (table
at 0x0000008000000000).
Aug 29 14:38:48 docker kernel: [drm] VRAM is lost due to GPU reset!
Aug 29 14:38:48 docker kernel: [drm] PSP is resuming...
Aug 29 14:38:49 docker kernel: [drm:psp_hw_start [amdgpu]] *ERROR* PSP
create ring failed!
Aug 29 14:38:49 docker kernel: [drm:psp_resume [amdgpu]] *ERROR* PSP
resume failed
Aug 29 14:38:49 docker kernel: [drm:amdgpu_device_fw_loading [amdgpu]]
*ERROR* resume of IP block <psp> failed -62
Aug 29 14:38:49 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU
reset(1) failed
Aug 29 14:38:58 docker kernel: amdgpu: qcm fence wait loop timeout expired
Aug 29 14:38:58 docker kernel: amdgpu: The cp might be in an
unrecoverable state due to an unsuccessful queues preemption
Aug 29 14:38:58 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU reset
end with ret = -62
Aug 29 14:38:58 docker kernel: amdgpu 0000:00:01.0: amdgpu: GPU reset
begin!
Aug 29 14:38:59 docker kernel: amdgpu 0000:00:01.0: amdgpu: Failed to
disallow df cstate
The vm is still up and running however the GPUs capabilities are lost.
Regards,
Petru
