Comment # 25
on bug 101946
from Luke A. Guest
> Hi Luke, few questions. When booting the host, do you boot with amdgpu or vfio-pci bound to the GPU? After you've started a VM, did you bind back to amdgpu or did you stay on vfio-pci? I have 2 AMD GPU's, R9 390 (host) and R9 380 (guest). I boot with the 380 being passed over to vfio-pci. On exit the VM sets the 380 back to vfio-pci. > Is it during vfio or amdgpu control that your system hangs on the second boot? It was during a boot of the VM, the devices were attached to the vfio-pci driver. > If it's during amdgpu, have you tried my patch from comment 20? I haven't tried it, I don't think it would apply to my card as it's VI not CIK. Although, if I were using the 390 (CIK) it likely would. The issues are similar though and I believe I've just proved that the so called hw reset bug, in may case anyway, is sw not hw.
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