<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Rebinding AMDGPU causes initialization errors [R9 290]" href="https://bugs.freedesktop.org/show_bug.cgi?id=101946#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Rebinding AMDGPU causes initialization errors [R9 290]" href="https://bugs.freedesktop.org/show_bug.cgi?id=101946">bug 101946</a> from <a class="email" href="mailto:laguest@archeia.com" title="Luke A. Guest <laguest@archeia.com>"> Luke A. Guest</a> <pre>> 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 <a href="show_bug.cgi?id=101946#c20">comment 20</a>? 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.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>