Single-GPU-Passthrough VS forcefully-remove-bootfb

Link to hook scripts: https://github.com/joeknock90/Single-GPU-Passthrough

Yes but that's a different kettle of fish. You then don't need two gpus, although if you do it can be useful. Start here and see how deep the rabbit hole goes https://github.com/joeknock90/Single-GPU-Passthrough

Im assuming you're on a single gpu setup and, as such are trying to do single gpu passthrough with a single nvidia card. so you'll likely have to run some libvirt hooks or smth to run scripts to unbind your gpu once you start your vm. In which case id suggest going through these two guides 1 2 which go over completely passing through your single gpu when you start your vm

Single GPU passthrough: https://github.com/joeknock90/Single-GPU-Passthrough

Out of curiosity, who is Muta, the video dude, or the guide writer, or someone else? From the GitHub it sounded like running the commands from the guide would create a qemu.d/[VM Name]/prepare/begin/start.sh . If I were to simply create those directories myself, and then script as described in the video, I should be good?

Thanks for the info. Some of these I recognize from a single gpu passthrough project on github that i used on my main rig... https://github.com/joeknock90/Single-GPU-Passthrough

Nice find, https://github.com/furkanmustafa/forcefully-remove-bootfb fixed it for me.

If you are bound to the simplefb, you might still run into the same issue due to BOOTFB occupying the same memory space as your GPU. You can see if this is the case by doing cat /proc/iomem and looking for the pcie address of your GPU. I personally reverted to an older kernel and bypassed this because I was having other issues at the time, but if my guess is correct, you should be able to forcefully unmap BOOTFB with this repo

My next step was to try a later kernel that supports my card so I could replicate the environment (at least somewhat) I had with my 580. Unfortunately, with the edge kernel from alpine I get the (paraphrased) error Failed to mmap 0000:0b:00.0. Performance may be slow. I found that alpine's edge kernel version uses simplefb instead of efifb. I did the following on the above bind script: sed 's/efi-framebuffer/simple-framebuffer/g' -i bind_devices.sh to no avail. The gpu was clearly unbound from the framebuffer with this modification, but BOOTFB (AFAICT, the simple-framebuffer) was still in the same address range as my GPU in /proc/iomem, which of course means the 'Failed to mmap' error remained. I found a repository that forcefully unmaps BOOTFB's address range and ran that script (after compiling the kernel module of course) after unbinding the simple framebuffer with still no luck. After work, the plan is to