VFIO: How to enable Resizeable BAR (ReBAR) in your VFIO Virtual Machine
What is ReBAR and Why Do I Want It Resizable BAR is a PCIe setting that allows the device (in this case GPU) to negotiate Base Address Register size (in this case access the whole frame buffer at once rather than in 256MB chunks). Some games make better use of this than others, and older
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