Fix KMS initialization in virtualization environments with separate render/display nodes#2048
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phreer wants to merge 3 commits intoValveSoftware:masterfrom
Open
Fix KMS initialization in virtualization environments with separate render/display nodes#2048phreer wants to merge 3 commits intoValveSoftware:masterfrom
phreer wants to merge 3 commits intoValveSoftware:masterfrom
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This ensures the function's semantics align with its name and simplifies the implementation of subsequent patch.
In certain SR-IOV virtualization setups, rendering and display functions are split across different DRM nodes. A typical case is using an Intel iGPU Virtual Function (VF) as the Vulkan render device, while using virtio-GPU as the KMS device for output. If the detected Vulkan primary device is found to be unsatisfactory for KMS, the backend will now attempt to initialize an alternative KMS-capable device to ensure a working display.
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This PR improves device selection logic to support environments where the rendering device and display device are separate, which is common in SR-IOV and Virtualization setups (e.g., Intel iGPU VF for rendering + virtio-GPU for display).