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Currently libdrm doesn't support auxbus, so it ignores Nova GPUs during enumeration. This adds support for devices on an auxbus. Rather than follow the lead of virtio and resolve the logical auxbus device back to the physical PCI device, we add a new bus type and associated parser. This is because in the future a single physical GPU may present multiple auxbus devices, so it needs to be possible to resolve individual devices even if they share the same parent GPU. [1] - https://rust-for-linux.com/nova-gpu-driver Alistair Popple (2): xf86drm: Pass PCI path rather than maj/min when parsing sysfs files xf86drm: Expose auxiliary bus GPUs as DRM_BUS_AUXILIARY xf86drm.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++------- xf86drm.h | 12 +++++ 2 files changed, 130 insertions(+), 17 deletions(-) -- 2.54.0