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Manages GPU memory allocation, execution queues, and hardware access.
: Write a simple kernel module that tracks where your driver maps its video buffers ( ioremap ). Hands On Projects For The Linux Graphics Subsystem
: Every graphics card exposes a device file under /dev/dri/ . You must locate and open the primary card node, usually /dev/dri/card0 . Manages GPU memory allocation
: Use mmap on the dumb buffer file descriptor to get a raw pointer to the video memory in user space. Hands On Projects For The Linux Graphics Subsystem