Function is_gpu_class

crates/openshell-vfio/src/gpu.rs:13–24

(class_str: &str)

const GPU_CLASS_DISPLAY_3D: u32 = 0x0302;

fn is_gpu_class(class_str: &str) -> bool {
    if class_str == GPU_CLASS_DISPLAY_VGA {
        return true;
    }
    // 3D controller: 0x0302xx
    if let Some(hex) = class_str.strip_prefix("0x")
        && let Ok(val) = u32::from_str_radix(hex, 16)
    {
        return (val >> 8) == GPU_CLASS_DISPLAY_3D;
    }
    false
}

/// Scan sysfs for NVIDIA GPUs eligible for VFIO passthrough.
pub fn probe_host_nvidia_vfio_readiness(sysfs: &SysfsRoot) -> Vec<PciInfo> {