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SubjectRe: [RFC] Simple userspace interface for PCI drivers
Lee Revell wrote:

> Why? There's no technical or legal requirement for userspace drivers to
> be GPLed.

I could see a benefit to tainting the kernel once userspace starts
poking at the hardware directly. That way at least we'd know that a
crash might be due to userspace doing bad things.

For instance, consider the case where userspace misprograms a DMA
engine, which starts overwriting random kernel memory.

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