Re: Is it useful to support user level drivers

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 21 Jun 2001 12:04:34 +0100 (BST)

> level drivers (via ioperm, etc). However interrupts
> at user level are not supported, does anyone think
> it would be a good idea to add user level interrupt
> support ? I have a framework for it, but it still
> needs
> a lot of work.

The problem is that the IRQ has to be cleared in kernel space, because otherwise
you may deadlock.

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