From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen-OTpzqLSitTUnbdJkjeBofR2eb7JE58TQ@public.gmane.org>
Subject: Re: [PATCH 00/10] igb_uio patches
Date: Tue, 10 Jun 2014 13:49:02 -0700
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On Tue, 10 Jun 2014 19:26:08 +0000
"Carew, Alan" <alan.carew-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:

> A question then, how does uio_pci_generic handle interrupt modes in terms of userspace interface when determining the configured interrupt mode?

uio_pci_generic only handles INTX disable, and nothing else. It doesn't do MSI
or allow IRQ control.

Also, it doesn't do iomap of resources, so theoretically if IOMMU is enabled
userspace would still not be able to access the resources.