From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen-OTpzqLSitTUnbdJkjeBofR2eb7JE58TQ@public.gmane.org>
Subject: Re: [PATCH v4 17/26] virtio: Use port IO to get PCI
	resource.
Date: Tue, 10 Feb 2015 20:32:32 -0800
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To: Ouyang Changchun <changchun.ouyang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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On Mon,  9 Feb 2015 09:14:06 +0800
Ouyang Changchun <changchun.ouyang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:

> Make virtio not require UIO for some security reasons, this is to match 6Wind's virtio-net-pmd.
> 
> Signed-off-by: Changchun Ouyang <changchun.ouyang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

This breaks applications that use link state interrupt.

If the non-UIO mode is used link state interrupt fd is not available.