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Date: Thu, 19 Nov 2015 14:05:31 +0200
From: "Michael S. Tsirkin" <mst@redhat.com>
Message-ID: <20151119120531.GA27246@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] virtio: Implement userspace forwarding for
	host notifiers
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To: Pavel Fedin <p.fedin@samsung.com>
Cc: 'Cornelia Huck' <cornelia.huck@de.ibm.com>, 'Christian Borntraeger' <borntraeger@de.ibm.com>, qemu-devel@nongnu.org

On Thu, Nov 19, 2015 at 03:02:12PM +0300, Pavel Fedin wrote:
>  Hello!
> 
> > > I think if you have motivation, you could implement userspace forwarding for ccw yourself,
> > since you know the thing and know how to
> > > do it. For MMIO it was indeed very simple.
> > 
> > I'll take a peek at your patch.
> 
>  This is actually a note for Michael. ccw support is one more reason for handling forwarding on virtio device level, not on memory
> region level.
> 
> Kind regards,
> Pavel Fedin
> Expert Engineer
> Samsung Electronics Research center Russia
> 

I don't know what is the right solution for CCW but patching
pci and mmio like you did will not help CCW at all.

-- 
MST