From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: What does CONFIG_XEN_PCI_PASSTHROUGH do?
Date: Thu, 1 Jul 2010 11:12:35 -0400
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>, xen-devel <xen-devel@lists.xensource.com>
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On Thu, Jul 01, 2010 at 07:17:53AM +0100, Ian Campbell wrote:
> Hi guys,
> 
> Is this option supposed to control anything? It doesn't currently appear
> to be used anywhere and there are other options which are used for
> pcifront (CONFIG_PCI_XEN) and pciback (CONFIG_XEN_PCIDEV_BACKEND).

It was used as an option to turn CONFIG_XEN_PCI
and CONFIG_SWIOTLB_XEN and .. um, I think that are the ones.

And the XEN_PCI_FRONTEND would select this which in turn would activate
the CONFIG_SWIOTLB_XEN and CONFIg_XEN_PIC.

At least that is what it used to be at some point. I think in my merge
trees I don't have that anymore but they are still present in Jeremy's.
> 
> Ian.