From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mukesh Rathor <mukesh.rathor@oracle.com>
Subject: Re: [Xen-devel] [PATCH V2 1/7]: PVH: basic and header changes,
 elfnote changes, ...
Date: Fri, 12 Oct 2012 14:22:04 -0700
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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On Fri, 12 Oct 2012 09:48:48 +0100
Ian Campbell <Ian.Campbell@citrix.com> wrote:

> > index fdce49c..9323b8c 100644
> > --- a/arch/x86/xen/Kconfig
> > +++ b/arch/x86/xen/Kconfig
> > @@ -50,3 +50,13 @@ config XEN_DEBUG_FS
> >  	  Enable statistics output and various tuning options in
> > debugfs. Enabling this option may incur a significant performance
> > overhead. 
> > +config XEN_X86_PVH
> > +	bool "Support for running as a PVH guest (EXPERIMENTAL)"
> > +	depends on X86_64 && XEN && INTEL_IOMMU && EXPERIMENTAL
> 
> OOI why does the kernel side require an INTEL_IOMMU? I can see why the
> hypervisor would need it but the guests (including dom0) can't
> actually see the underlying IOMMU, can they?

Well, the kernel requires the hypervisor to have it, but I guess
thats not what this is referring to. The tools can decide that.
I'll take it out.