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Re: [Xen-devel] [PATCH 4 of 5] libxl: Add support for passing in the mac

To: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 4 of 5] libxl: Add support for passing in the machine's E820 for PCI passthrough
From: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date: Fri, 8 Apr 2011 17:01:06 +0100
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "keir.fraser@xxxxxxxxxxxxx" <keir.fraser@xxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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Tim Deegan writes ("Re: [Xen-devel] [PATCH 4 of 5] libxl: Add support for 
passing in the machine's E820 for PCI passthrough"):
> At 15:17 +0100 on 08 Apr (1302275848), Ian Campbell wrote:
> > > That's a _horrible_ config syntax.
> > 
> > fair enough. I thought it nicely represented the "has an empty PCI bus"
> > myself...
> 
> Sure, but it's really not obvious that that means "has a memory layout
> that matches the host on which it was last booted".

No, that's what it _does_.  What it _means_ is "please make this
domain work for pci passthrough hotplug", which AIUI is the
circumstance in which it it relevant.

That this has an effect on the guest memory map is an implementation
detail.

Ian.

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