Re: [Xen-devel] [PATCH 4 of 5] libxl: Add support for passing in the machine's E820 for PCI passthrough

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Apr 08, 2011 at 03:42:48PM +0100, Ian Campbell wrote:
> On Fri, 2011-04-08 at 15:34 +0100, Konrad Rzeszutek Wilk wrote:
> > On Fri, Apr 08, 2011 at 03:25:36PM +0100, Tim Deegan wrote:
> > > 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".
> > > 
> > > > >   We should either do this for all
> > > > > guests or give it its own option (which can default to 1 for guests 
> > > > > with
> > > > > non-empty passthrough lists if you like). 
> > > > 
> > > > Ack, if it's an option it should definitely default to on for non-empty
> > > > pci passthrough lists. I think we can probably get away with default on
> > > > always though and allow it to be explicitly disabled. That's really just
> > > > a case of trying on a few PV OSes and seeing how much they barf...
> > > 
> > > Agreed.  My guess is there won't be any trouble. 
> > 
> > Whoa. I just booted an SLES11 32 bit and it booted so nicely :-)
> > (2.6.27)
> 
> With all of its memory, or did it loose the bits from the holes?

All memory intact.

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