Re: [Xen-devel] [PATCH 03/07] HVM firmware passthrough: hvmloader init module support

[Ross Philipson <Ross.Philipson@xxxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell
> Sent: Wednesday, April 04, 2012 5:51 AM
> To: Tim (Xen.org)
> Cc: Ross Philipson; xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] [PATCH 03/07] HVM firmware passthrough:
> hvmloader init module support
> 
> On Wed, 2012-04-04 at 10:47 +0100, Tim Deegan wrote:
> [...]
> > > In fact, it looks like that ASM block deliberately zeroes ecx and
> > > edx so how does this work?
> >
> > The asm header clears them after calling main().
> 
> So it does, I didn't realise that the "go" button in hvmloader was
> return from main, subtle!
> 
> [...]
> > In any case, this all goes away if the module info is passed in
> xenstore.
> 
> Yes.
> 
> Ian.
> 

I mainly did it this way as a first approach since I was not sure how to use 
xenstore with libxc etc. I figured this would be called out for critique 
anyway. But, as noted, it is no longer an issue.

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