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From: Marcel Apfelbaum <marcel.a@redhat.com>
Date: Tue, 24 Sep 2013 14:41:34 +0300
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Subject: Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: QEMU Developers <qemu-devel@nongnu.org>, Anthony Liguori <anthony@codemonkey.ws>, "Michael S. Tsirkin" <mst@redhat.com>

On Tue, 2013-09-24 at 20:21 +0900, Peter Maydell wrote:
> On 24 September 2013 20:17, Marcel Apfelbaum <marcel.a@redhat.com> wrote:
> > I was suggesting an algorithm to find the MA device in order
> > to set MA Received Bit in its Status(Sec_Status) register.
> >
> > The algorithm was to traverse the PCI buses for finding the
> > MA device using the transaction address.
> 
> Yes. My point is that if you have an algorithm phrased as
> "dynamically traverse some hierarchy using an address
> to find something" then you can rephrase it as "statically
> construct a hierarchy of memory regions and then just
> query it with the address".
I got it, thanks.
You mean that instead of traveling on the PCI buses, I could
query the PCI address space and find the MemoryRegion corresponding
with the address, then look for the owner.

Thank you, I'll try it.
Marcel
  
> 
> -- PMM
>