Re: [Qemu-devel] [RFC] Memory API

[Anthony Liguori]

On 05/20/2011 11:43 AM, Olivier Galibert wrote:
> On Fri, May 20, 2011 at 09:51:41AM -0500, Anthony Liguori wrote:
> > Is there a use-case for a priority above 1 and if so, what does it mean?
>
> In a modern northbridge mmconfig has priority over external access,
> and other internal registers (apic for instance) have priority over
> mmconfig.  Bios sometimes map mmconfig is a zone colliding with
> something else but where it doesn't really care because the whole
> range is not needed.

But priority and registration order are roughly equivalent though for 
things like this, no?

And the question is, "how do I control what order to register in?" is 
equivalent to the question, "how do I determine which region gets which 
priority?".

Both have an answer of, something has to understand all of the regions 
that may overlap and assign an explicit order/priority.

Regards,

Anthony Liguori

>    OG.