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

[Anthony Liguori]

On 05/19/2011 08:30 AM, Avi Kivity wrote:
> On 05/19/2011 04:26 PM, Jan Kiszka wrote:
> > On 2011-05-19 15:07, Avi Kivity wrote:

> > And when introducing hierarchical registration, we will have to go
> > through all of this once again. Plus the API may have to be changed
> > again if it does not fulfill all requirements of the hierarchical region
> > management. And we have no proof that it allows an efficient core
> > implementation.
>
> This API *is* hierarchical registration. v2 will (hopefully) prove that
> it can be done efficiently.

We also need hierarchical dispatch.  Priorities are just a weak attempt 
to emulate hierarchical dispatch but I don't think there's an 
improvement over a single dispatch table.

Hierarchical dispatch is simpler.  You just need a simple list at each bus.

I don't see a strong need to tie anything to qdev here FWIW.

Regards,

Anthony Liguori