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

[Avi Kivity]

On 05/19/2011 07:32 PM, Anthony Liguori wrote:
> > Think of how a window manager folds windows with priorities onto a flat
> > framebuffer.
> >
> > You do a depth-first walk of the tree. For each child list, you iterate
> > it from the lowest to highest priority, allowing later subregions
> > override earlier subregions.
>
>
> Okay, but this doesn't explain how you'll let RAM override the VGA 
> mapping since RAM is not represented in the same child list as VGA 
> (RAM is a child of the PMC whereas VGA is a child of ISA/PCI, both of 
> which are at least one level removed from the PMC).

VGA will override RAM.

Memory controller
 |
 +-- RAM container (prio 0)
 |
 +-- PCI container (prio 1)
      |
      +--- vga window


--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.