Re: [Qemu-devel] [RFC v1] Add declarations for hierarchical memory region API

[Avi Kivity]

On 05/20/2011 05:46 PM, Anthony Liguori wrote:
> On 05/20/2011 09:40 AM, Richard Henderson wrote:
> > On 05/20/2011 07:31 AM, Anthony Liguori wrote:
> > > But is this a characteristic of devices or is this a characteristic 
> > > of the chipset/CPU?
> >
> > Chipset.
>
> So if the chipset only allows accesses that are 64-bit, then you'll 
> want to have hierarchical dispatch filter non 64-bit accesses and 
> raise an MCE appropriately.
>
> So you don't need anything in MemoryRegion, you need code in the 
> dispatch path.

MemoryRegion *is* the dispatch path.  Only done declaratively so we can 
flatten it whenever it changes.

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