Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode

[Alexander Graf]

On 14.09.2011, at 09:11, Avi Kivity wrote:

> On 09/13/2011 10:39 PM, Blue Swirl wrote:
>> >
>> >  Here is the problem: Both the vram and the ISA range get mapped into
>> >  system address space, but the former eclipses the latter as it shows up
>> >  earlier in the list and has the same priority. This picture changes with
>> >  the chain-4 alias which has prio 2, thus maps over the vram.
>> >
>> >  It looks to me like the ISA address space is either misplaced at
>> >  0x80000000 or is not supposed to be mapped at all on PPC. Comments?
>> 
>> Since there is no PCI-ISA bridge, ISA address space shouldn't exist.
> 
> Where does the vga device sit then?

On the PCI bus? :)


Alex