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

[Alexander Graf]

On 13.09.2011, at 09:51, Avi Kivity wrote:

> On 09/13/2011 09:54 AM, Alexander Graf wrote:
>> >
>> >  I had similar problems with sun4u, fixed with
>> >  f69539b14bdba7a5cd22e1f4bed439b476b17286. I think also here, PCI
>> >  should be given a memory range at 0x80000000 and VGA should
>> >  automatically use that like.
>> 
>> Yeah, usually the ISA bus is behind an ISA-PCI bridge, so it should inherit 
>> the offset from its parent. Or do you mean something different?
>> 
> 
> He means that isa_mem_base should go away; instead isa_address_space() should 
> be a subregion at offset 0x80000000.

So we are talking about the same thing. Logically speaking, ISA devices are 
behind the ISA-PCI bridge, so the parent would be the bridge, right?

> Which vga variant are you using?

This is stdvga.


Alex