Re: [Xen-devel] About IO

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 3/4/07 02:57, "Liu, Huahang" <huahang.liu@xxxxxxxxx> wrote:

> Basically, I am interested about the following address:
> 0xFFFE0000 to 0xFFFF0000
> 
> I want to know is there already any handlers for this area.
> 
> If yes, where is the handler and what does it do?

There's no MMIO that close to the 4GB boundary. The last handler is at
0xfee00000, for the virtual IO-APIC.

> If no, how to add one?

See numerous examples (e.g., vlapic.c , vioapic.c) for how to add a handler
inside Xen.

 -- Keir



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