Re: [Qemu-devel] [PATCH 2/2] q35: add cpu hotplug support

[Paolo Bonzini]

Il 21/08/2013 13:01, Gerd Hoffmann ha scritto:
>   Hi,
> 
>> +#define ICH9_PROC_BASE 0xaf00
>> +#define ICH9_PROC_LEN 32
> 
> No, please don't.  It makes it impossible to assign the 0xa000 -> 0xafff
> I/O port window to a PCI bridge.  Please lets stop occupy random io
> ports above 0x1000 and burn I/O address space that way.
> 
> I'd suggest to place it at 0x0a00 instead.  Also the dsdt should get a
> device with the address in _CRS so the guest knows those ports are used.

Would this use 0x0A ("not present, device functional, decoding
resources") for _STA to "indicate a valid device for which no device
driver should be loaded" (quoting from the ACPI spec)?  Hopefully this
prevents Windows from showing the UI.

Paolo