RE: [Xen-devel] SATA detect fails on ICH7 chipset / DellPoweredgeSC430

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> ide controller appears with memory range febffc00-febfffff 
> pci bus memory range for above is f4000000 - febfffff
> tg3 eth is at exact same address as linux video controller 
> ec.. ef.. is at exact same address as linux

Interesting. So, Windows trusts the BIOS but Linux feels the need to go
in there and monkey around.
 
> I noted that under linux we get the boot message:
> Allocating PCI resources starting at 40000000 (gap: 
> 40000000:b0000000) and ide controller appears at 40000000... 
> but not ethernet or video, they stay at the same old 
> addresses. 

OK, this is a definite bug in Xen that we can fix -- this is the first
time we've come across a system where Linux tries remapping things, and
it should be done with machine addresses, not psuedo physical addresses.
Quite why Linux decides to mess with this device is a mystery...

Ian

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