Re: lost memory on a 4GB amd64

[Andi Kleen]

Sergei Haller <Sergei.Haller@xxxxxxxxxxxxxxxxxxx> writes:

> the problem is that about 512 MB of that memory is lost (AGP aperture and 
> stuff). Although everything is perfect otherwise.
> As far as I understand, all the PCI/AGP hardware uses the top end of the 
> 4GB address range to access their memory and there is just an 
> "overlapping" of the addresses. thus only the remaining 3.5 GB are 
> available.

It's a BIOS issue. Nothing the kernel can do about it. You are 
talking to the wrong people.

-Andi


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