* x86-64: Why minimum 64MB aperture?
@ 2005-09-23 8:07 Chuck Ebbert
2005-09-23 14:49 ` Andi Kleen
0 siblings, 1 reply; 2+ messages in thread
From: Chuck Ebbert @ 2005-09-23 8:07 UTC (permalink / raw)
To: Andi Kleen; +Cc: linux-kernel
I get this when I boot:
Checking aperture...
CPU 0: aperture @ 23a8000000 size 32 MB
Aperture from northbridge cpu 0 too small (32 MB)
arch/x86_64/aperture.c says this when aperture is < 64MB.
I have no way of changing this in my BIOS. The systems shares video memory
with RAM. All I can change is the amount of RAM allocated for video (32, 64
or 128 MB, currently set to 64.)
__
Chuck
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: x86-64: Why minimum 64MB aperture?
2005-09-23 8:07 x86-64: Why minimum 64MB aperture? Chuck Ebbert
@ 2005-09-23 14:49 ` Andi Kleen
0 siblings, 0 replies; 2+ messages in thread
From: Andi Kleen @ 2005-09-23 14:49 UTC (permalink / raw)
To: Chuck Ebbert, linux-kernel
On Friday 23 September 2005 10:07, you wrote:
> I get this when I boot:
>
> Checking aperture...
> CPU 0: aperture @ 23a8000000 size 32 MB
> Aperture from northbridge cpu 0 too small (32 MB)
>
>
> arch/x86_64/aperture.c says this when aperture is < 64MB.
>
> I have no way of changing this in my BIOS. The systems shares video memory
> with RAM. All I can change is the amount of RAM allocated for video (32,
> 64 or 128 MB, currently set to 64.)
32MB is too small for IOMMU use. Linux will fix it up for you.
-Andi
^ permalink raw reply [flat|nested] 2+ messages in thread
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