Re: [PATCH] x86, aperture: Check for GART before accessing GART registers

Jörg-Volker Peetz
2015-04-14T18:23:07Z

Hi,

Borislav Petkov wrote on 04/14/2015 13:33:
> On Tue, Apr 14, 2015 at 01:15:43PM +0200, Jörg-Volker Peetz wrote:
>> Hi,
>
> Hi,
>
> please do not top-post.
>
>> tried this patch on my HP Pavilion notebook wiht AMD Phenom II processor. The
>> BIOS has no IOMMU option.
>> With this patch I'm still seeing the AGP messages mention in the patch description.
>> Is this processor affected at all?
>
> Your CPU has an AGP bridge but the BIOS doesn't leave an aperture so the
> kernel has to do it. Read the message.
>
>> /proc/cpuinfo says "cpu family" 16. That is 10h?
>
> Yes.
>

thank you for the explanation. Somehow I thought I had a newer CPU w/o GART
registers, but I misread the patch. Maybe wishful thinking, in the hope to save
64 MB :-(
Sorry for the noise.
--
Regards,
jvp.