Re: GART_IOMMU without AGP

From: Pavel Vasilyev
Date: Wed Jul 22 2009 - 19:16:02 EST


On Thursday 23 July 2009 02:17:38 you wrote:
> On Wed, 22 Jul 2009 17:37:46 -0400
>
> Dave Jones <davej@xxxxxxxxxx> wrote:
> > On Wed, Jul 22, 2009 at 07:26:49PM +0400, Pavel Vasilyev wrote:
> > > In the kernel configuration, if I choose x86_64 and PCI, then choose
> > > the item "Garth IOMMU support", which, in turn, chooses not to switch
> > > off, support for AGP. But many IOMMU system does not have AGP bus.
> >
> > The lack of AGP slots doesn't mean a lack of AGP bus.
> > It's part of the K8 on-CPU northbridge.
>
> And the user is selecting CONFIG_AGP to select AGP devices rather than to
> demonstrate their deep guru grade knowledge of K8 northbridges. Not only
> that but CONFIG_AGP controls the display of AGP video card options so it
> is a selection for offered devices not really an internal detail.
>
> So I think Pavel is right here.


May be next logic

IF ( GART_IOMMU == TRUE )
THEN
IF ( AGP == TRUE )
THEN
AGP_AMD64 = TRUE;
FI
FI

Now

IF ( GART_IOMMU == TRUE )
THEN
AGP = TRUE;'
AGP_AMD64 = TURE;
FI


And in bytes is

-rw-r--r-- 1 root root 54322 Jul 23 01:21 agpgart.ko
-rw-r--r-- 1 root root 19745 Jil 23 01:21 amd64-agp.ko

is 74067 bytes :)

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