Subject: Re: bge on amd64
To: Thor Lancelot Simon <>
From: Chuck Silvers <>
List: tech-kern
Date: 08/28/2005 18:51:55
On Sun, Aug 28, 2005 at 04:34:02PM -0400, Thor Lancelot Simon wrote:
> On Sun, Aug 28, 2005 at 09:09:56AM -0700, Chuck Silvers wrote:
> > hi,
> > 
> > I recently got an amd64 box and discovered that the built-in bge
> > doesn't work (all received packets are garbage, though transmitted
> > packets appear to be fine).  the problem is caused by some of the
> > host memory having physical addresses larger than 4 GB...
> You might want to check the BIOS settings on the machine for "IOMMU mode"
> or "remap addresses > 4GB" or something like that.  I don't know exactly
> what these do on amd64 -- I can guess, but I don't _know_ -- but since
> you shouldn't need them, it's probably best to leave them off.

I tried disabling the option that sounded like that, which made all the
RAM that appeared appear below 4GB, but 768MB didn't appear anywhere.
I'll stick with the original setting and the wm card until bge is fixed.