5.1beta2 on Alpha ES40 w/ 32GB pys ram

[Jeff Roberson]

On Wed, 4 Jun 2003, Andrew Gallatin wrote:

>
>
> Andrea Cocito writes:
>  > Hallo,
>  >
>  > I have a little (??) problem trying to boot FreeBSD 5.1beta2
>  > on an ES40 with 32 gigs of  physical RAM, this is the status:
>  >
>
> You have to limit physical memory to 2GB or less.  Otherwise, DMAs
> won't work.
>
> Drew

Is this because we dont program the TLB on the DMA controller?  I heard
rumors that sparc64 has code to handle all of this for their chipsets.  If
they have the infrastructure it may not be hard to port.