Re: 12GB RAM with DfBSD?

["Thomas E. Spanjaard" <tgen@xxxxxxxxxxxxx>]

Filip Wuytack wrote:
> Emiel Kollof wrote:
> > On Wednesday 07 September 2005 11:22, Filip Wuytack wrote:
> > > But I was wondering before I start playing around if DF can address 
> > > the full  12GB at all in it's current  state?
> > AFAICR, DragonFly doesn't do PAE, so more than 4 GB won't be 
> > addressable. I don't know of any plans to implement PAE though. It's 
> > kind of a bitch to do for IA32. It also doesn't do 64-bit long mode 
> > yet, but if we did, 12GB would be perfectly okay :)
> Do know when DragonFly would support 64-bit? Can DF easily be ported to 
> AMD64 (have any of the changes the DF team to their 4.x FBSD kernel made 
> this step more trivial) or does it come down to a full rewrite of DF for 
> 64bit?

As Matthew Dillon is getting more AMD64 machines, chances are he and 
Hiten Pandya will commence porting soon. There are obviously enough 
valid references to look at (FreeBSD/amd64, NetBSD/amd64), and a lot can 
be adapted from the i386 code, as the architectures aren't that much of 
a difference. It's going to be easier than porting to macppc, to say the 
least.

Also, PAE won't be implemented due to it not being worth the effort when 
compared to 64bit architectures. Even the PAE homestay, the Xeon, has 
turned to a 64bit addressing- and datapath.

Cheers,
--
		-- Thomas E. Spanjaard
		   tgen@xxxxxxxxxxxxx

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