> > > 	I am writing a memory based database for a routing appliance. I hope to 
> > > keep this database completely in the kernel memory space. I wanted to know 
> > > if and how i can use > 1GB memory within the kernel (I have 3GB physmem). 
> > > Various attempts to tweak 
> > 
> > why you need >1GB in KERNEL?
> 
> I'd think the material you quoted states that pretty clearly.

if it's some routing appliance i assume it's routing table. 
what routing table needs 1GB. even if you do static table like 1 byte.
per /24 network if would be 16MB 

if not routing - why in kernel?