Subject: Re: Patch for two mbuf dma optimizations
To: Jaromir Dolecek <>
From: Jason Thorpe <>
List: tech-kern
Date: 03/29/2003 14:25:15
On Saturday, March 29, 2003, at 01:58  PM, Jaromir Dolecek wrote:

> And vax 512 bytes IIRC. Why does sun2 2k pages and not 8k as the rest
> of m68k ports?

VAX has a 512 byte hardware page, but the VAX low-level VM code 
presents 4K pages to the rest of the system.

The Sun2 is not really binary-compatible with the other m68k ports, so 
it's not really necessary for it to use the same 8K page size (esp. 
when you consider the 16MB VM limit on the Sun2 address space).

         -- Jason R. Thorpe <>