Subject: Re: compartmentalization of kernel memory
To: Kamal R Prasad <>
From: Matt Thomas <>
List: tech-kern
Date: 04/03/2003 21:17:07
At 08:57 PM 4/3/2003, Kamal R Prasad wrote:
>  if a null pointer access takes place (inside the kernel), the entire
>kernel memory is suspect.

It depends on the architecture.  PowerPC is difficult to protect due to
the need for exception code from 0x0100-0x2fff.  Most others do the right

Matt Thomas               Internet:
3am Software Foundry      WWW URL:
Cupertino, CA             Disclaimer: I avow all knowledge of this message