Subject: Re: SMP re-entrancy in kernel drivers/"bottom half?"
To: Jason Thorpe <thorpej@shagadelic.org>
From: Charles M. Hannum <abuse@spamalicious.com>
List: tech-kern
Date: 02/22/2005 23:41:44
On Tuesday 22 February 2005 23:35, Jason Thorpe wrote:
> On Feb 22, 2005, at 1:46 PM, Kentaro A. Kurahone wrote:
> > I was sort of eyeing LRP (http://www.cs.rice.edu/CS/Systems/LRP/)
> > as something to look into.  After other code I have in progress
> > stabilises though.
>
> I looked at LRP a number of years ago (back in my NASA days).  I came
> to the conclusion that is has some fundamental flaws, but I now can't
> recall off the top of my head what they were.

IIRC, LRP has a really problematic denial-of-service scenario.  You have to be 
very careful about livelock with it.