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From: =?iso-8859-1?q?Lu=EDs=20Henriques?= 
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To: "Tyler BIRD" <BIRDTY@uvsc.edu>, <adilger@turbolabs.com>
Subject: Re: copy to suer space
Date: Wed, 21 Nov 2001 10:49:43 +0000
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On Tuesday 20 November 2001 07:31 pm, Tyler BIRD wrote:
> What is the other "specifc event that occurs" you could write a spinlock
> and the other thread that causes the event could release that lock
> Of course interrups should be enabled when some thing like this should
> happen Is this other event a interrupt?

The specific event is a breakpoint interrupt: when a specific memory address 
is used (for opcode fetch/read/write) in the addressing space of a process, 
then an exception is raised and a handler for this exception will be called - 
this is my module.

>
>
> There are various ways I'll have to look up when I get home.
> you could alter the cs if you change the vma properties especially the
> permissions properties and you can do this I just don't have the details
> now.
>
> the cs is protected by default
> Tyler
>

-- 
Lu?s Henriques
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