From: Alon Bar-Lev <alon.barlev@gmail.com>
To: Brian Gerst <bgerst@didntduck.org>
Cc: "Jonathan M. McCune" <jonmccune@cmu.edu>,
linux-kernel@vger.kernel.org,
Arvind Seshadri <arvinds@cs.cmu.edu>, Bryan Parno <parno@cmu.edu>
Subject: Re: using segmentation in the kernel
Date: Tue, 11 Oct 2005 22:24:46 +0200 [thread overview]
Message-ID: <434C1F8E.6080405@gmail.com> (raw)
In-Reply-To: <434C2269.5090209@didntduck.org>
Brian Gerst wrote:
> Jonathan M. McCune wrote:
>
>> Hello,
>>
> Why send the kernel back to the 2.0 days? There is no valid reason for
> doing this with they way x86 segmentation works, which is why it was
> done away with in 2.1.
>
But with segmentation you can set code to be read-only,
disallow execution from stack, separate modules so that they
will not affect kernel and more...
The main problem with segmentation is that it is x86 specific...
Best Regards,
Alon Bar-Lev.
next prev parent reply other threads:[~2005-10-11 20:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-11 20:15 using segmentation in the kernel Jonathan M. McCune
2005-10-11 20:36 ` Brian Gerst
2005-10-11 20:24 ` Alon Bar-Lev [this message]
2005-10-11 21:12 ` Al Viro
2005-10-11 21:14 ` Brian Gerst
2005-10-12 9:05 ` Arjan van de Ven
2005-10-12 16:07 ` Alan Cox
2005-10-12 15:44 ` Arjan van de Ven
2005-10-12 23:55 ` Jonathan M. McCune
2005-10-12 13:03 ` linux-os (Dick Johnson)
2005-10-13 8:51 ` Denis Vlasenko
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