From: Brian Gerst <bgerst@didntduck.org>
To: "Jonathan M. McCune" <jonmccune@cmu.edu>
Cc: 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 16:36:57 -0400 [thread overview]
Message-ID: <434C2269.5090209@didntduck.org> (raw)
In-Reply-To: <434C1D60.2090901@cmu.edu>
Jonathan M. McCune wrote:
> Hello,
>
> We're starting work on a project for the 32-bit x86 Linux kernel that
> involves using segmentation in the kernel. As a first effort, we'd
> like to adjust the kernel code and data segment descriptors so that
> the kernel code, and data segment, bss, heap and stack exist in linear
> address range between 3GB and 4 GB. How could we implment this so that
> it breaks the memory management subsystem the least (or not at all if
> we are lucky ;-))?
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.
--
Brian Gerst
next prev parent reply other threads:[~2005-10-11 20:35 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 [this message]
2005-10-11 20:24 ` Alon Bar-Lev
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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