lkml.org 
[lkml]   [2003]   [Jul]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: The well-factored 386
From
On Mon, Jul 28, 2003 at 08:41:27PM +0100, Jamie Lokier wrote:
> I didn't realise he was talking about an x86 emulator. I thought he
> was analyzing real hardware.
>
> The one thing that made it on-topic for me was his quiet suggestion
> that "forreal" mode interrupts are faster, and that it might, perhaps,
> be possible to modify a Linux kernel to run in that mode - to take
> advantage of the faster interrupts.

That would have to be a kernel for very special use. The "forreal"
mode has protection turned off. As far as I know, that
means any user process can take over the cpu as if
it was running in kernel mode.

Perhaps useful for some embedded use with only a couple well-tested
processes running. Still, a programming error could overwrite
kernel memory instead of segfaulting.

Helge Hafting
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:47    [W:0.079 / U:0.700 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site