* [Qemu-devel] MMU
@ 2003-06-27 13:00 Thomas Glanzmann
2003-06-27 14:03 ` Johan Rydberg
2003-06-27 14:40 ` Fabrice Bellard
0 siblings, 2 replies; 4+ messages in thread
From: Thomas Glanzmann @ 2003-06-27 13:00 UTC (permalink / raw)
To: QEMU Devel
What is the future direction of the 'software MMU'? Do you want to make
the diff to the original Linux kernel in FIXADDRTOP and co unnecessary?
So that it is possible to run a unmodified 'binary' kernel?
Gruesse,
Thomas
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] MMU
2003-06-27 13:00 [Qemu-devel] MMU Thomas Glanzmann
@ 2003-06-27 14:03 ` Johan Rydberg
2003-06-27 14:54 ` Thomas Glanzmann
2003-06-27 14:40 ` Fabrice Bellard
1 sibling, 1 reply; 4+ messages in thread
From: Johan Rydberg @ 2003-06-27 14:03 UTC (permalink / raw)
To: qemu-devel
Thomas Glanzmann <sithglan@stud.uni-erlangen.de> wrote:
: What is the future direction of the 'software MMU'? Do you want to make
: the diff to the original Linux kernel in FIXADDRTOP and co unnecessary?
: So that it is possible to run a unmodified 'binary' kernel?
I can not really speak for Fabrice, but with a software MMU there would
be no need for any modifications to the Linux kernel. You would expect
a slowdown between ~1.2 and ~3 (estimated values), though.
--
Johan Rydberg, Free Software Developer, Sweden
http://rtmk.sf.net | http://www.nongnu.org/guss/
Playing Queens of the Stone Age - regular john
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] MMU
2003-06-27 13:00 [Qemu-devel] MMU Thomas Glanzmann
2003-06-27 14:03 ` Johan Rydberg
@ 2003-06-27 14:40 ` Fabrice Bellard
1 sibling, 0 replies; 4+ messages in thread
From: Fabrice Bellard @ 2003-06-27 14:40 UTC (permalink / raw)
To: qemu-devel
Thomas Glanzmann wrote:
> What is the future direction of the 'software MMU'? Do you want to make
> the diff to the original Linux kernel in FIXADDRTOP and co unnecessary?
>
> So that it is possible to run a unmodified 'binary' kernel?
Yes, the software MMU will enable the use of unmodified Linux kernels
(and other OSes), at the expense of a slower emulation (benchmarks show
a slowdown of a factor 2).
Fabrice.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] MMU
2003-06-27 14:03 ` Johan Rydberg
@ 2003-06-27 14:54 ` Thomas Glanzmann
0 siblings, 0 replies; 4+ messages in thread
From: Thomas Glanzmann @ 2003-06-27 14:54 UTC (permalink / raw)
To: qemu-devel
> I can not really speak for Fabrice, but with a software MMU there would
> be no need for any modifications to the Linux kernel. You would expect
> a slowdown between ~1.2 and ~3 (estimated values), though.
That sound really good. Next step could be to let windows run. :-)
Greetings,
Thomas
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2003-06-27 15:02 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2003-06-27 13:00 [Qemu-devel] MMU Thomas Glanzmann
2003-06-27 14:03 ` Johan Rydberg
2003-06-27 14:54 ` Thomas Glanzmann
2003-06-27 14:40 ` Fabrice Bellard
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