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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] Qemu - where will it go?
Date: Mon, 16 Jan 2006 15:48:04 +0000
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To: qemu-devel@nongnu.org

> J=C3=BCrgen has stated his desired functionality already. What other "main
> uses" are there? (Asked in the hope of further sparking the discussion ;)

I use the usermode emulation fairly extensively for cross development/testi=
ng.
User emulation has three main advantages for our purposes:

=2D It's significantly faster than full system emulation, especially when t=
he=20
target system would be using an NFSroot.

=2D It doesn't rely on a target kernel. These frequently have bugs, especia=
lly=20
on the less popular architectures..

=2D It's much easier to integrate into test harnesses. With binfmt_misc it'=
s=20
mostly transparent. For full system emulation you have to mess about with=20
telnet/rsh.

The main downside is that threaded applications don't currently work proper=
ly,=20
but that's fixable.

Paul