> Jürgen 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/testing.
User emulation has three main advantages for our purposes:

- It's significantly faster than full system emulation, especially when the 
target system would be using an NFSroot.

- It doesn't rely on a target kernel. These frequently have bugs, especially 
on the less popular architectures..

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

The main downside is that threaded applications don't currently work properly, 
but that's fixable.

Paul


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