Re: [uml-user] UML with PIN

[Richard W. <ric...@gm...>]

On Wed, May 28, 2014 at 10:39 PM, Nalli, Sanketh <san...@hp...> wrote:
> Hey,
>
> Has anyone successfully tried running UML with PIN attached to it ?

I have never used this tool.
If you want to debug the UML kernel you need to teach your debugger
that it has to
ignore SIGSEGV. UML is using this signal for page faults.

> https://software.intel.com/en-us/articles/pin-a-dynamic-binary-instrumentation-tool
>
>
>
> Also, can you explain the output of ps –e, after I run UML :
>
> 1256 pts/7    00:00:00 linux
>
> 1266 pts/7    00:00:00 linux
>
> 1267 pts/7    00:00:00 linux
>
> 1268 pts/7    00:00:00 linux
>
> 1269 pts/7    00:00:00 linux
>
>
>
> Why are there these many processes ?

Every UML guest process has a twin on the host side.
Actually it is a thread (not a pthread).

> What is a good resource to understand UML better ?

The source. :-)
Feel free to ask if you have questions.

-- 
Thanks,
//richard