Hi,

This is a list of what I've learned so far about UML.

I'm simply posting this so that it gets into the archive and may help
other people.

If any experts see anything wrong, please post a correction...

1. UML is great.  Thanks to Jeff and BlaisorBlade and everyone
   else involved.
   
2. The site http://user-mode-linux.sourceforge.net is essential, but
   a lot of information is out of date and therefore either wrong
   for later kernels or just confusing.   The following points list
   specific things in relation to this.
   Take what you read with a "grain of salt".
   
3. Recent kernels (from which version???) *do not* need a UML patch
   to compile and run as a guest.  Briefly, "make ... ARCH=um"
   is the important part when compiling and kernel.
   
4. Recent kernels run SKAS0 by default, SKAS3 if the host
   kernel has support for it.  The boot log *no longer* tells
   you what mode it is running.  You can force "tt" mode
   if you want when you start the UML kernel: "mode=tt" option.
   
5. If you run certain distributions on your host, you may find
   it *very* hard or impossible to find a SKAS3 patch
   from http://www.user-mode-linux.org/~blaisorblade/patches/
   that will patch the kernel to allow SKAS3 mode in your guests.
   For example, my host is Centos 4.4, which is a
   2.6.9.who-knows-what-else kernel (i.e. Centos do back-ports
   from later kernels without updating the .9).  I have
   tried almost every SKAS3 patch and cannot find
   any that will patch the kernel source.
   So, I'm running SKAS0, the default, for now...

-- 
Best regards,
 Russell                          mailto:[EMAIL PROTECTED]

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