hi:
 
The system call obviously must be annulled in the host kernel.
what is annulled is the sysem call of UML kernel or host kernel?
At last ,the handle dealing with the system call is from guest OS or host OS?
If guest OS is linux-2.6.18 and host OS is linux-2.6.22, what is annulled is linux-2.6.22
and what is run finally is linux-2.6.18,or on the contray?
 
thanks very much.
 
 
Also
I want to know wherever in TT mode or SKAS mode,does tracing thread is always running
in the host kernel?
 
thanks very much