On Mon, May 16, 2005 at 02:52:37PM -0400, Young Koh wrote:
> Suppose the tracee attmpts to invoke a host system call. then, it will
> be intercepted by the tracer as in TT mode. (In TT mode, the tracer
> turns off tracing and sends SIGUSR2 to the tracee, and then, the
> signal handler in the tracee will execute the system call.) but, in
> SKAS mode, because the tracee doesn't have the UML kernel code, only
> the tracer knows about the system call code. The tracer cannot simply
> send a signal to make the tracee execute the system call. Then how
> does it do? Does the tracer execute the system call for the tracee?
The tracer is the kernel, so it just executes the system call.
Jeff
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