Hi,
I have a question regarding system call implementation on
Linux
In order to execute the system call in user space, the process is made
to execute the system call switch on its kernel stack
Why this is done... ?
Also UML queues a signal ( SIGUSR ) to the process in order to make it
run on its kernel stack... is this the only reason why UML queue system
call ?
I think by ptracing itself UML will come to know when the system ended
so that it can fill in the system_ call retrun value to the process
context.
Please let me know...
Thanks a lot.
Thanks,
Abhi
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