Re: [Xen-devel] How Xen process the system calls issued by applications running in a guest os

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Xen doesn't process them at all. The syscall trap causes the processor
to directly start executing guest-OS code --- Xen is not involved. If
you want to 'hook' application syscalls then this direct trap to guest
OS can be disabled, in which case syscall traps will pass via
do_general_protection_fault() in xen/arch/x86/traps.c.

 -- Keir

> I am a newbie to Xen, please give me some basic idea and LET ME KNOW WHICH
> SOURCE CODE FILE maps to this procedure so that I can study the details.
> Thanks a lot!
> 
> Xin
> 
> 
> 
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