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Re: [Xen-devel] How Xen process the system calls issued by applications

To: Xin Zhao <zhaoxin@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] How Xen process the system calls issued by applications running in a guest os
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: 2004年7月05日 21:18:20 +0100
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Delivery-date: 2004年7月05日 21:19:54 +0100
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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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