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[Xen-devel] question about system call mechanism in xen

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Subject: [Xen-devel] question about system call mechanism in xen
From: "Zang Hongyong" <zanghongyong@xxxxxxxxxx>
Date: 2008年3月17日 22:02:39 +0800
Delivery-date: 2008年3月17日 07:03:22 -0700
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hi,
 I'm interested in system call mechanism in Xen. My understanding (guess) as 
follows.
 1)When user application makes a system call, a "int 80" will occur. 
 2)Then trap to Ring 0 (Which is hypervisor's location). 
 3)Then hypervisor redirect it to Guest OS's kernel to do system call 
operation.
 4)Then back to Ring 0
 5)back to user appliction
 Is that true?
 Where can I get documents about this question in detail?
thanks in advance
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