From: "Min Lee" <min.lee@gatech.edu>
To: xen-devel@lists.xensource.com
Subject: [Q] guest system call doesn't do do_iret() ?
Date: Wed, 5 Dec 2007 23:22:51 -0500 [thread overview]
Message-ID: <001901c837bf$abf4af80$0e00a8c0@MiniT61> (raw)
Hello.
Basically I'd like to intercept guest's (of course, Linux) system call
entry/exit,
so I've commented out fast path and I could intercept 'int 0x80' calls,
and I expected every system call should call xen's do_iret() , i.e,
HYPERVISOR_iret, but it doesn't seem that they call it !
Any idea or comments? What am I missing here?
If the guest doesn't use HYPERVISOR_iret, how do they return to userland?
Thanks in advance.
Min
next reply other threads:[~2007-12-06 4:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-06 4:22 Min Lee [this message]
[not found] ` <ec55b17e0712070753q3677a610y5a4a252e967268da@mail.gmail.com>
2007-12-07 19:36 ` [Q] guest system call doesn't do do_iret() ? Min Lee
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