From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Min Lee" Subject: Re: [Q] guest system call doesn't do do_iret() ? Date: Fri, 7 Dec 2007 14:36:29 -0500 Message-ID: <00de01c83908$78efc440$0d00a8c0@MiniT61> References: <001901c837bf$abf4af80$0e00a8c0@MiniT61> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="ISO-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Ashish Bijlani Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Yes, I've tried Dom0's. Does it make difference if I try DomU's? ----- Original Message ----- From: Ashish Bijlani To: Min Lee Sent: Friday, December 07, 2007 10:53 AM Subject: Re: [Xen-devel] [Q] guest system call doesn't do do_iret() ? are you trying to intercept Dom0's system calls? On Dec 5, 2007 11:22 PM, Min Lee wrote: 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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel