Bumping up.
Can somebody give me some pointers. Would help me a lot. Thanks,
Ranjith
On Tue, Jul 16, 2013 at 1:34 AM, ranjith krishnan <ranjithkrishnan1@xxxxxxxxx> wrote:
Hello,I was posting a couple weeks back here, asking questions about getting DomUs working in Xen when installing Xen from source.Well, I have managed to get things working. Currently my setup is like this now.Xen 4.2.2, installed from source,Fedora 18 Dom0 x86_64, Debian 6 PV DomU x86_64, and Ubuntu 12.04 HVM DomU x86_64.My processor has Intel VT-X enabled.I used xl/xm to create DomUs. I was unable to get virt-manager working to create guests.I faced a similar problem with Xen 4.1 and Fedora 17 earlier.As the next step in my project, I want to log some system call information.Basically, every time a system call is made in my PV DomU, I just want to print a line like "System call made from DomU, systemcall id = xx". That is all I need for now.I have some questions regarding the same.1. This might be a stupid question, but here goes.After I modify source code, should I do the whole compilation/install process to see my changes.ie. should i do "make and install xen, tools and stubdom" or will "make and install xen" suffice ?2. How is the system call flow happening in Xen?Where in the code is the system call being intercepted by the hypervisor for a PV DomU. ?I found some information from this paper, http://hal.archives-ouvertes.fr/docs/00/43/10/31/PDF/Technical_Report_Syscall_Interception.pdfbut still am not clear about the whole picture.Is there documentation available explaining for how system calls are handled in Xen ?The Xen code is quite large, and I am sorry to say I get lost reading it without some kind of knowledge.3. How to log data?I see printk statements in the code. Are printk statements tied to a certain logging level ? Should I add "loglvl=all guest_loglvl=all" to my Dom0 grub to see the output from printk statements ?Also, which output file should I be seeing for my scenario?/var/log/xen/xend.log ?I apologize for the long email.
Please take some time out and kindly reply.--
Ranjith krishnan
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Ranjith krishnan
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