<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Nov 6, 2013, at 3:05 PM, Srivatsan Varadarajan <<a href="mailto:srivatsan3290@gmail.com">srivatsan3290@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Hi,<div><br></div><div>Kindly help me in resolving this issue.</div><div><br></div><div>Thanks</div><div>Srivatsan Varadarajan<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Srivatsan Varadarajan</b> <span dir="ltr"><<a href="mailto:srivatsan3290@gmail.com">srivatsan3290@gmail.com</a>></span><br>
Date: Wed, Nov 6, 2013 at 1:33 PM<br>Subject: LITMUS installation error in Virtual box<br>To: <a href="mailto:litmus-dev@lists.litmus-rt.org">litmus-dev@lists.litmus-rt.org</a><br><br><br><div dir="ltr">Hi,<div><br></div>
<div>I am a newbie to Linux Kernel patching. I am doing project on "Comparison of Various RT Schedulers" for which i downloaded LITMUS RT, patched it as per the instructions, and compiled the Kernel in Virtual box.</div>
<div><br></div><div>However, when i restart the Linux OS in virtualbox, I am getting Kernel panic error. Please find attached the screenshot. </div><div><br></div><div>Kindly help me in resolving this issue.</div><div><br>
</div><div>Thanks and Regards</div><span class="HOEnZb"><font color="#888888">Srivatsan Varadarajan</font></span></div>
</div><br></div></div>
<span><ubuntu_kernel panic.png></span>_______________________________________________<br>litmus-dev mailing list<br><a href="mailto:litmus-dev@lists.litmus-rt.org">litmus-dev@lists.litmus-rt.org</a><br>https://lists.litmus-rt.org/listinfo/litmus-dev<br></blockquote></div><div><br></div><br><div>I think I remember a question to the mailing list about this problem on VirtualBox before, but I can’t find it in the archive. In the kernel configuration LITMUS^RT > Performance Enhancements, deselect “Local Migration Affinity”. I believe this will disable the offending code. It’s not an ideal solution, but it may get you started in a virtualized environment. Please be aware that you can use a virtual environment to test and debug Litmus, but real-time performance will be spotty due to inaccurate timers and reliance upon the scheduling of the virtual machine. You could also try Litmus out in KVM/Qemu (we use KVM/Qemu all the time).</div><div><br></div><div>-Glenn</div></body></html>