Re: [kvm-devel] KVM and Prempt?
-Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Avi Kivity Gesendet: Monday, October 22, 2007 9:40 AM An: Back, Michael (ext) Cc: kvm-devel@lists.sourceforge.net Betreff: Re: [kvm-devel] KVM and Prempt? Back, Michael (ext) wrote: -Ursprüngliche Nachricht- Von: Gregory Haskins [mailto:[EMAIL PROTECTED] Gesendet: Friday, October 19, 2007 5:27 PM An: Back, Michael (ext) Cc: kvm-devel@lists.sourceforge.net Betreff: Re: AW: [kvm-devel] KVM and Prempt? On Fri, 2007-10-19 at 16:17 +0200, Back, Michael (ext) wrote: Are you referring to the -rt patch? Yes, I take the patch from http://www.kernel.org/pub/linux/kernel/projects/rt/ Ah, yes. There were problems in the past with running KVM on -rt if you have the full kit enabled. Its possible they are still not fixed. I had patches to address this issue for an older KVM and had it up and running on a full PREEMPT_RT kernel, but they have become quite stale at this point. I will be picking up this work again sometime in the near future, so watch this space. Are you building KVM as a module from the -rt tree, or as an external module? I use a external module, last try was kvm-46! Make sure CONFIG_PREEMPT_NOTIFIER is selected in your .config. You'll have to adjust Kconfig or select the in-tree kvm for that. Is there a possibility to check, if CONFIG_PREEMPT_NOTIFIER correct selected and compiled in the kernel/modules? - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] KVM and Prempt?
Back, Michael (ext) wrote: Make sure CONFIG_PREEMPT_NOTIFIER is selected in your .config. You'll have to adjust Kconfig or select the in-tree kvm for that. Is there a possibility to check, if CONFIG_PREEMPT_NOTIFIER correct selected and compiled in the kernel/modules? The external module code checks CONFIG_PREEMPT_NOTIFIER, and emulates preempt notifiers if not present in the host kernel. But the preempt notifier emulation has not been tested with -rt and may be broken there. -- error compiling committee.c: too many arguments to function - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] KVM and Prempt?
On Fri, 2007-10-19 at 16:17 +0200, Back, Michael (ext) wrote: Are you referring to the -rt patch? Yes, I take the patch from http://www.kernel.org/pub/linux/kernel/projects/rt/ Ah, yes. There were problems in the past with running KVM on -rt if you have the full kit enabled. Its possible they are still not fixed. I had patches to address this issue for an older KVM and had it up and running on a full PREEMPT_RT kernel, but they have become quite stale at this point. I will be picking up this work again sometime in the near future, so watch this space. Are you building KVM as a module from the -rt tree, or as an external module? -Greg signature.asc Description: This is a digitally signed message part - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] KVM and Prempt?
2.6.31.1 should be 2.6.23.1 - sorry _ Von: Back, Michael (ext) Gesendet: Friday, October 19, 2007 3:16 PM An: 'kvm-devel@lists.sourceforge.net' Betreff: KVM and Prempt? Hallo, I tried to run Windows XP with KVM on Linux 2.6.31.1 on a AMD Opteron and on a Intel Xeon, on both it works fine! After this test I patch the kernel with the current prempt-patch and on both it doesn't works! - After a very short time - I could see the windows startup screen - the complied system froze! Has someone ever tried to do the same and it works? Or will KVM with Windows on a prempt kernel - never work? - maybe work in the future? - should now work but this .. and this ... should be done and consider? With best regards, Michael Back # ASTRUM IT GmbH Michael Back Dipl.-Ing. Univ. software engineer Projectmanagement Am Wolfsmantel 46 91058 Erlangen, Germany Tel.: +49 (91 31) 94 08 - 374 Fax: +49 (91 31) 94 08 - 108 mailto:HYPERLINK mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] mailto:HYPERLINK contact address by Siemens Siemens AG Medical Solutions MED MRZ Allee am Roethelheimpark 2 91052 Erlangen, Germany Tel.: +49 (9131) 84-5307 Fax: +49 (9131) 84-8767 mailto:HYPERLINK mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] mailto:HYPERLINK Siemens Aktiengesellschaft: Chairman of the Supervisory Board: Gerhard Cromme; Managing Board: Peter Loescher, Chairman, President and Chief Executive Officer; Heinrich Hiesinger, Joe Kaeser, Rudi Lamprecht, Eduardo Montes, Juergen Radomski, Erich R. Reinhardt, Hermann Requardt, Uriel J. Sharef, Peter Y. Solmssen, Klaus Wucherer; Registered offices: Berlin and Munich; Commercial registries: Berlin Charlottenburg, HRB 12300, Munich, HRB 6684; WEEE-Reg.-No. DE 23691322 - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] KVM and Prempt?
Hi Michael, On Fri, 2007-10-19 at 15:32 +0200, Back, Michael (ext) wrote: 2.6.31.1 should be 2.6.23.1 - sorry _ Von:Back, Michael (ext) Gesendet: Friday, October 19, 2007 3:16 PM An: 'kvm-devel@lists.sourceforge.net' Betreff:KVM and Prempt? Hallo, I tried to run Windows XP with KVM on Linux 2.6.31.1 on a AMD Opteron and on a Intel Xeon, on both it works fine! After this test I patch the kernel with the current prempt-patch and on both it doesn't works! Are you referring to the -rt patch? - After a very short time - I could see the windows startup screen - the complied system froze! Has someone ever tried to do the same and it works? Or will KVM with Windows on a prempt kernel - never work? - maybe work in the future? - should now work but this .. and this … should be done and consider? With best regards, Michael Back # ASTRUM IT GmbH Michael Back Dipl.-Ing. Univ. software engineer Projectmanagement Am Wolfsmantel 46 91058 Erlangen, Germany Tel.: +49 (91 31) 94 08 - 374 Fax: +49 (91 31) 94 08 - 108 mailto:HYPERLINK mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] contact address by Siemens Siemens AG Medical Solutions MED MRZ Allee am Roethelheimpark 2 91052 Erlangen, Germany Tel.: +49 (9131) 84-5307 Fax: +49 (9131) 84-8767 mailto:HYPERLINK mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] Siemens Aktiengesellschaft: Chairman of the Supervisory Board: Gerhard Cromme; Managing Board: Peter Loescher, Chairman, President and Chief Executive Officer; Heinrich Hiesinger, Joe Kaeser, Rudi Lamprecht, Eduardo Montes, Juergen Radomski, Erich R. Reinhardt, Hermann Requardt, Uriel J. Sharef, Peter Y. Solmssen, Klaus Wucherer; Registered offices: Berlin and Munich; Commercial registries: Berlin Charlottenburg, HRB 12300, Munich, HRB 6684; WEEE-Reg.-No. DE 23691322 - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel signature.asc Description: This is a digitally signed message part - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
