Hello all, I have successfully installed xen 3.0.2 on a dual celeron system. Linux in dom0 works fine. Now, I would like to play with the mini-os (my ultimate goal is to implement a small RTOS as guest in Xen, so mini-os looks like an ideal starting point). However, I can''t seem to get it to run as (I think) it should: It boots up, but as far as I understand the source code and the README, it should continue by printing the current time in regular intervals, which it does not. Here is the output I receive: ---------------------------------- Xen Minimal OS! start_info: c001d000 nr_pages: 8192 shared_inf: 00be3000 pt_base: c0020000 mod_start: 0x0 mod_len: 0 flags: 0x0 cmd_line: MM: Init _text: c0000000 _etext: c0009577 _edata: c000a604 stack start: c0011e40 _end: c00142a4 start_pfn: 25 max_pfn: 2000 Mapping memory range 0xc0400000 - 0xc2000000 MM: Initialise page allocator for c002c000(2c000)-c2000000(2000000) MM: done Initialising timer interface Initialising console ... done. Initialising scheduler, idle_thread 00000000 Thread "Idle": pointer: 0xc002d00c, stack: 0xc002e000 Thread "init_xs": pointer: 0xc002d034, stack: 0xc0030000 Thread "xenstore": pointer: 0xc002d05c, stack: 0xc0032000 Xenbus initialised. Thread "init_xs" exited. -------------------------------- I have inserted some debug printk''s into do_hypervisor_callback() to see whether any callbacks are made at all. According to this, a vtimer interrupt does happen, but only every 10 seconds, which -as I guess- is far less frequent than it should be (The timer handler prints out the current time for every 1000th timer event, so it would take almost three hours before the first message ist printed). Also interesting is that whenever I hit a key on the keyboard, a timer interrupt is pending. It looks like the interrupt is somehow not "connected/enabled". Does anyone have an idea what to do? Cheers Rob P.S.: BTW, I have also tried to use the mini-os in from xen-untested. That one looks very different, but, alas, it does not even compile... _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 7/17/06, Robert Kaiser (FH) <kaiser@informatik.fh-wiesbaden.de> wrote:> Hello all, > > I have successfully installed xen 3.0.2 on a dual celeron system. Linux in > dom0 works fine. Now, I would like to play with the mini-os (my ultimate goal > is to implement a small RTOS as guest in Xen, so mini-os looks like an ideal > starting point).Sounds interesting, but mabye xen-devel is more appropriate for such questions. I can imageine that it will not be possible to have realtime functionality in a xen domU because the OS inside doesn''t have full control for giving processes priority to exceute, there is also the xen layer that decides which domU has priority. Henning _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Am Montag, 17. Juli 2006 19:02 schrieb Henning Sprang:> On 7/17/06, Robert Kaiser (FH) <kaiser@informatik.fh-wiesbaden.de> wrote: > > Hello all, > > > > I have successfully installed xen 3.0.2 on a dual celeron system. Linux > > in dom0 works fine. Now, I would like to play with the mini-os (my > > ultimate goal is to implement a small RTOS as guest in Xen, so mini-os > > looks like an ideal starting point). > > Sounds interesting, but mabye xen-devel is more appropriate for such > questions.I''m a bit reluctant as, so far, this is mainly a user question.> > I can imageine that it will not be possible to have realtime > functionality in a xen domU because the OS inside doesn''t have full > control for giving processes priority to exceute, there is also the > xen layer that decides which domU has priority.Yes. My _real_ _ultimate_ goal is to examine Xen''s scheduling strategies wrt real-time applicabiltiy and, possibly to devise and test new strategies that might be better suited for real-time. Anyway, so far, I am in the process of "firing up my test environment" and I am a little stuck here. I would really appreciate some help getting the mini-os to work. Rob _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 7/17/06, Robert Kaiser (FH) <kaiser@informatik.fh-wiesbaden.de> wrote:> [...] > > Sounds interesting, but mabye xen-devel is more appropriate for such > > questions. > > I''m a bit reluctant as, so far, this is mainly a user question.I don''t think many xen end-users know about this mini-OS. Henning _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users