From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>
Date: Thu, 22 Jan 2015 09:42:24 -0500
Message-ID: <20150122144224.GK30245@csclub.uwaterloo.ca>
References: <1537147.Wm9AbiuW5D@soho>
 <20150122075429.GI16075@hermes.click-hack.org>
 <2769633.cTWk055Sma@soho>
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Subject: Re: [Xenomai] Xenomai-3 booting problems
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To: Leopold Palomo-Avellaneda <leo@alaxarxa.net>
Cc: xenomai@xenomai.org

On Thu, Jan 22, 2015 at 09:34:11AM +0100, Leopold Palomo-Avellaneda wrote:
> El Dijous, 22 de gener de 2015, a les 08:54:29, Gilles Chanteperdrix va 
> escriure:
> > On Thu, Jan 22, 2015 at 08:47:24AM +0100, Leopold Palomo-Avellaneda wrote:
> > > Hi,
> > > 
> > > 
> > > I have compiling a Cobalt kernel. I have followed the web "wikipress"
> > > [1];-) recommendations. However, my box (a normal desktop computer - Dell
> > > Optiplex 7010 -) doesn't boot. It throws a message like:
> > > ....
> > > timer doesn't work through interrup-remapped IO-apic
> > > 
> > > ...
> > > 
> > > enabling noapic in the boot options I'm able to boot. But, I have not make
> > > any test by now. Some interesting messages:
> > > 
> > > $ dmesg | grep -i xenomai
> > > [    0.000000] Linux version 3.16.0-xenomai-3.0.0 (root@soho) (gcc version
> > > 4.9.1 (Debian 4.9.1-19) ) #1 SMP Wed Jan 21 16:29:36 UTC 2015
> > > [    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.16.0-xenomai-3.0.0
> > > root=UUID=15cfac82-1127-421f-9aed-eaf48247ed4e ro quiet noapic
> > > [    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.16.0-
> > > xenomai-3.0.0 root=UUID=15cfac82-1127-421f-9aed-eaf48247ed4e ro quiet
> > > noapic [    0.705071] [Xenomai] scheduling class idle registered.
> > > [    0.705072] [Xenomai] scheduling class rt registered.
> > > [    0.705090] [Xenomai] disabling automatic C1E state promotion on Intel
> > > processor
> > > [    0.705104] [Xenomai] SMI-enabled chipset found, but SMI workaround
> > > disabled
> > > 
> > >           (see xenomai.smi parameter). You might encounter
> > > 
> > > [    0.705284] I-pipe: head domain Xenomai registered.
> > > [    0.717986] [Xenomai] Cobalt v3.0-rc2 (Exact Zero) [DEBUG]
> > > [    0.897726] usb usb1: Manufacturer: Linux 3.16.0-xenomai-3.0.0 xhci_hcd
> > > [    0.898617] usb usb2: Manufacturer: Linux 3.16.0-xenomai-3.0.0 xhci_hcd
> > > [    0.914114] usb usb3: Manufacturer: Linux 3.16.0-xenomai-3.0.0 ehci_hcd
> > > [    0.930109] usb usb4: Manufacturer: Linux 3.16.0-xenomai-3.0.0 ehci_hcd
> > > *** RTnet for Xenomai v3.0-rc2 ***
> > > 
> > > 
> > > So, can avoid to pass the noapic parameter to the kernel to boot?
> > 
> > Please post the full boot logs, and the kernel configuration. 
> 
> Attached.
> 
> 
> > Does the
> > kernel work with exactly the same .config but without Xenomai? 
> 
> I don't know. It's a similar kernel configuration than debian ships with 
> jessie.
> 
> > Is
> > CONFIG_SMP enabled? Because if CONFIG_SMP is enabled, Xenomai will
> > not work without an APIC.
> 
> Yes, CONFIG_SMP=y and CONFIG_X86_IO_APIC=y

But your kernel commandline included 'quiet noapic' in the above, which
would turn of apic use even if the config could use it.

-- 
Len Sorensen