From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Gerum In-Reply-To: <46FF78DF.7090104@domain.hid> References: <46F9167F.20008@domain.hid> <1190756271.26427.0.camel@domain.hid> <46FA26ED.4070505@domain.hid> <46FF78DF.7090104@domain.hid> Content-Type: text/plain Date: Sun, 30 Sep 2007 12:52:25 +0200 Message-Id: <1191149545.5989.7.camel@domain.hid> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: Philippe Gerum Subject: Re: [Xenomai-help] Non-APIC setup broken for 2.4-SVN? Reply-To: rpm@xenomai.org List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: xenomai@xenomai.org On Sun, 2007-09-30 at 12:22 +0200, Jan Kiszka wrote: > Jan Kiszka wrote: > > Philippe Gerum wrote: > >> On Tue, 2007-09-25 at 16:09 +0200, Jan Kiszka wrote: > >>> Hi, > >>> > >>> to make it short has anyone or could anyone try latest SVN over kernel > >>> 2.6.20 (i-pipe for 2.6.22 is instable) _without_ LAPIC? It works for me, > >>> but exposes milliseconds of latencies. Same setup with LAPIC enabled is > >>> fine and obviously stable. Before digging into this (time is short > >>> anyway), I would like to exclude problems of my notebook hardware. > >>> > >> Not confirmed here. Everything looks ok. > > > > Yes, I found a second box working fine with a comparable (though not > > identical) config. I suspect some hw issue of my notebook now, but I > > will try to look into this a bit deeper once time permits. > > It was a correlation between trying to use the PIT while Linux fiddled > with the HPET (when HPET is in use, the PIT cannot be programmed). See > my attached warning patch which may prevent others from pulling hairs. > Yes, this one looks better than the previous attempt to prevent HPET +Xenomai globally which would create unwanted situations with x86_64 IIRC. I'll test this, and will probably merge. > > More important is to understand and fix the consistent 2.6.22 issues I > > see. Only works in qemu for me, all real i386 boxes lock up sooner or > > later. :-/ > > I'm on this. Multiple bugs are involved, at least one of them is visible > already with vanilla on my work notebook. Do you work with 2.6.22 baseline, or the latest stable update? > Another one is related to > Xenomai not dealing with the lapic device being in > CLOCK_EVT_MODE_SHUTDOWN whenever the NMI watchdog is in use. Btw, I have a patch for the latest issue we talked about regarding kernel-disabled LAPIC. It changes the generic inner interface a bit for other archs too, so I will commit this asap. > And a third > one only gives me "Detected illicit call from domain Xenomai" before the > box reboots. :( Grmff... Do you run with your smp_processor_id() instrumentation in? > > Jan -- Philippe.