From: Wolfgang Mauerer <wolfgang.mauerer@domain.hid>
To: Philippe Gerum <rpm@xenomai.org>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>,
Jan Kiszka <jan.kiszka@domain.hid>
Subject: Re: [Xenomai-help] help with xenomai-2.5.0 on pure64bit linux x86_64
Date: Fri, 12 Feb 2010 09:50:14 +0100 [thread overview]
Message-ID: <4B751646.8070203@domain.hid> (raw)
In-Reply-To: <1265928949.7538.3.camel@domain.hid>
Philippe Gerum wrote:
> On Thu, 2010-02-11 at 18:15 +0100, Wolfgang Mauerer wrote:
>> Philippe Gerum wrote:
>>> On Sun, 2010-01-31 at 14:42 +0100, Jan Kiszka wrote:
>>>> Philippe Gerum wrote:
>>>>> On Sun, 2010-01-31 at 14:25 +0100, Jan Kiszka wrote:
>>>>>> Philippe Gerum wrote:
>>>>>>> On Sun, 2010-01-31 at 13:37 +0100, Jan Kiszka wrote:
>>>>>>>> lux-integ wrote:
>>>>>>>>> Greetings
>>>>>>>>>
>>>>>>>>> I am new to xenomai and I am attempting to install a RT-kernel on a pure
>>>>>>>>> 64-bit (not multilib) amd64 linux setup. The machine has a Sempron CPU and
>>>>>>>>> 2 GBytes of RAM. The distribution is cross-lfs compiled from sources. This
>>>>>>>>> is what I have done:-
>>>>>>>>>
>>>>>>>>> a) I fetched fresh kernel2.6.32.2 source-code and placed it
>>>>>>>>> in /usr/src/linux like so:-
>>>>>>>>> `linux' -> `linux-2.6.32.2'
>>>>>>>>>
>>>>>>>>> b) ..I then applied the xenomai patch as such:-
>>>>>>>>> $SOURCES/xenomai-2.5.0/scripts/prepare-kernel.sh --linux=/usr/src/linux --adeos=$SOURCES/xenomai-2.5.0/ksrc/arch/x86/patches/adeos-ipipe-2.6.32.2-x86-2.5-00.patch --arch=x86_64
>>> <snip>
>>>
>>>>>>> This is likely our old friend CONFIG_SPARSE_IRQ which is at work. Just
>>>>>>> disable this, until we have introduced the required changes to support
>>>>>>> more than 1024 IRQs.
>>>>>> If that is true, then please include a simple "depends on !CONFIG_IPIPE"
>>>>>> in the x86 patch for the meantime.
>>>>>>
>>>>> No. Work to lift this limitation is in progress here.
>>>> That's even nicer (if 'lift' means removing any limitation of
>>>> CONFIG_NR_CPUS).
>>>>
>>>> Jan
>>>>
>>> Could someone gives this patch a go, with CONFIG_SPARSE_IRQ on (or some
>>> unreasonable number of CPUs in 64bit mode, whichever comes first)?
>>>
>>> http://download.gna.org/adeos/patches/v2.6/x86/adeos-ipipe-2.6.32.7-x86-2.6-00.patch
>> boots (and seems to work fine after a rather short test) w/o Xenomai and
>> the attached .config (SPARSE_IRQ, NR_CPUS=512). With Xenomai is compiled
>> in, it reboots right after registering the Xenomai domain with ipipe -
>> see the attached console logs. Did not dig any deeper so far.
>> The test was done on qemu 0.10.50 (-cpu core2duo, KVM)
>>
>
> Thanks for testing. You need to run this patch over 2.5.1 when enabling
> SPARSE_IRQ. Was it the case?
yes - Wolfgang
next prev parent reply other threads:[~2010-02-12 8:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 21:04 [Xenomai-help] help with xenomai-2.5.0 on pure64bit linux x86_64 lux-integ
2010-01-31 10:25 ` Gilles Chanteperdrix
2010-01-31 12:37 ` Jan Kiszka
2010-01-31 13:22 ` Philippe Gerum
2010-01-31 13:25 ` Jan Kiszka
2010-01-31 13:35 ` Philippe Gerum
2010-01-31 13:42 ` Jan Kiszka
2010-01-31 14:01 ` Philippe Gerum
2010-02-04 10:46 ` Philippe Gerum
2010-02-11 17:15 ` Wolfgang Mauerer
2010-02-11 22:55 ` Philippe Gerum
2010-02-12 8:50 ` Wolfgang Mauerer [this message]
2010-02-12 9:48 ` Jan Kiszka
2010-02-17 11:40 ` lux-integ
2010-02-17 13:19 ` Philippe Gerum
2010-01-31 14:26 ` lux-integ
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