Re: [Xenomai] Kernel 2.6.37.6 + Xenomai 2.5.6 is ok, but with Xenomai 2.6.1 it won't boot

[Henri Roosen <henriroosen@gmail.com>]

On Wed, Oct 3, 2012 at 5:08 PM, Philippe Gerum <rpm@xenomai.org> wrote:
> On 10/03/2012 04:38 PM, Henri Roosen wrote:
>> On Wed, Oct 3, 2012 at 10:18 AM, Gilles Chanteperdrix
>> <gilles.chanteperdrix@xenomai.org> wrote:
>>> On 10/03/2012 09:26 AM, Jari Lietzen wrote:
>>>> 27.09.2012 21:20, Gilles Chanteperdrix kirjoitti:
>>>>> On 09/27/2012 05:47 PM, Jari Lietzen wrote:
>>>>>
>>>>>> 27.09.2012 10:46, Gilles Chanteperdrix kirjoitti:
>>>>>>> On 09/27/2012 07:49 AM, Jari Lietzen wrote:
>>>>>>>
>>>>>>>> 27.09.2012 00:30, Gilles Chanteperdrix kirjoitti:
>>>>>>>>> On 09/24/2012 09:09 PM, Jari Lietzen wrote:
>>>>>>>>>
>>>>>>>>>> Hi!
>>>>>>>>>>
>>>>>>>>>> Kernel 2.6.37.6 and Xenomai 2.5.6 boots ok, though displaying the error
>>>>>>>>>> message: "MP-BIOS bug: 8254 timer not connected to IO-APIC".
>>>>>>>>>>
>>>>>>>>>> If I try to use Xenomai 2.6.1 the error message displayed is the same
>>>>>>>>>> and system just hangs after that. No other messages, keyboard doesn't
>>>>>>>>>> work, nothing. I started with the same kernel configuration, but I have
>>>>>>>>>> disabled a few options more (e.g. syscall auditing, shared interrupt
>>>>>>>>>> support).
>>>>>>>>>>
>>>>>>>>>> I'm using Intel Core 2 Duo processor with Asus P5LD2-VM motherboard.
>>>>>>>>>> Obviously I'm missing something, but I can't figure that out. Here is
>>>>>>>>>> the kernel config file:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> If you use one of the I-pipe patches whih ship with Xenomai 2.6.1, such
>>>>>>>>> as the patch for linux 3.2, do you also have the issue?
>>>>>>>>>
>>>>>>>>
>>>>>>>> Hi!
>>>>>>>>
>>>>>>>> Yes, I have patched the kernel with this:
>>>>>>>> /usr/src/xenomai/scripts/prepare-kernel.sh --arch=x86_64
>>>>>>>> --adeos=/usr/src/xenomai/ksrc/arch/x86/patches/adeos-ipipe-2.6.37.6-x86-2.9-02.patch
>>>>>>>> --linux=/usr/src/linux
>>>>>>>>
>>>>>>>> xenomai being a link to xenomai-2.6.1 -directory. When I switch between
>>>>>>>> Xenomai 2.5.6 and 2.6.1 I remove the whole linux directory and extract
>>>>>>>> it from the source again and change the xenomai link accordingly. With
>>>>>>>> Xenomai 2.5.6 the patching was done with this:
>>>>>>>> /usr/src/xenomai/scripts/prepare-kernel.sh --arch=x86_64
>>>>>>>> --adeos=/usr/src/xenomai/ksrc/arch/x86/patches/adeos-ipipe-2.6.37-x86-2.9-00.patch
>>>>>>>>     --linux=/usr/src/linux
>>>>>>>
>>>>>>>
>>>>>>> So, could you try Xenoami 2.5.6 with the 2.9-02 patch, or 2.6.1 with the
>>>>>>> 2.9-00 patch, or with the patch for linux 3.2 ?
>>>>>>>
>>>>>>
>>>>>> I booted 2.6.37.6 kernel patched with 2.9-00 patch and compiled Xenomai
>>>>>> 2.6.1 with the following commands:
>>>>>
>>>>>
>>>>> I mean Xenomai 2.6.1 kernel with the 2.9-00 patch or Xenomai 2.5.6
>>>>> kernel with 2.9-00 patch. Since the kernel is not booting, we do not
>>>>> care about the user-space at this point.
>>>>>
>>>>
>>>> I tested again the following combinations. Always starting with a fresh
>>>> kernel tree and patching it:
>>>>
>>>>               2.9-00 patch    2.9-02 patch
>>>> ----------------------------------------------
>>>> Xenomai 2.5.6 OK              OK
>>>>
>>>> Xenomai 2.6.1 boot fails      boot fails
>>>>
>>>>
>>>> Here is a boot log from 2.9-02 patch used with Xenomai 2.6.1 and the
>>>> corresponding kernel .config. I used the same config file for all four
>>>> tests and prepared and compiled the kernel with:
>>>>
>>>> /usr/src/xenomai/scripts/prepare-kernel.sh --arch=x86_64
>>>> --adeos=/usr/src/xenomai/ksrc/arch/x86/patches/adeos-ipipe-2.6.37.6-x86-2.9-02.patch
>>>> --linux=/usr/src/linux
>>>
>>> Ok, this does not match what you originally said, you originally said
>>> the kernel was locking up after the "MP-BIOS bug: 8254 timer not
>>> connected to IO-APIC", something changed between the tests?
>>>
>>> What about my suggestion to try the patch for Linux 3.2 which ships with
>>> Xenomai 2.6.1?
>>>
>>>>
>>>> copy saved configuration to /usr/src/linux/.config
>>>> make xconfig (no changes, but save .config anyway)
>>>> make -j 2
>>>> make modules_install
>>>> make install
>>>>
>>>> I also tested this with Atom D2500 based board, and Xenomai 2.6.1 with
>>>> 2.9-02 patch fails the same way with that too. Changed the processor
>>>> type of course.
>>>
>>> Ok, there are a few things in your configuration I would change:
>>> - enable ACPI, except for ACPI_PROCESSOR
>>> - disable AUDIT_SYSCALL, KPROBES, PERF_EVENTS, OPROFILE, HPET_TIMER
>>> But since the same configuration works with 2.5.6, it should work with
>>> 2.6.1.
>>
>> In order to get the current git tip of Xenomai 2.6 running over
>> non-core ipipe patched kernels I had to apply the attached patch.
>
> diff --git a/include/asm-x86/hal_32.h b/include/asm-x86/hal_32.h
> index 71ffa90..ec5355a 100644
> --- a/include/asm-x86/hal_32.h
> +++ b/include/asm-x86/hal_32.h
> @@ -37,6 +37,8 @@
>  #ifndef _XENO_ASM_X86_HAL_32_H
>  #define _XENO_ASM_X86_HAL_32_H
>
> +#include <asm/xenomai/wrappers.h>
> +
>  #define RTHAL_ARCH_NAME                        "i386"
>  #ifdef CONFIG_IPIPE_CORE
>  # define RTHAL_TIMER_DEVICE            (ipipe_timer_name())
> @@ -53,8 +55,6 @@
>  # define RTHAL_CLOCK_DEVICE            "pit"
>  #endif
>
> -#include <asm/xenomai/wrappers.h>
> -
>  #include <asm-generic/xenomai/hal.h>   /* Read the generic bits. */
>
>  #ifndef CONFIG_X86_WP_WORKS_OK
>
>  Now
>> the code it patches is not in 2.6.1, but it might be related to the
>> same IPIPE_CORE_APIREV checks, which in my opinion are not very clean
>> in the current code.
>
> You are welcome.

Thanks Philippe, your patch fixes the problem too. And in a better way.

I just ran into a similar "2.5.6 working, 2.6.1 not" like described in
this thread, so I thought I'd post it here. However, it might not be
related to the tagged 2.6.1...

>
>
> --
> Philippe.