Re: Latest Arndale Xen, dom0 kernel stuck on ASIX mac.

[Julien Grall <julien.grall@linaro.org>]

On 06/07/2013 03:40 PM, Sander Bogaert wrote:

> On 6 June 2013 12:37, Julien Grall <julien.grall@linaro.org> wrote:
>> On 06/06/2013 09:52 AM, Sander Bogaert wrote:
>>
>>
>>>> No luck... I attached the crashing dom0 log.
>>>> Please note I used the  arndale_xen_dom0_defconfig make target
>>>> guessing that's the one you intended to write :-)
>>>>
>>>> This is a different crash however so it did change things...
>>>>
>>>> It seems like the sda drive isn't detected at all? Maybe the driver is
>>>> broke? In the dts I just change root=mmc... into root=/dev/sda1 which
>>>> works for my older kernel/xen versions.
>>
>>
>> [    5.366313] exynos-sata 122f0000.sata: failed to get sata phy for port 0
>>
>> ...
>> [    6.084555] exynos-sata 122f0000.sata: forcing PORTS_IMPL to 0x1
>> [    6.084606] platform 122f0000.sata: Driver exynos-sata requests probe deferral
>> [    6.085869] input: gpio_keys.5 as /devices/gpio_keys.5/input/input0
>> [    6.086535] exynos-sata 122f0000.sata: forcing PORTS_IMPL to 0x1
>> [    6.086584] platform 122f0000.sata: Driver exynos-sata requests probe deferral
>>
>> Could you try the same kernel on bare metal and see what happens?
>>
> 
> all seems to be fine for native Linux, the partitions on the ssd get
> detected so I'm guessing it must be a Xen issue. It's an issue I
> didn't have with older versions... ( end of April ).
> 
> I attached the a log of booting the kernel native. It does have a
> fault at the end but that's because sda5 doesn't exist. I didn't want
> to possibly mess up my working sda1 partition.


Thanks, I think I have found this issue. The i2c tries to register
cpufreq callback. I disabled both cpufreq and cpuidle to avoid specific
board callback.

Could you try this small patch?

===================================================================
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index bcf4e76..3a8cee3 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -299,7 +299,6 @@ static int __init xen_pm_init(void)
         * cpu idle and cpu freq
         */
        disable_cpuidle();
-       disable_cpufreq();

        return 0;
 }
===============================================================

Cheers,

-- 
Julien