Re: [Xen-devel] Kernel crash with acpi_processor, cpu_idle and intel_idle =y

[Mark van Dijk <lists+xen@xxxxxxxxxxxxxx>]

Message 20120731134054.GD4789@xxxxxxxxxxxxxxxxxxx contained:

>Duh! That is easy enough to fix. Mark, can you please try testing with
>this patch (and obviously enable the CONFIG_INTEL_IDLE)
>
>diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
>index d0f59c3..46a9884 100644
>--- a/drivers/idle/intel_idle.c
>+++ b/drivers/idle/intel_idle.c
>@@ -557,7 +557,7 @@ static int __init intel_idle_init(void)
>       retval = cpuidle_register_driver(&intel_idle_driver);
>       if (retval) {
>               printk(KERN_DEBUG PREFIX "intel_idle yielding to %s",
>-                      cpuidle_get_driver()->name);
>+                      cpuidle_get_driver() ?
>cpuidle_get_driver()->name : "none");
>               return retval;
>       }
> 

Good going Jan and Konrad. The above patch works: no more crashes. For
fun I have also tested the patch from my previous email (the link to
the lkml, it has been acked so was worth a try). I tested it in
correlation with your patch and I still see no crashes.



-- 
Stay in touch,
Mark van Dijk.               ,--------------------------------
----------------------------'        Tue Jul 31 22:19 UTC 2012
Today is Pungenday, the 67th day of Confusion in the YOLD 3178

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