Re: [Xen-devel] Linux 3.4 dom0 kernel error loading xen-acpi-processor: Input/output error

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Feb 21, 2013 at 07:29:13AM -0500, Konrad Rzeszutek Wilk wrote:
> On Thu, Feb 21, 2013 at 11:24:34AM +0200, Pasi Kärkkäinen wrote:
> > Hello,
> > 
> > Does anyone know why loading xen-acpi-processor driver fails like this?:
> > 
> > # modprobe xen-acpi-processor
> > FATAL: Error inserting xen_acpi_processor 
> > (/lib/modules/3.4.32-6.el6.centos.alt.x86_64/kernel/drivers/xen/xen-acpi-processor.ko):
> >  Input/output error
> > 
> > Using "modprobe -v" doesn't provide any more information about the problem.
> > Also there's nothing in dom0 kernel dmesg.
> > 
> > Hardware is Dell R510 server with Intel Xeon 5600 series CPU. 
> > Xen 4.2.1.
> > 
> > Kernel is based on 3.4.32 (so the upstream kernel.org longterm stable 
> > version) 
> > with some additional Xen patches backported from later upstream kernels. 
> > Any tips how to troubleshoot this? 
> 
> Rebuild the module and add this
> diff --git a/drivers/xen/xen-acpi-processor.c 
> b/drivers/xen/xen-acpi-processor.c
> index 316df65..5d824a2 100644
> --- a/drivers/xen/xen-acpi-processor.c
> +++ b/drivers/xen/xen-acpi-processor.c
> @@ -16,6 +16,7 @@
>   * more details.
>   *
>   */
> +#define DEBUG 1
>  
>  #include <linux/cpumask.h>
>  #include <linux/cpufreq.h>
> 
> 
> That should help in figuring it out.
> 

Ok, I'll do that.

Thanks!

-- Pasi


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