From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?= <pasik@iki.fi>
Subject: Re: Linux 3.4 dom0 kernel error loading
 xen-acpi-processor: Input/output error
Date: Thu, 21 Feb 2013 14:42:52 +0200
Message-ID: <20130221124252.GR8912@reaktio.net>
References: <20130221092434.GQ8912@reaktio.net>
	<20130221122913.GC6647@phenom.dumpdata.com>
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To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>, xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org

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 K=E4rkk=E4inen 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.ce=
ntos.alt.x86_64/kernel/drivers/xen/xen-acpi-processor.ko): Input/output err=
or
> > =

> > Using "modprobe -v" doesn't provide any more information about the prob=
lem.
> > 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 v=
ersion) =

> > 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-proc=
essor.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