Re: [PATCH 1/2] xen/mce: Add mcelog support for Xen platform

From: Konrad Rzeszutek Wilk
Date: Wed Jun 06 2012 - 17:02:34 EST


On Thu, May 31, 2012 at 12:57:44PM +0000, Liu, Jinsong wrote:
> >From 1a7951d6ca01d7f2c9dd2bdb6de5f8e7fdcb8bbd Mon Sep 17 00:00:00 2001
> From: root <root@xxxxxxxxxxxxxxxxxxxxxx>
> Date: Fri, 1 Jun 2012 03:12:51 +0800
> Subject: [PATCH 1/2] xen/mce: Add mcelog support for Xen platform
>
> When MCA error occurs, it would be handled by Xen hypervisor first,
> and then the error information would be sent to initial domain for logging.
>
> This patch gets error information from Xen hypervisor and convert
> Xen format error into Linux format mcelog. This logic is basically
> self-contained, not touching other kernel components.
>
> By using tools like mcelog tool users could read specific error information,
> like what they did under native Linux.
>
> To test follow directions outlined in Documentation/acpi/apei/einj.txt

[ 53.264610] switch: port 1(eth0) entered forwarding state
[ 1058.051938] BUG: sleeping function called from invalid context at /home/konrad/linux/include/linux/kernel.h:199
[ 1058.052066] in_atomic(): 1, irqs_disabled(): 0, pid: 4552, name: mcelog
[ 1058.052130] Pid: 4552, comm: mcelog Tainted: G O 3.5.0-rc1upstream-00041-ga16e594-dirty #2
[ 1058.052235] Call Trace:
[ 1058.052291] [<ffffffff8109ad9a>] __might_sleep+0xda/0x100
[ 1058.052349] [<ffffffff8132a55b>] xen_mce_chrdev_read+0xab/0x140
[ 1058.052408] [<ffffffff81148d85>] vfs_read+0xc5/0x190
[ 1058.052461] [<ffffffff81148f4c>] sys_read+0x4c/0x90
[ 1058.052515] [<ffffffff815bdd79>] system_call_fastpath+0x16/0x1

?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/