RE: [Xen-users] MCE in Xen kernels

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Robert Hulme
> Sent: 17 May 2007 12:47
> To: Xen-users
> Subject: [Xen-users] MCE in Xen kernels
> 
> AFAICT: X86_MCE Depends on: !X86_64_XEN && EMBEDDED
> 
> Is there any way to have MCE in a 64 bit Xen kernel? I am worried I
> might be having memory errors and would like MCE turned on to check.

Well, you can't just enable the X86_MCE on it's own, as it won't work
without further changes to the hypervisor: The hypervisor doesn't allow
writes to MSR's, which is how the Machine Check features are set up by
the kernel. There will also be no useful information from the hypervisor
apart from "fatal error: machine check". 

One of my collegues, Christoph Egger in Dresden, is working on getting
MCE support into the hypervisor, but I don't think he's got anything
that will work right now - I've CC'd him, so he may be able to give more
info (but I think it's a public holiday in Germany today, so perhaps it
will not happen today). 

--
Mats
> 
> -Rob
> 
> -- 
> http://www.robhulme.com/
> http://robhu.livejournal.com/
> 
> The most important thing in the programming language is the name. A
> language will not succeed without a good name. I have recently
> invented a very good name and now I am looking for a suitable
> language.
> -- Donald Knuth
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 
> 
> 



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users