lkml.org 
[lkml]   [2012]   [Apr]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform
Date
Luck, Tony wrote:
>> Because, if you'd hooked into it, just imagine one fine day, when we
>> remove mcelog support, what screaming the xen people will be doing
>> when mcelog doesn't work anymore.
>
> Agreed. Even before we get to deleting mcelog, "struct mce" can
> change (new fields could be added) ... and you don't want to have
> your hypervisor to have to know which version of Linux it is talking
> to.
>

Hmm, adding new fields block neither native nor xen -- xen just ignore new added fields, that would be no problem for xen:
/* Fields are zero when not available */
struct mce {
...
}
and, hypervisor only record error into its mc_info cookie (in its own format), it doesn't care what's dom0's version and how dom0 translate it -- that's dom0's business. The role of hypervisor is virtual 'platform', just like h/w platform don't care what linux version runs over it.


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

\
 
 \ /
  Last update: 2012-04-23 17:47    [from the cache]
©2003-2011 Jasper Spaans