RE: [Xen-devel] Re: [Patch 1/3]RAS(Part II)--Intel MCA enalbing in XEN

["Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>]

xen-devel-bounces@xxxxxxxxxxxxxxxxxxx <> wrote:
> Seconded.
> 
> With Wei Huangs 1GB patch support, one question comes to my mind
> regarding the page offline support / recovery action:
> 
> How does the interface deal with different page sizes ?
> IMO we should only offline the smallest possible unit of the
> page in error,
> which is 4KB. So larger pages (2MB, 1GB) must be splitted in that case.
> 
> Christoph

Christoph, I think this is two story. How to offline a page is a specific 
recover action method, instead of the MCA itself. Or I missed anything?

For guest owned page offline caused by #MC, Xen can't do anything but mark it 
(the page frame, 4k) pending, so that when it is freed, it will not be accessed 
anymore. 
It will depends on the real recover action to make sure it will not be accessed 
by guest anymore. For example, inject a vMC to guest, so that guest can do 
offline itself, or kill the domain directly in some situation. 

Or do I missed anything?

Thanks
Yunhong Jiang

> 
> 
> On Friday 20 March 2009 09:51:24 Keir Fraser wrote:
>> These changes need an ack from Sun.
>> 
>>  -- Keir
>> 
>> On 20/03/2009 05:03, "Ke, Liping" <liping.ke@xxxxxxxxx> wrote:
>>> Hi, Keir
>>> 
>>> This patch is the basic MCA enabling support for Intel.
>>> 
>>> For implementation details, please refer to the discussion thread:
>>> 
> http://lists.xensource.com/archives/html/xen-devel/2009-02/msg0
> 0509.html
>>> 
>>> 
>>> Thanks& Regards,
>>> Criping
> 
> 
> 
> --
> ---to satisfy European Law for business letters:
> Advanced Micro Devices GmbH
> Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
> Geschaeftsfuehrer: Jochen Polster, Thomas M. McCoy, Giuliano Meroni
> Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
> Registergericht Muenchen, HRB Nr. 43632
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel