[Xen-ia64-devel] SAL INFO virtualization

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Vendredi 31 Mars 2006 18:58, Alex Williamson a écrit :
>    Yes, SAL_GET_STATE_INFO may retrieve data per CPU.  CMCs are often
> per CPU info, and CPEs may return different data based on the CPU.  To
> retrieve all the logs, we need to query on each CPU.  Certainly throws a
> kink in letting dom0 manage them...  Thanks,
>
>       Alex
I am not an expert on SAL mca/error/info.  Here I speak about accessing to 
machine error records.

I do not plan to work on this issue immediatly.  Because I have slightly 
touched it, I am writing a few propositions I have in mind.  Unless an easy 
solution comes, I think this is future work.

Here are 3 propositions:

1) Only dom0 has access to error records.  Therefore, dom0 should run on every 
CPUs.

2) Xen merges all error records to dom0 cpu 0.  According to SAL specs, it 
seems possible, since all CPU error logs have lid.

3) Xen creates a new interface to access error records.  The linux driver must 
be modified for Xen.

Comments are welcome.

Tristan.


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