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Re: [Xen-ia64-devel] Re: PATCH: salinfo emulation

On Fri, 2006-03-31 at 17:00 +0100, Tristan Gingold wrote:
> Le Vendredi 31 Mars 2006 17:49, Alex Williamson a écrit :
> > On Fri, 2006-03-31 at 14:11 +0100, Tristan Gingold wrote:
> > > Hi,
> > >
> > > this implements a dummy emulation of SAL INFO: the info is always empty.
> > > At least salinfod can run with that!
> >
> >    Is there any reason dom0 shouldn't have real access to
> > SAL_GET_STATE_INFO, SAL_GET_STATE_INFO_SIZE, and SAL_CLEAR_STATE_INFO?
> > From a manageability perspective, there's important data in there,
> > someone needs to be able to retrieve it.  I think what you have is
> > probably appropriate for domU access.  Thanks,
> I forgot to ask for more comments...
> 
> Are SAL INFO per cpu informations ?
> If yes, we are in trouble to only allow dom0.
> If no, you are correct.

   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

-- 
Alex Williamson                             HP Linux & Open Source Lab


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