Re: [Xen-devel] Proposal for init/kexec/hotplug format for Xen

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 27 Feb 2005, at 15:25, Anthony Liguori wrote:

> > I like the idea of bringing out device discovery, bringup, teardown, 
> > recovery all into its own driver or subsystem -- it seems the obvious 
> > way to go. But I think the 'device tree' should be in the 
> > to-be-designed persistent store, and we publish an interface to allow 
> > guests to peek/poke that store.
> I think publishing domain-information in an OF-like tree would be 
> great.
> I think we want the persistent store to be outside the OF-tree though. 
>  It would provide a good buffer against ill-written management apps.
> The way I envision this working is to have a persistent store in 
> user-space on a priviledged domain that exported within it's tree the 
> OF device-tree.  This way management app information (the domain's 
> name, an icon associated with it, etc.) would not be stored in the OF 
> tree.  If you needed to blow away a portion of the store because of an 
> misbehaving management app you do not lose any of the vital device 
> information.
So you agree that the device info ought to reside within the persistent 
store? I certainly wasn't suggesting that the persistent store exists 
within the device tree -- I don't think that statement even makes sense 
(device tree is per-domain; persistent store is global).
 -- Keir



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