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Re: [Qemu-devel] [RFC PATCH 07/15] spapr: enable PHB hotplug for pseries

From: David Gibson
Subject: Re: [Qemu-devel] [RFC PATCH 07/15] spapr: enable PHB hotplug for pseries-2.4
Date: Tue, 5 May 2015 21:35:22 +1000
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, Apr 29, 2015 at 02:20:16PM -0500, Michael Roth wrote:
> Introduce an sPAPRMachineClass sub-class of MachineClass to
> handle sPAPR-specific machine configuration properties.
> The 'dr_phb_enabled' field of that class can be set as
> part of machine-specific init code, and is then propagated
> to sPAPREnvironment to conditionally enable creation of DRC
> objects and device-tree description to facilitate hotplug
> of PHBs.
> Since we can't migrate this state to older machine types,
> default the option to false and only enable it for new
> machine types.
> Signed-off-by: Michael Roth <address@hidden>

This will obviously conflict with Bharata's patch doing much the same
thing for cpu and memory hotplug.

I'll try to put a patch in spapr-next tomorrow which adds an empty
sPAPRMachineClass which you can both then add fields to.

David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!

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