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Re: [Qemu-devel] [RFC PATCH v3 23/24] spapr: Support ibm, dynamic-reconf
Bharata B Rao
Re: [Qemu-devel] [RFC PATCH v3 23/24] spapr: Support ibm, dynamic-reconfiguration-memory
Wed, 6 May 2015 13:57:50 +0530
On Tue, May 05, 2015 at 05:40:32PM +1000, David Gibson wrote:
> On Fri, Apr 24, 2015 at 12:17:45PM +0530, Bharata B Rao wrote:
> > Parse ibm,architecture.vec table obtained from the guest and enable
> > memory node configuration via ibm,dynamic-reconfiguration-memory if guest
> > supports it. This is in preparation to support memory hotplug for
> > sPAPR guests.
> > This changes the way memory node configuration is done. Currently all
> > memory nodes are built upfront. But after this patch, only address@hidden
> > node
> > for RMA is built upfront. Guest kernel boots with just that and rest of
> > the memory nodes (via address@hidden or ibm,dynamic-reconfiguration-memory)
> > are built when guest does ibm,client-architecture-support call.
> > Note: This patch needs a SLOF enhancement which is already part of
> > upstream SLOF.
> Is it in the SLOF included in the qemu submodule though? If not you
> should have a patch to update the submodule first.
Nikunj confirms that SLOF change needed to support
ibm,dynamic-reconfiguration-memory is already part of QEMU.