[Qemu-devel] [RFC 0/3] Draft implementation of HPT resizing (qemu side)

[David Gibson <david@gibson.dropbear.id.au>]

Here is a draft qemu implementation of my proposed PAPR extension for
allowing runtime resizing of a KVM/ppc64 guest's hash page table.
That in turn will allow for more flexible memory hotplug.

This should work with the guest kernel side patches I also posted
recently [1].

Still required to make this into a full implementation:
  * Guest needs to auto-resize HPT on memory hotplug events

  * qemu needs to allocate HPT size based on current rather than
    maximum memory if the guest is HPT resize aware

  * KVM host side implementation

  * PAPR standardization


[1] http://thread.gmane.org/gmane.linux.ports.ppc.embedded/90392

David Gibson (3):
  pseries: Stub hypercalls for HPT resizing
  pseries: Implement HPT resizing
  pseries: Advertise HPT resize capability

 hw/ppc/spapr.c          |   5 +-
 hw/ppc/spapr_hcall.c    | 331 ++++++++++++++++++++++++++++++++++++++++++++++++
 include/hw/ppc/spapr.h  |   9 +-
 target-ppc/mmu-hash64.h |   4 +
 trace-events            |   2 +
 5 files changed, 348 insertions(+), 3 deletions(-)

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2.5.0