[Qemu-devel] [PATCH v2 0/2] Enforce gaps between DIMMs

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

The suggested way to work around the virtio bug reported here

http://lists.nongnu.org/archive/html/qemu-devel/2015-08/msg00522.html

is to introduce gaps between DIMMs. Igor's patchset changes the pc-dimm
auto-address assignment to introduce gaps and ues the same from pc memhp.
This patchset does the same for sPAPR PowerPC.

Before introducing the gap, ensure that memory hotplug region has enough
room for alignment adjustment. We accommodate a max alignment of 256MB for
each slot since sPAPR memory hotplug enforces an alignment requirement of
256MB on RAM size, maxmem and NUMA node mem sizes.

This applies on David's spapr-next branch.

Changes in v2
-------------
- Minor rewording of patch description and code comment in 1/2.

v1: http://lists.nongnu.org/archive/html/qemu-devel/2015-10/msg02414.html
v0: https://lists.gnu.org/archive/html/qemu-devel/2015-10/msg00749.html

Bharata B Rao (2):
  spapr: Accommadate alignment gaps in hotplug memory region
  spapr: Force gaps between DIMM's GPA

 hw/ppc/spapr.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

-- 
2.1.0