On Mon, Oct 05, 2015 at 02:05:22PM +0530, Bharata B Rao wrote: > 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 + Igor's patchset applied. > > This has been very lightly tested and intention is to get feedback > on the correctness aspect of this. > > Bharata B Rao (2): > spapr: Accommadate alignment gaps in hotplug memory region > spapr: Force gaps between DIMM's GPA
PC needs this, PPC needs this ... I don't see why would this not apply everywhere. Isn't it time we just converted everyone? Drop the gap flag, set it unconditionally for new machine types. Thoughts? > hw/ppc/spapr.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > -- > 2.1.0 >
