[Qemu-devel] [PATCH v4 0/6] Refactoring pc_dimm_plug and NUMA node lookup API

[Bharata B Rao]

Hi,

Here is the v4 of the patchset that refactors pc_dimm_plug and adds
an API to lookup NUMA node by address.

- Refactoring pc_dimm_plug() helps other architectures like PowerPC
  to make use of common code.
- API to lookup NUMA node id by address is required to support memory
  hotplug on PowerPC sPAPR guests.

In addition to pc_dimm_plug() reorganization and NUMA node lookup
API, this patchset also carries a patch to abort when
HotplugHandlerClass::plug() fails for pc machine.

The patchset that adds memory hotplug support to PowerPC sPAPR which
was posted at
http://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg06574.html
depends on this patchset.

Changes in v4:
-------------
- Ensure memory range information is stored in node_info[0] for
  non-NUMA configurations. (5/6)
- Ensure numa_get_node() API looks up the given address in node 0
  for non-NUMA configurations. (6/6)

In addition the following changes based on Igor's review:

- hhc->plug() shouldn't fail for PC arch, hence don't try to recover
  by calling pc_dimm_memory_unplug(). (2/6)
- Use pc_dimm_memory_unplug() from pc_dimm_unplug(). (2/6)
- Add a patch to use error_abort in hhc->plug(). (3/6)
- Store exact address range (start, end and not end+1) in numa_info
  and modify the lookup logic accordingly. (4/6, 6/6)

v3: http://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg06768.html
v2: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg05157.html
v1: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg03212.html
v0: https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg01078.html

Bharata B Rao (6):
  pc,pc-dimm: Extract hotplug related fields in PCMachineState to a
    structure
  pc,pc-dimm: Factor out reusable parts in pc_dimm_plug to a separate
    routine
  pc: Abort if HotplugHandlerClass::plug() fails
  numa,pc-dimm: Store pc-dimm memory information in numa_info
  numa: Store boot memory address range in node_info
  numa: API to lookup NUMA node by address

 hw/i386/acpi-build.c     |  2 +-
 hw/i386/pc.c             | 84 +++++++------------------------------------
 hw/mem/pc-dimm.c         | 84 +++++++++++++++++++++++++++++++++++++++++++
 include/hw/i386/pc.h     |  7 ++--
 include/hw/mem/pc-dimm.h | 15 ++++++++
 include/sysemu/numa.h    | 11 ++++++
 numa.c                   | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 219 insertions(+), 78 deletions(-)

-- 
2.1.0