[Qemu-devel] [PATCH 0/9] pc: do not create invalid MADT.LAPIC/Processor entries

[Igor Mammedov]

It's mostly clean up series that removes invalid CPU
entries from MADT/DSDT/SRAT tables when APIC IDs are
sparse distributed*.
Series also removes intermediate present CPUs bitmap
in ACPI tables generation code, replacing it with
machine reported presence status or if not possible*
with directly querying CPU for presence. That should
help later for consolidating and sharing CPU hotplug
codebase and extending supported CPU count above 256
on ACPI side, where I'm going to replace current
"not scalable" bitmap based CPU hotplug MMIO interface
with memory-hotplug like one, which could easily
scale and provide additional info for ACPI CPU device
objects.

Series depends on cotextual changes in following post:
    '[PATCH 0/3] merge SSDT into DSDT'
    https://www.mail-archive.com/address@hidden/msg347960.html

* example topology with sparse APIC IDs:
  -smp X,sockets=2,cores=3,maxcpus=6

* it's not possible to remove notion of apic_ad_limit
  since guest visible interfaces like CPU hoptlug MMIO
  (CPON array in ACPI + corresponding MMIO in QEMU) and
  FWCFG should stay the same for compat reasons with
  current setups and legacy SeaBIOS.

Igor Mammedov (9):
  cpu: rename cpu_exists() to qemu_get_cpu_by_arch_id()
  machine: introduce MachineClass.possible_cpu_arch_ids() hook
  pc: acpi: cleanup qdev_get_machine() calls
  pc: acpi: SRAT: create only valid processor lapic entries
  pc: acpi: create Processor and Notify objects only for valid lapics
  pc: acpi: create MADT.lapic entries only for valid lapics
  pc: acpi: drop not needed intermediate bitmap cpu->found_cpus
  pc: move apic_id_limit to PCMachineState
  pc: acpi: clarify why possible LAPIC entries must be present in MADT

 hw/i386/acpi-build.c | 138 ++++++++++++++++++++++++++-------------------------
 hw/i386/pc.c         |  67 ++++++++++++++-----------
 include/hw/boards.h  |  18 +++++++
 include/hw/i386/pc.h |   4 +-
 include/qom/cpu.h    |  10 ++--
 qom/cpu.c            |   6 +--
 target-i386/cpu.c    |   2 +-
 7 files changed, 138 insertions(+), 107 deletions(-)

-- 
1.8.3.1