[PATCH v2 0/7] x86: fix cpu hotplug with secure boot

[Igor Mammedov]

v2:
  - AML: clean is_inserted flag only after SMI callback
  - make x-smi-cpu-hotunplug false by default
  - massage error hint on not supported unplug
v1:
  - fix typos and some phrases (Laszlo)
  - add unplug check (Laszlo)
  - redo AML scan logic to avoid race when adding multiple CPUs

CPU hotplug with Secure Boot was not really supported and firmware wasn't aware
of hotplugged CPUs (which might lead to guest crashes). During 4.2 we introduced
locked SMI handler RAM arrea to make sure that guest OS wasn't able to inject
its own SMI handler and OVMF added initial CPU hotplug support.

This series is QEMU part of that support which lets QMVF tell QEMU that
CPU hotplug with SMI broadcast enabled is supported so that QEMU would be able
to prevent hotplug in case it's not supported and trigger SMI on hotplug when
it's necessary.


Igor Mammedov (7):
  x86: lpc9: let firmware negotiate 'CPU hotplug with SMI' features
  x86: cphp: prevent guest crash on CPU hotplug when broadcast SMI is in
    use
  x86: cpuhp: refuse cpu hot-unplug request earlier if not supported
  acpi: add aml_land() and aml_break() primitives
  tests: acpi: mark to be changed tables in
    bios-tables-test-allowed-diff
  x68: acpi: trigger SMI before sending hotplug Notify event to OSPM
  tests: acpi: update acpi blobs with new AML

 include/hw/acpi/aml-build.h       |   2 +
 include/hw/acpi/cpu.h             |   1 +
 include/hw/i386/ich9.h            |   4 ++
 include/hw/i386/pc.h              |   3 ++
 hw/acpi/aml-build.c               |  16 ++++++
 hw/acpi/cpu.c                     |  80 ++++++++++++++++++++++++++++--
 hw/acpi/ich9.c                    |  24 ++++++++-
 hw/i386/acpi-build.c              |  35 ++++++++++++-
 hw/i386/pc.c                      |  17 ++++++-
 hw/i386/pc_piix.c                 |   1 +
 hw/i386/pc_q35.c                  |   1 +
 hw/isa/lpc_ich9.c                 |  16 ++++++
 tests/data/acpi/pc/DSDT           | Bin 4934 -> 5009 bytes
 tests/data/acpi/pc/DSDT.acpihmat  | Bin 6258 -> 6334 bytes
 tests/data/acpi/pc/DSDT.bridge    | Bin 6793 -> 6868 bytes
 tests/data/acpi/pc/DSDT.cphp      | Bin 5397 -> 5473 bytes
 tests/data/acpi/pc/DSDT.dimmpxm   | Bin 6587 -> 6663 bytes
 tests/data/acpi/pc/DSDT.ipmikcs   | Bin 5006 -> 5081 bytes
 tests/data/acpi/pc/DSDT.memhp     | Bin 6293 -> 6368 bytes
 tests/data/acpi/pc/DSDT.numamem   | Bin 4940 -> 5015 bytes
 tests/data/acpi/q35/DSDT          | Bin 7678 -> 7753 bytes
 tests/data/acpi/q35/DSDT.acpihmat | Bin 9002 -> 9078 bytes
 tests/data/acpi/q35/DSDT.bridge   | Bin 7695 -> 7770 bytes
 tests/data/acpi/q35/DSDT.cphp     | Bin 8141 -> 8217 bytes
 tests/data/acpi/q35/DSDT.dimmpxm  | Bin 9331 -> 9407 bytes
 tests/data/acpi/q35/DSDT.ipmibt   | Bin 7753 -> 7828 bytes
 tests/data/acpi/q35/DSDT.memhp    | Bin 9037 -> 9112 bytes
 tests/data/acpi/q35/DSDT.mmio64   | Bin 8808 -> 8883 bytes
 tests/data/acpi/q35/DSDT.numamem  | Bin 7684 -> 7759 bytes
 tests/data/acpi/q35/DSDT.tis      | Bin 8283 -> 8358 bytes
 30 files changed, 192 insertions(+), 8 deletions(-)

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2.26.2