[PATCH v2 00/13] microvm: add acpi support

[Gerd Hoffmann]

I know that not supporting ACPI in microvm is intentional.  If you still
don't want ACPI this is perfectly fine, you can use the usual -no-acpi
switch to toggle ACPI support.

These are the advantages you are going to loose then:

  (1) virtio-mmio device discovery without command line hacks (tweaking
      the command line is a problem when not using direct kernel boot).
  (2) Better IO-APIC support, we can use IRQ lines 16-23.
  (3) ACPI power button (aka powerdown request) works.
  (4) machine poweroff (aka S5 state) works.

Together with seabios patches for virtio-mmio support this allows to
boot standard fedora images (cloud, coreos, workstation live) with the
microvm machine type.

git branch for testing (including updated seabios):
        https://git.kraxel.org/cgit/qemu/log/?h=sirius/microvm

changes in v2:
  * some acpi cleanups are an separate patch series now.
  * switched to hw reduced acpi & generic event device.
  * misc fixes here and there.

cheers,
  Gerd

Gerd Hoffmann (13):
  acpi: make build_madt() more generic.
  acpi: create acpi-common.c and move madt code
  acpi: madt: skip pci override on pci-less systems (microvm)
  acpi: move acpi_build_facs to acpi-common.c
  acpi: move acpi_init_common_fadt_data to acpi-common.c
  acpi: move acpi_align_size to acpi-common.h
  acpi: fadt: add hw-reduced sleep register support
  acpi: generic event device for x86
  microvm: add minimal acpi support
  microvm: disable virtio-mmio cmdline hack
  microvm: add acpi_dsdt_add_virtio() for x86
  microvm: make virtio irq base runtime configurable
  microvm/acpi: use GSI 16-23 for virtio

 hw/i386/acpi-common.h                  |  38 ++++
 hw/i386/acpi-microvm.h                 |   6 +
 include/hw/acpi/acpi-defs.h            |   2 +
 include/hw/acpi/generic_event_device.h |  10 +
 include/hw/i386/microvm.h              |  10 +-
 hw/acpi/aml-build.c                    |   4 +-
 hw/i386/acpi-build.c                   | 198 +-------------------
 hw/i386/acpi-common.c                  | 206 ++++++++++++++++++++
 hw/i386/acpi-microvm.c                 | 249 +++++++++++++++++++++++++
 hw/i386/generic_event_device_x86.c     | 114 +++++++++++
 hw/i386/microvm.c                      |  36 +++-
 hw/i386/Kconfig                        |   1 +
 hw/i386/Makefile.objs                  |   3 +
 13 files changed, 676 insertions(+), 201 deletions(-)
 create mode 100644 hw/i386/acpi-common.h
 create mode 100644 hw/i386/acpi-microvm.h
 create mode 100644 hw/i386/acpi-common.c
 create mode 100644 hw/i386/acpi-microvm.c
 create mode 100644 hw/i386/generic_event_device_x86.c

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2.18.4