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[Qemu-devel] [PATCH hack dontapply v2 0/7] Dynamic _CST generation

From: Michael S. Tsirkin
Subject: [Qemu-devel] [PATCH hack dontapply v2 0/7] Dynamic _CST generation
Date: Tue, 10 Jul 2018 03:01:30 +0300

Now that basic support for guest CPU PM is upstream, I started looking
for making it migrateable.  Since a VM can be migrated between different
hosts, PM info needs to change each time with move the VM to a different

This adds infrastructure - based on Load/Unload - to support exactly
that: QEMU generates AML (changing it on migration) and stores it in
reserved memory, OSPM loads _CST from there on demand.

This is a partially functional prototype.

What works:
    loading _CST dynamically and reporting it to OSPM

What doesn't:
    detecting host configuration and generating correct _CST package
    notifying guest about the change to trigger _CST re-evaluation
    disabling mwait/halt exists as appropriate

Michael S. Tsirkin (6):
  acpi: aml: add aml_register()
  acpi: generalize aml_package / aml_varpackage
  acpi: aml_load/aml_unload
  acpi: export acpi_checksum
  acpi: init header without linking
  acpi: aml generation for _CST
  pc: HACK: acpi: tie in _CST object to Processor

 include/hw/acpi/acpi.h      |   2 +
 include/hw/acpi/aml-build.h |  14 ++-
 include/hw/acpi/cst.h       |   8 ++
 include/hw/i386/pc.h        |   5 ++
 hw/acpi/aml-build.c         |  81 ++++++++++++++---
 hw/acpi/core.c              |   2 +-
 hw/acpi/cpu.c               |   5 ++
 hw/acpi/cpu_hotplug.c       |  11 +--
 hw/acpi/cst.c               | 173 ++++++++++++++++++++++++++++++++++++
 hw/arm/virt-acpi-build.c    |   2 +-
 hw/i386/acpi-build.c        |  10 ++-
 hw/acpi/Makefile.objs       |   2 +-
 12 files changed, 290 insertions(+), 25 deletions(-)
 create mode 100644 include/hw/acpi/cst.h
 create mode 100644 hw/acpi/cst.c


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