[v2] Add architecture agnostic code to support vCPU Hotplug

[PATCH V2 00/10] Add architecture agnostic code to support vCPU Hotplug

Salil Mehta via posted 10 patches 7 months ago

Diff against v1 v3 v4 v5 v6 v7 v8
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git fetch https://github.com/patchew-project/qemu tags/patchew/20230930001933.2660-1-salil.mehta@huawei.com

Maintainers: Paolo Bonzini <pbonzini@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <anisinha@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Yanan Wang <wangyanan55@huawei.com>, Peter Xu <peterx@redhat.com>, David Hildenbrand <david@redhat.com>, Peter Maydell <peter.maydell@linaro.org>

There is a newer version of this series

accel/kvm/kvm-all.c                    | 63 +++++++++++++++++++-------
gdbstub/gdbstub.c                      | 14 ++++++
hw/acpi/acpi-cpu-hotplug-stub.c        |  6 +++
hw/acpi/cpu.c                          | 25 ++++++----
hw/acpi/generic_event_device.c         | 22 +++++++++
hw/i386/acpi-build.c                   |  2 +-
include/exec/cpu-common.h              |  8 ++++
include/exec/gdbstub.h                 |  5 ++
include/hw/acpi/cpu.h                  |  5 +-
include/hw/acpi/cpu_hotplug.h          |  4 ++
include/hw/acpi/generic_event_device.h |  5 ++
include/hw/core/cpu.h                  |  1 +
include/sysemu/kvm.h                   | 14 ++++++
softmmu/physmem.c                      | 25 ++++++++++
target/arm/kvm.c                       |  8 +++-
15 files changed, 179 insertions(+), 28 deletions(-)

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[PATCH V2 00/10] Add architecture agnostic code to support vCPU Hotplug

Posted by Salil Mehta via 7 months ago

Virtual CPU hotplug support is being added across various architectures [1][3].
This series adds various code bits common across all architectures:

1. vCPU creation and Parking code refactor [Patch 1]
2. Update ACPI GED framework to support vCPU Hotplug [Patch 4,6,7]
3. ACPI CPUs AML code change [Patch 5]
3. Helper functions to support unrealization of CPU objects [Patch 8,9]
4. Misc [Patch 2,3,10]


References:
[1] https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/
[2] https://lore.kernel.org/all/20230913163823.7880-1-james.morse@arm.com/
[3] https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixianglai@loongson.cn/

Jean-Philippe Brucker (1):
  target/arm/kvm: Write CPU state back to KVM on reset

Salil Mehta (9):
  accel/kvm: Extract common KVM vCPU {creation,parking} code
  hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header file
  hw/acpi: Add ACPI CPU hotplug init stub
  hw/acpi: Init GED framework with cpu hotplug events
  hw/acpi: Update CPUs AML with cpu-(ctrl)dev change
  hw/acpi: Update GED _EVT method AML with cpu scan
  hw/acpi: Update ACPI GED framework to support vCPU Hotplug
  physmem: Add helper function to destroy CPU AddressSpace
  gdbstub: Add helper function to unregister GDB register space

 accel/kvm/kvm-all.c                    | 63 +++++++++++++++++++-------
 gdbstub/gdbstub.c                      | 14 ++++++
 hw/acpi/acpi-cpu-hotplug-stub.c        |  6 +++
 hw/acpi/cpu.c                          | 25 ++++++----
 hw/acpi/generic_event_device.c         | 22 +++++++++
 hw/i386/acpi-build.c                   |  2 +-
 include/exec/cpu-common.h              |  8 ++++
 include/exec/gdbstub.h                 |  5 ++
 include/hw/acpi/cpu.h                  |  5 +-
 include/hw/acpi/cpu_hotplug.h          |  4 ++
 include/hw/acpi/generic_event_device.h |  5 ++
 include/hw/core/cpu.h                  |  1 +
 include/sysemu/kvm.h                   | 14 ++++++
 softmmu/physmem.c                      | 25 ++++++++++
 target/arm/kvm.c                       |  8 +++-
 15 files changed, 179 insertions(+), 28 deletions(-)

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2.34.1