[Qemu-devel] [PATCH v13 0/5] vGICv3 support

[Pavel Fedin]

This series introduces support for GICv3 by KVM. Software emulation is
currently not supported.

v12 => v13:
- Many stylistic fixes
- Fixed up ACPI data for virt machine
- Added gic-version=host value which probes for best possible vGIC version
- Reserved regions for memory-mapped CPU/vCPU/HYP interfaces
- Maximum number of CPUs for virt machine dropped to 123 (memory map
  limitation)

v11 => v12
- Do not set timer PPI CPU mask in device tree for GICv3
- Fixed small styling issues in hw/arm/virt.c
- Completely untied kvm_gic_access() from GIC and turned into
  kvm_device_access(). Attribute mapping is now handled in
  gicd/gicc wrapper macros.

v11 => v10
- Fixed minor issues with checkpatch and comments, reported by Eric Auger
- Make reusable kvm_gic_supports_attr(), moved to kvm-all.c and renamed
  as kvm_device_check_attr(). Useful for future live migration.

v9 => v10
- Renamed "gicversion" option to "gic-version" (was forgotten in v9)
- Data pointer in kvm_gic_access() is now void * because in case of
  vGICv3 this function is expected to operate on 64-bit registers too
  (GICD_IROUTER for instance)

v8 => v9
- Removed all limitations on CPU and IRQ number from the base class
- Added back missing properties, interface is now the same as in GICv2
- Refactored reusable parts of vGICv2 code, decreased number of changes
- Removed GIC type check from kvm_arch_irqchip_create(), no more need to
  specify GIC type early
- Fixed up all commit messages / logs
- Removed 'nvic' field assignment in virt machine (was forgotten in v8)
- CPU number limitation for 'virt' machine now comes from memory map
  (how many redistributors can be placed). With current layout it appears
  to be 126.

v7 => v8
- Removed all unused SW emulation code
- Removed unnecessary attributes from common class
- Set "unmigratable" flag for GICv3 device
- Removed unnecessary conditions from kvm_arm_gicv3_realize()
- Fixed GIC type setting in vexpress model, was done in wrong place
- Fixed condition style in hw/intc/Makefile.objs
- Cleaned up virt machine memory map

v6 => v7
- Wrap own GIC type definitions on top of KVM ones. Fixed build on
  non-ARM-Linux hosts

v5 => v6
- Fixed various checkpatch.pl style warnings
- Removed TODO in gicv3_init_irqs_and_mmio(), relevant memory API patch
  included
- gicv3_init_irqs_and_mmio() now takes 3 arguments instead of 4. It is more
  convenient to pass MMIO descriptors as array

v4 => v5
- Do not reintroduce several constants shared with GICv2, reuse them instead.
- Added gicv3_init_irqs_and_mmio() in base class, to be used by both software
  emulation and KVM code. Avoids code duplication.
- Do not add NULL msi-parent phandle to PCI device in the FDT
- Removed a couple of stale things from virt.c

v3 => v4
- Fixed stupid build breakage in patch 0002
- Rebased on top of current master, patch 0003 adjusted according to
  kvm_irqchip_create() changes
- Added assertion against uninitialized kernel_irqchip_type
- Removed kernel_irqchip_type initialization from models which do not
  use KVM vGIC

v2 => v3
- Removed some unrelated and unnecessary changes from virt machine,
  occasionally slipped in; some of them caused qemu to crash on ARM32.
- Fixed build for ARM32; vGICv3 code requires definitions which are
  present only in ARM64 kernel

v1 => v2
- Base class included, taken from the series by Shlomo Pongratz:
  http://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg01512.html
  The code is refactored as little as possible in order to simplify
  further addition of software emulation:
  - Minor fixes in code style and comments, according to old reviews
  - Removed REV_V3 definition because it's currently not used, and it does
    not add any meaning to number 3.
  - Removed reserved regions for MBI and ITS (except for 'virt' machine
    memory map). These should go to separate classes when implemented.
- Improved commit messages
- vGIC patches restructured
- Use 'gicversion' option instead of virt-v3 machine

Pavel Fedin (4):
  intc/gic: Extract some reusable vGIC code
  arm_kvm: Do not assume particular GIC type in
    kvm_arch_irqchip_create()
  hw/intc: Initial implementation of vGICv3
  hw/arm/virt: Add gic-version option to virt machine

Shlomo Pongratz (1):
  hw/intc: Implement GIC-500 base class

 dtc                                |   2 +-
 hw/arm/virt-acpi-build.c           |  54 ++++++++------
 hw/arm/virt.c                      | 124 ++++++++++++++++++++++++------
 hw/intc/Makefile.objs              |   2 +
 hw/intc/arm_gic_kvm.c              |  98 ++++++++----------------
 hw/intc/arm_gicv3_common.c         | 140 ++++++++++++++++++++++++++++++++++
 hw/intc/arm_gicv3_kvm.c            | 149 +++++++++++++++++++++++++++++++++++++
 hw/intc/vgic_common.h              |  35 +++++++++
 include/hw/acpi/acpi-defs.h        |   9 +++
 include/hw/arm/virt-acpi-build.h   |   1 +
 include/hw/arm/virt.h              |   4 +-
 include/hw/intc/arm_gicv3_common.h |  68 +++++++++++++++++
 include/sysemu/kvm.h               |  26 +++++++
 kvm-all.c                          |  34 +++++++++
 target-arm/kvm.c                   |  19 +++--
 target-arm/kvm_arm.h               |  19 +++++
 target-arm/machine.c               |  18 +++++
 17 files changed, 683 insertions(+), 119 deletions(-)
 create mode 100644 hw/intc/arm_gicv3_common.c
 create mode 100644 hw/intc/arm_gicv3_kvm.c
 create mode 100644 hw/intc/vgic_common.h
 create mode 100644 include/hw/intc/arm_gicv3_common.h

-- 
2.4.4