[PATCH v4 00/33] Unified CPU type check

[Gavin Shan <gshan@redhat.com>]

There are two places where the user specified CPU type is checked to see
if it's supported or allowed by the board: machine_run_board_init() and
mc->init(). We don't have to maintain two duplicate sets of logic. This
series intends to move the check to machine_run_board_init() so that we
have unified CPU type check.

Note that the term "the registered CPU type name" used in this series
corresponds to the names of non-abstract CPU classes, regitered by
individual target.

PATCH[01-03] Come from Philippe Mathieu-Daudé. cpu_class_by_name()
             is consolidated to ensure that the returned object
             class isn't abstract and a child object class of
             CPU_RESOLVING_TYPE
PATCH[04]    Adds a generic helper cpu_model_from_type() to extract
             the CPU model name from the CPU type name
PATCH[05-20] Uses cpu_model_from_type() in the individual target
PATCH[21-24] Implements cpu_list() for the missed targets
PATCH[25-33] Validates the CPU type in machine_run_board_init() for
             the individual board

v1: https://lists.nongnu.org/archive/html/qemu-arm/2023-07/msg00302.html
v2: https://lists.nongnu.org/archive/html/qemu-arm/2023-07/msg00528.html
v3: https://lists.nongnu.org/archive/html/qemu-arm/2023-09/msg00157.html

Testing
=======

With the following command lines, the output messages are varied before
and after the series is applied.

  ./build/qemu-system-aarch64            \
  -accel tcg -machine virt,gic-version=3 \
  -cpu cortex-a8 -smp maxcpus=2,cpus=1

Before the series is applied:

  qemu-system-aarch64: mach-virt: CPU type cortex-a8-arm-cpu not supported

After the series is applied:

  qemu-system-aarch64: Invalid CPU type: cortex-a8-arm-cpu
  The valid models are: cortex-a7, cortex-a15, cortex-a35, cortex-a55,
                        cortex-a72, cortex-a76, a64fx, neoverse-n1,
                        neoverse-v1, cortex-a53, cortex-a57, max

Changelog
=========
v4:
  * Rebase to latest v8.1.2                                     (Gavin)
  * Integrate Philippe's patches where cpu_class_by_name()
    is consolidated and my duplicate code is dropped            (Philippe)
  * Simplified changelog and improvements                       (Thomas)
  * g_assert() on the return value from cpu_model_from_type()
    in is_cpu_type_supported()                                  (Philippe)
  * Collected r-bs from Philippe Mathieu-Daudé, Leif Lindholm,
    Bastian Koppelmann, Daniel Henrique Barboza, Cédric Le Goater,
    Gavin Shan                                                  (Gavin)
v3:
  * Generic helper cpu_model_from_type()                        (Igor)
  * Apply cpu_model_from_type() to the individual targets       (Igor)
  * Implement cpu_list() for the missed targets                 (Gavin)
  * Remove mc->valid_cpu_models                                 (Richard)
  * Separate patch to constify mc->validate_cpu_types           (Gavin)
v2:
  * Constify mc->valid_cpu_types                                (Richard)
  * Print the supported CPU models, instead of typenames        (Peter)
  * Misc improvements for the hleper to do the check            (Igor)
  * More patches to move the check                              (Marcin)

Gavin Shan (30):
  cpu: Add helper cpu_model_from_type()
  target/alpha: Use generic helper to show CPU model names
  target/arm: Use generic helper to show CPU model names
  target/avr: Use generic helper to show CPU model names
  target/cris: Use generic helper to show CPU model names
  target/hexagon: Use generic helper to show CPU model names
  target/i386: Use generic helper to show CPU model names
  target/loongarch: Use generic helper to show CPU model names
  target/m68k: Use generic helper to show CPU model names
  target/mips: Use generic helper to show CPU model names
  target/openrisc: Use generic helper to show CPU model names
  target/ppc: Use generic helper to show CPU model names
  target/riscv: Use generic helper to show CPU model names
  target/rx: Use generic helper to show CPU model names
  target/s390x: Use generic helper to show CPU model names
  target/sh4: Use generic helper to show CPU model names
  target/tricore: Use generic helper to show CPU model names
  target/hppa: Implement hppa_cpu_list()
  target/microblaze: Implement microblaze_cpu_list()
  target/nios2: Implement nios2_cpu_list()
  cpu: Mark cpu_list() supported on all targets
  machine: Constify MachineClass::valid_cpu_types[i]
  machine: Use error handling when CPU type is checked
  machine: Introduce helper is_cpu_type_supported()
  machine: Print CPU model name instead of CPU type name
  hw/arm/virt: Check CPU type in machine_run_board_init()
  hw/arm/virt: Hide host CPU model for tcg
  hw/arm/sbsa-ref: Check CPU type in machine_run_board_init()
  hw/arm: Check CPU type in machine_run_board_init()
  hw/riscv/shakti_c: Check CPU type in machine_run_board_init()

Philippe Mathieu-Daudé (3):
  target/alpha: Tidy up alpha_cpu_class_by_name()
  hw/cpu: Call object_class_is_abstract() once in cpu_class_by_name()
  cpu: Call object_class_dynamic_cast() once in cpu_class_by_name()

 bsd-user/main.c                       |  3 -
 cpu-target.c                          | 34 +++++++++-
 hw/arm/bananapi_m2u.c                 | 12 ++--
 hw/arm/cubieboard.c                   | 12 ++--
 hw/arm/mps2-tz.c                      | 20 ++++--
 hw/arm/mps2.c                         | 25 +++++--
 hw/arm/msf2-som.c                     | 12 ++--
 hw/arm/musca.c                        | 13 ++--
 hw/arm/npcm7xx_boards.c               | 13 ++--
 hw/arm/orangepi.c                     | 12 ++--
 hw/arm/sbsa-ref.c                     | 21 +-----
 hw/arm/virt.c                         | 23 ++-----
 hw/core/cpu-common.c                  |  8 ---
 hw/core/machine.c                     | 93 ++++++++++++++++-----------
 hw/m68k/q800.c                        |  2 +-
 hw/riscv/shakti_c.c                   | 11 ++--
 include/hw/boards.h                   |  2 +-
 include/hw/core/cpu.h                 | 19 +++++-
 target/alpha/cpu.c                    | 15 ++---
 target/arm/arm-qmp-cmds.c             |  6 +-
 target/arm/cpu.c                      |  5 +-
 target/arm/helper.c                   | 12 ++--
 target/avr/cpu.c                      | 17 +++--
 target/cris/cpu.c                     | 12 ++--
 target/hexagon/cpu.c                  | 17 ++---
 target/hppa/cpu.c                     | 19 ++++++
 target/hppa/cpu.h                     |  3 +
 target/i386/cpu.c                     |  7 +-
 target/loongarch/cpu.c                | 14 ++--
 target/loongarch/loongarch-qmp-cmds.c |  3 +-
 target/m68k/cpu.c                     |  5 +-
 target/m68k/helper.c                  | 14 ++--
 target/microblaze/cpu.c               | 20 ++++++
 target/microblaze/cpu.h               |  3 +
 target/mips/cpu-defs.c.inc            |  9 ---
 target/mips/cpu.c                     | 18 ++++++
 target/mips/sysemu/mips-qmp-cmds.c    |  3 +-
 target/nios2/cpu.c                    | 20 ++++++
 target/nios2/cpu.h                    |  3 +
 target/openrisc/cpu.c                 | 19 ++----
 target/ppc/cpu_init.c                 | 12 ++--
 target/riscv/cpu.c                    | 19 +++---
 target/riscv/riscv-qmp-cmds.c         |  3 +-
 target/rx/cpu.c                       | 11 ++--
 target/s390x/cpu_models.c             | 12 ++--
 target/s390x/cpu_models_sysemu.c      |  9 ++-
 target/sh4/cpu.c                      | 26 ++++----
 target/tricore/cpu.c                  |  5 +-
 target/tricore/helper.c               | 13 ++--
 target/xtensa/cpu.c                   |  5 +-
 50 files changed, 384 insertions(+), 310 deletions(-)

-- 
2.41.0