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* [PATCH v2 00/20] hw/arm: Store the ARM boot info in the machine state
@ 2026-08-16 13:12 Bin Meng
  2026-08-16 13:12 ` [PATCH v2 01/20] hw/arm: aspeed: Store " Bin Meng
                   ` (19 more replies)
  0 siblings, 20 replies; 27+ messages in thread
From: Bin Meng @ 2026-08-16 13:12 UTC (permalink / raw)
  To: QEMU
  Cc: Alistair Francis, Andrew Jeffery, Cédric Le Goater,
	Edgar E. Iglesias, Gaurav Sharma, Hao Wu, Jamin Lin, Jan Kiszka,
	Jean-Christophe Dubois, Joel Stanley, Kane Chen, Niek Linnenbank,
	Peter Maydell, Steven Lee, Strahinja Jankovic, Troy Lee,
	Tyrone Ting, qemu-arm


Most ARM board files declare their struct arm_boot_info as a static
object at file scope (or, occasionally, as a function-local static
inside the machine init function). arm_load_kernel() stashes a pointer
to that struct in every CPU and dereferences it from do_cpu_reset() on
each reset, so the boot info conceptually belongs to the machine for the
lifetime of the VM, not to a static object whose ownership is left
implicit.

This is a longstanding leftover pattern: modern machines such as virt,
raspi and xlnx-zcu102 already keep the boot info in their MachineState
subclass. This series converts the remaining machines that still use
a static object, moving the struct into their machine state so that its
lifetime and ownership match how arm_load_kernel() actually uses it.

Changes in v2:

Addressed 2 review comments from Peter:

- All assignments now use individual field writes (e.g.:
  bpms->bootinfo.loader_start = ...). This applies to: collie, cubieboard,
  exynos4, imx8mm-evk, integratorcp, kzm, mcimx7d-sabre, musicpal, npcm7xx,
  npcm8xx, omap_sx1, realview, sabrelite
- The following boards that previously used DEFINE_MACHINE_ARM/AARCH64 now
  use the macro DEFINE_MACHINE_EXTENDED() instead: bananapi_m2u,
  cubieboard, imx8mm-evk, integratorcp, mcimx7d-sabre, musicpal,
  orangepi-pc

Bin Meng (20):
  hw/arm: aspeed: Store boot info in the machine state
  hw/arm: aspeed_ast27x0-fc: Store boot info in the machine state
  hw/arm: bananapi_m2u: Store boot info in the machine state
  hw/arm: collie: Store boot info in the machine state
  hw/arm: cubieboard: Store boot info in the machine state
  hw/arm: exynos4_boards: Store boot info in the board state
  hw/arm: imx25_pdk: Store boot info in the board state
  hw/arm: imx8mm-evk: Store boot info in the machine state
  hw/arm: integratorcp: Store boot info in the machine state
  hw/arm: kzm: Store boot info in the board state
  hw/arm: mcimx7d-sabre: Store boot info in the machine state
  hw/arm: musicpal: Store boot info in the machine state
  hw/arm: npcm7xx: Store boot info in the machine state
  hw/arm: npcm8xx: Store boot info in the machine state
  hw/arm: omap_sx1: Store boot info in the machine state
  hw/arm: orangepi: Store boot info in the machine state
  hw/arm: realview: Store boot info in the machine state
  hw/arm: sabrelite: Store boot info in the machine state
  hw/arm: versatilepb: Store boot info in the machine state
  hw/arm: xilinx_zynq: Store boot info in the machine state

 hw/arm/aspeed.c              | 17 +++++++----------
 hw/arm/aspeed_ast27x0-fc.c   | 13 ++++++-------
 hw/arm/bananapi_m2u.c        | 21 +++++++++++++++------
 hw/arm/collie.c              | 12 +++++-------
 hw/arm/cubieboard.c          | 21 +++++++++++++++------
 hw/arm/exynos4_boards.c      | 26 +++++++++++---------------
 hw/arm/imx25_pdk.c           | 11 +++++------
 hw/arm/imx8mm-evk.c          | 29 +++++++++++++++++++----------
 hw/arm/integratorcp.c        | 22 ++++++++++++++++------
 hw/arm/kzm.c                 | 12 +++++-------
 hw/arm/mcimx7d-sabre.c       | 28 +++++++++++++++++++---------
 hw/arm/musicpal.c            | 21 +++++++++++++++------
 hw/arm/npcm7xx.c             | 28 +++++++++++++---------------
 hw/arm/npcm7xx_boards.c      | 10 +++++-----
 hw/arm/npcm8xx.c             | 28 +++++++++++++---------------
 hw/arm/npcm8xx_boards.c      |  2 +-
 hw/arm/omap_sx1.c            | 19 +++++++++++++------
 hw/arm/orangepi.c            | 22 ++++++++++++++++------
 hw/arm/realview.c            | 27 ++++++++++++++++++---------
 hw/arm/sabrelite.c           | 22 ++++++++++------------
 hw/arm/versatilepb.c         | 16 ++++++++++++----
 hw/arm/xilinx_zynq.c         | 17 ++++++++---------
 include/hw/arm/aspeed.h      |  2 ++
 include/hw/arm/npcm7xx.h     | 10 ++++++++--
 include/hw/arm/npcm8xx.h     | 10 ++++++++--
 include/hw/arm/xilinx_zynq.h |  2 ++
 26 files changed, 267 insertions(+), 181 deletions(-)

---
base-commit: af06b5df2610fe5de6c02d17c17bced9e9f0d47d
branch: cleanup-arm-static-boot-info

-- 
2.53.0



^ permalink raw reply	[flat|nested] 27+ messages in thread

end of thread, other threads:[~2026-08-16 15:07 UTC | newest]

Thread overview: 27+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-16 13:12 [PATCH v2 00/20] hw/arm: Store the ARM boot info in the machine state Bin Meng
2026-08-16 13:12 ` [PATCH v2 01/20] hw/arm: aspeed: Store " Bin Meng
2026-08-16 14:54   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 02/20] hw/arm: aspeed_ast27x0-fc: " Bin Meng
2026-08-16 14:55   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 03/20] hw/arm: bananapi_m2u: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 04/20] hw/arm: collie: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 05/20] hw/arm: cubieboard: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 06/20] hw/arm: exynos4_boards: Store boot info in the board state Bin Meng
2026-08-16 14:56   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 07/20] hw/arm: imx25_pdk: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 08/20] hw/arm: imx8mm-evk: Store boot info in the machine state Bin Meng
2026-08-16 13:12 ` [PATCH v2 09/20] hw/arm: integratorcp: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 10/20] hw/arm: kzm: Store boot info in the board state Bin Meng
2026-08-16 13:12 ` [PATCH v2 11/20] hw/arm: mcimx7d-sabre: Store boot info in the machine state Bin Meng
2026-08-16 13:12 ` [PATCH v2 12/20] hw/arm: musicpal: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 13/20] hw/arm: npcm7xx: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 14/20] hw/arm: npcm8xx: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 15/20] hw/arm: omap_sx1: " Bin Meng
2026-08-16 14:57   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 16/20] hw/arm: orangepi: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 17/20] hw/arm: realview: " Bin Meng
2026-08-16 13:12 ` [PATCH v2 18/20] hw/arm: sabrelite: " Bin Meng
2026-08-16 15:07   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 19/20] hw/arm: versatilepb: " Bin Meng
2026-08-16 15:06   ` Philippe Mathieu-Daudé
2026-08-16 13:12 ` [PATCH v2 20/20] hw/arm: xilinx_zynq: " Bin Meng

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