[Qemu-devel] [PATCH qom-cpu for-1.4 0/6] Unmigratable CPUs for 1.4

[Andreas Färber]

Hello,

Prompted by earlier patches from Juan, this series cleans up some targets
that don't implement migration - be it by no-op implementations, by erroring
out in the implementation or by lack of implementation.

Making targets migratable is preferable over
 marking devices as migratable is preferable over
  terminating QEMU while attempting to migrate.

This series, based on qom-cpu queue, takes advantage of us having converted
the CPUState into a device for the upcoming release by associating
VMStateDescriptions marked as unmigratable with the target's base CPU class.

By dropping the machine.c files, now no longer mandated by the build system,
we also elegantly solve the issue of lacking license headers. :)

Known conflicts:
* CPU realizefn series on qom-cpu-next (cpu.c:class_init)

A follow-up series based on qom-cpu-next is in preparation, to tackle the bug
that alpha implements cpu_{save,load}() but does not have them registered,
rendering the implementation virtually useless IIUC.
I am still a bit unclear about the compatibility considerations: There are
subtle differences in calculating the instance_id between CPUArchState and
DeviceClass. Since no one complained about alpha so far I would like to defer
this to 1.5 to evaluate whether to handle VMState differently for new CPUs wrt
"cpu_common", "cpu" and DeviceClass vs. CPUClass (preview on qom-cpu-vmstate).

Regards,
Andreas

Cc: Juan Quintela <address@hidden> (vmstate)
Cc: Edgar E. Iglesias <address@hidden> (microblaze)
Cc: Peter Crosthwaite <address@hidden> (microblaze)
Cc: Alexander Graf <address@hidden> (s390x)
Cc: Richard Henderson <address@hidden> (s390x)
Cc: Aurélien Jarno <address@hidden> (sh4)
Cc: Guan Xuetao <address@hidden> (uc32)
Cc: Max Filippov <address@hidden> (xtensa)
Cc: Anthony Liguori <address@hidden>

Andreas Färber (6):
  target-unicore32: Mark as unmigratable
  target-microblaze: Mark as unmigratable
  target-xtensa: Mark as unmigratable
  target-sh4: Mark as unmigratable
  target-s390x: Mark as unmigratable
  target-m68k: Mark as unmigratable

 target-m68k/Makefile.objs       |    1 -
 target-m68k/cpu.c               |    8 ++++++++
 target-microblaze/Makefile.objs |    2 +-
 target-microblaze/cpu.c         |    9 +++++++++
 target-microblaze/cpu.h         |    2 --
 target-microblaze/machine.c     |   11 -----------
 target-s390x/Makefile.objs      |    1 -
 target-s390x/cpu.c              |   10 +++++++++-
 target-s390x/machine.c          |   30 ------------------------------
 target-sh4/Makefile.objs        |    1 -
 target-sh4/cpu.c                |    9 +++++++++
 target-unicore32/Makefile.objs  |    2 +-
 target-unicore32/cpu.c          |    8 ++++++++
 target-unicore32/cpu.h          |    2 --
 target-unicore32/machine.c      |   23 -----------------------
 target-xtensa/Makefile.objs     |    1 -
 target-xtensa/cpu.c             |    9 +++++++++
 target-xtensa/machine.c         |   38 --------------------------------------
 18 Dateien geändert, 54 Zeilen hinzugefügt(+), 113 Zeilen entfernt(-)
 delete mode 100644 target-m68k/machine.c
 delete mode 100644 target-microblaze/machine.c
 delete mode 100644 target-s390x/machine.c
 delete mode 100644 target-sh4/machine.c
 delete mode 100644 target-unicore32/machine.c
 delete mode 100644 target-xtensa/machine.c

-- 
1.7.10.4