[Qemu-devel] [PATCH v2 0/6] Replace has_dynamic_sysbus with list of allowed device types

[Eduardo Habkost]

Changes v1 (RFC) -> v2:
* Patch 1 now just adds TYPE_SYS_BUS_DEVICE to the existing
  has_dynamic_sysbus=true machines, and other patches make
  the lists on each machine-type more specific.
* Change the name of the new field to
  allowed_dynamic_sysbus_devices.
* The q35 allowed list is much shorter because the list of
  user-creatable sysbus devices in QEMU is shorter.
* Keep the xen_set_dynamic_sysbus() hack, just change it
  to add 'xen-sysdev" to the allowed list.
* Simplified the arm/virt code.

Summary
-------

This series replaces the existing has_dynamic_sysbus flag (that
makes the machine accept every user-creatable sysbus device type
on the command-line) with a list of allowed devices.

This will be helpful when implementing the new query-device-slots
command, because each machine type will include only the sysbus
devices it really supports, instead of including a catch-all
TYPE_SYS_BUS_DEVICE "slot".

This will be useful to add support to new sysbus devices on
machines like pc_piix, that don't have has_dynamic_sysbus set
today.

This also makes the code safer: just compiling a new sysbus
device in the same QEMU binary won't make a machine-type
automatically start accepting the device.

Cc: Marc-André Lureau <address@hidden>
Cc: Marcel Apfelbaum <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Cc: Stefan Berger <address@hidden>
Cc: Alexander Graf <address@hidden>

Eduardo Habkost (6):
  machine: Replace has_dynamic_sysbus with list of allowed devices
  hw/arm/virt: Allow only supported dynamic sysbus devices
  ppc: e500: Allow only supported dynamic sysbus devices
  spapr: Allow only supported dynamic sysbus devices
  xen: Add only xen-sysdev to dynamic sysbus device list
  q35: Allow only supported dynamic sysbus devices

 include/hw/boards.h  |  5 ++++-
 hw/arm/virt.c        |  5 ++++-
 hw/core/machine.c    | 43 +++++++++++++++++++++++++++++--------------
 hw/i386/pc_q35.c     |  5 ++++-
 hw/ppc/e500plat.c    |  4 +++-
 hw/ppc/spapr.c       |  2 +-
 hw/xen/xen_backend.c |  2 +-
 7 files changed, 46 insertions(+), 20 deletions(-)

-- 
2.13.6