[Qemu-devel] [PATCH v3 0/8] More sensible default for -drive interface type

[Markus Armbruster <armbru@redhat.com>]

Block backends defined with -drive if=T, T!=none are meant to be
picked up by machine initialization code: a suitable frontend gets
created and wired up automatically.

if=T drives not picked up that way can still be used with -device as
if they had if=none, but that's unclean and best avoided.  Unused ones
produce an "Orphaned drive without device" warning.

Many machine types default to if=ide, even though they don't actually
have an IDE controller.  A few default to if=scsi, even though they
lack a SCSI HBA.  Change their default to if=none.

While their, fix handling of index and unit for a few machines with
AHCI controllers.

With the improved default, unintentional definition of orphaned drives
should be unlikely.  Improve the "orphaned drive" warning and turn it
into an error.  Drop a few special cases of this error that are now
redundant.

v3:
* Trivially rebased
* PATCH 6-8: Diagnostic message improved a bit [John Snow]
* PATCH 7: Commit message typo fixed [John Snow]

v2:
* PATCH v1 6/6 dropped; if=scsi eccentricities will be addressed in a
  series of its own
* PATCH 6-8 new

Markus Armbruster (8):
  hw: Default -drive to if=ide explicitly where it works
  hw/arm/cubieboard hw/arm/xlnx-ep108: Fix units_per_default_bus
  hw: Default -drive to if=none instead of ide when ide cannot work
  hw: Default -drive to if=none instead of scsi when scsi cannot work
  hw/arm/highbank: Default -drive to if=ide instead of if=scsi
  blockdev: Improve message for orphaned -drive
  blockdev: Make orphaned -drive fatal
  hw: Drop superfluous special checks for orphaned -drive

 blockdev.c                | 23 +++++++++++++----------
 hw/alpha/dp264.c          |  1 +
 hw/arm/cubieboard.c       |  4 ++++
 hw/arm/highbank.c         |  8 ++++++--
 hw/arm/realview.c         |  1 -
 hw/arm/spitz.c            |  3 +++
 hw/arm/tosa.c             |  1 +
 hw/arm/vexpress.c         |  1 -
 hw/arm/xilinx_zynq.c      |  1 -
 hw/arm/xlnx-ep108.c       |  6 ++++++
 hw/i386/pc.c              |  1 +
 hw/ide/core.c             | 17 -----------------
 hw/mips/mips_fulong2e.c   |  1 +
 hw/mips/mips_jazz.c       |  4 ----
 hw/mips/mips_malta.c      |  1 +
 hw/mips/mips_r4k.c        |  1 +
 hw/ppc/mac_newworld.c     |  1 +
 hw/ppc/mac_oldworld.c     |  1 +
 hw/ppc/prep.c             |  1 +
 hw/sh4/r2d.c              |  1 +
 hw/sparc/sun4m.c          |  5 -----
 hw/sparc64/sun4u.c        |  2 ++
 include/sysemu/blockdev.h | 11 +++++------
 23 files changed, 49 insertions(+), 47 deletions(-)

-- 
2.7.4