[Qemu-devel] [PATCH 0/3] block patches for auto detection of geometry and block size

[Christian Borntraeger]

Here are three patches that allow to detect the host configuration of
geometry and block sizes. This is necessary on s390 to make the guest partition
detection work (on dasds the geometry still influences the layout), as well as
to not break cache=none (e.g. dasd disks often have 4k block size)

These patches try to minize the impact by:
- using HGIO_GETGEO only in cases were the layout cannot be read from disk
- using host block size only if the user or the bus specifies the special
  value of 0 for logical_block_size

Einar Lueck (3):
  hd-geometry.c: Integrate HDIO_GETGEO in guessing
  hd-geometry.c/s390: Disable geometry translation
  block: support auto-sensing of block sizes

 hw/block-common.c    |   29 ++++++++++++
 hw/block-common.h    |   12 +++--
 hw/hd-geometry.c     |  129 +++++++++++++++++++++++++++++++++++---------------
 hw/ide/qdev.c        |    1 +
 hw/qdev-properties.c |    4 +-
 hw/s390-virtio-bus.c |    2 +-
 hw/scsi-disk.c       |    1 +
 hw/virtio-blk.c      |    1 +
 8 files changed, 137 insertions(+), 42 deletions(-)

-- 
1.7.10.1