[Qemu-devel] [PATCH 0/5] RFC: distinguish warm reset from cold reset.

[Isaku Yamahata]

This patch set distinguish warm reset from cold reset by
introducing warm reset callback handler.
The first 4 patches are trivial clean up patches. The last patch of 5/5
is RFC patch.

The following thread arose cold reset vs warm reset issues.
http://lists.nongnu.org/archive/html/qemu-devel/2010-08/msg00186.html
The summary is
- warm reset is wanted in qemu
  - Pressing the reset button is a warm reset on real machines
  - Sparc64 CPU uses different reset vector for warm and cold reset,
    so system_reset acts like a reset button
  - Bus reset can be implemented utilizing qdev frame work instead of
    implemeting it each bus layer independently.
- The modification should be incremental.
  Anthony would like to see that as an incremental addition to what we have
  today (like introducing a propagating warm reset callback) and thinking
  through what the actual behavior should and shouldn't be.


If the direction is okay, The next step would be a patch(set) for qdev which
would introduce qdev_cold_reset(), qdev_warm_reset(),
DeviceInfo::cold_reset and DeviceInfo::warm_reset
and would obsolete qdev_reset() and DeviceInfo::reset.


Isaku Yamahata (5):
  sysemu.h, vl.c: static'fy qemu_xxx_requested().
  vl.c: consolidate qemu_xxx_requested() logic.
  vl.c: consolidate qemu_system_xxx_request() logic.
  vl.c: factor out qemu_reguster/unregister_reset().
  RFC: distinguish warm reset from cold reset.

 hw/hw.h  |    7 +++
 sysemu.h |    8 ++--
 vl.c     |  163 ++++++++++++++++++++++++++++++++++++++++++++++----------------
 3 files changed, 133 insertions(+), 45 deletions(-)