[Qemu-devel] [PULLv2 0/7] s390x/kvm kdump and reset related changes

[Christian Borntraeger]

Alex, 

here is the adopted series.
- Patch 1 is new, to make patch2 look better
- Patch 2 was adopted to move everything into misc helper
  please note: I did not wire up the tcg diag handler for known reasons
               This should be trivial to implement
- Patch 5 was also slightly adopted to make the full reset identical to
  the previous state (The old patch changed the order of some reset steps)
- Patch 6 was adopted to also go into misc_helper
- Patch 3,4,7 are unchanged
All patches compile- and checkpatch tested. kdump functionality, reboot,
signal quiesce, cpu online/offline tested on s390x/kvm. Basic run of s390x 
emulation on i386 also tested.

Please ACK the series.
Anthony, can you pull afterwards?

The following changes since commit b5d54bd42158b90b239bb6ce9c13072eb3a53fd2:

  Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5 (2013-08-29 
17:21:51 -0500)

are available in the git repository at:


  git://github.com/borntraeger/qemu.git tags/kdump

for you to fetch changes up to 7f7f975295bc19829b3bd26cadc7f1c9eadb7c6b:

  s390: wire up nmi command to raise a RESTART interrupt on S390 (2013-08-30 
14:16:48 +0200)

----------------------------------------------------------------
This is a set of patches dealing with kdump support for s390x/kvm.
kdump on s390x uses subcode 1 of diagnose 0x308 to put the hardware
in a defined state. This is different from a full reset, since it
does not touch all CPU registers.
These patches define the cpu resets, the subsystem reset a load
function and also wires up the "nmi" command to issue a RESTART
interrupt as defined in the z/Architecture principles of operation.

This allows recent guest kernels with properly setup userspace
to trigger kdump:
- via guest crash
- via nmi from the host

----------------------------------------------------------------
Christian Borntraeger (5):
      s390x/kvm: Fix switch/case indentation for handle_diag
      s390: provide I/O subsystem reset
      s390: provide a cpu load normal function
      s390/cpu: split CPU reset into architectured functions
      s390: Implement load normal reset

Eugene (jno) Dvurechenski (2):
      s390/kvm: basic implementation of diagnose 308 subcode 6
      s390: wire up nmi command to raise a RESTART interrupt on S390

 cpus.c                     | 14 ++++++++++
 hmp-commands.hx            |  4 +--
 hw/s390x/s390-virtio-ccw.c | 15 ++++++++++
 qmp-commands.hx            |  2 +-
 target-s390x/cpu-qom.h     |  6 ++++
 target-s390x/cpu.c         | 52 ++++++++++++++++++++++++++++++++--
 target-s390x/cpu.h         | 20 +++++++++++++
 target-s390x/kvm.c         | 40 +++++++++++++++++---------
 target-s390x/misc_helper.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++
 9 files changed, 204 insertions(+), 19 deletions(-)