[PULL 00/33] migration queue

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

The following changes since commit 2b049d2c8dc01de750410f8f1a4eac498c04c723:

  Merge tag 'pull-aspeed-20220622' of https://github.com/legoater/qemu into 
staging (2022-06-22 07:27:06 -0700)

are available in the Git repository at:

  https://gitlab.com/dagrh/qemu.git tags/pull-migration-20220622b

for you to fetch changes up to 9c6eb6dc3785a280b504195d308da082641af2a7:

  tests: Add dirty page rate limit test (2022-06-22 19:33:43 +0100)

----------------------------------------------------------------
Migration pull 2022-06-22

Compared to Juan's pull:
  a) Hopefully fixed non-Linux builds
    (Local build test on mingw64 works
    Note: the zero-copy capability is now
    defined on non-Linux systems)
  b) Added Hyman's series - it had been
    on queue for a while (sorry for the delay)
  c) Fixed up a whole bunch of check-patch failures
    - please use it!

In this today migration PULL request:
- Dainiel Berrangé - qemufileops cleanup
- Leonardo Bras  - cleanups for zero copy
- Juan Quintela  - RDMA cleanups
- Hyman Huang - per-vcpu dirty ring work

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

----------------------------------------------------------------
Daniel P. Berrangé (21):
      io: add a QIOChannelNull equivalent to /dev/null
      migration: switch to use QIOChannelNull for dummy channel
      migration: remove unreachble RDMA code in save_hook impl
      migration: rename rate limiting fields in QEMUFile
      migration: rename 'pos' field in QEMUFile to 'bytes_processed'
      migration: rename qemu_ftell to qemu_file_total_transferred
      migration: rename qemu_update_position to qemu_file_credit_transfer
      migration: rename qemu_file_update_transfer to qemu_file_acct_rate_limit
      migration: introduce a QIOChannel impl for BlockDriverState VMState
      migration: convert savevm to use QIOChannelBlock for VMState
      migration: stop passing 'opaque' parameter to QEMUFile hooks
      migration: hardcode assumption that QEMUFile is backed with QIOChannel
      migration: introduce new constructors for QEMUFile
      migration: remove unused QEMUFileGetFD typedef / qemu_get_fd method
      migration: remove the QEMUFileOps 'shut_down' callback
      migration: remove the QEMUFileOps 'set_blocking' callback
      migration: remove the QEMUFileOps 'close' callback
      migration: remove the QEMUFileOps 'get_buffer' callback
      migration: remove the QEMUFileOps 'writev_buffer' callback
      migration: remove the QEMUFileOps 'get_return_path' callback
      migration: remove the QEMUFileOps abstraction

Hyman Huang (8):
      accel/kvm/kvm-all: Refactor per-vcpu dirty ring reaping
      cpus: Introduce cpu_list_generation_id
      migration/dirtyrate: Refactor dirty page rate calculation
      softmmu/dirtylimit: Implement vCPU dirtyrate calculation periodically
      accel/kvm/kvm-all: Introduce kvm_dirty_ring_size function
      softmmu/dirtylimit: Implement virtual CPU throttle
      softmmu/dirtylimit: Implement dirty page rate limit
      tests: Add dirty page rate limit test

Juan Quintela (1):
      migration: Remove RDMA_UNREGISTRATION_EXAMPLE

Leonardo Bras (3):
      QIOChannelSocket: Introduce assert and reduce ifdefs to improve 
readability
      QIOChannelSocket: Fix zero-copy send so socket flush works
      migration: Change zero_copy_send from migration parameter to migration 
capability

 accel/kvm/kvm-all.c               |  46 ++-
 accel/stubs/kvm-stub.c            |   5 +
 cpus-common.c                     |   8 +
 hmp-commands-info.hx              |  13 +
 hmp-commands.hx                   |  32 ++
 include/exec/cpu-common.h         |   1 +
 include/exec/memory.h             |   5 +-
 include/hw/core/cpu.h             |   6 +
 include/io/channel-null.h         |  55 ++++
 include/monitor/hmp.h             |   3 +
 include/sysemu/dirtylimit.h       |  37 +++
 include/sysemu/dirtyrate.h        |  28 ++
 include/sysemu/kvm.h              |   2 +
 io/channel-null.c                 | 237 +++++++++++++++
 io/channel-socket.c               |  19 +-
 io/meson.build                    |   1 +
 io/trace-events                   |   3 +
 migration/block.c                 |  10 +-
 migration/channel-block.c         | 195 +++++++++++++
 migration/channel-block.h         |  59 ++++
 migration/channel.c               |   4 +-
 migration/colo.c                  |   5 +-
 migration/dirtyrate.c             | 227 ++++++++------
 migration/dirtyrate.h             |   7 +-
 migration/meson.build             |   2 +-
 migration/migration.c             |  68 ++---
 migration/multifd.c               |   4 +-
 migration/qemu-file-channel.c     | 194 ------------
 migration/qemu-file-channel.h     |  32 --
 migration/qemu-file.c             | 193 ++++++------
 migration/qemu-file.h             | 125 ++++----
 migration/ram.c                   |   8 +-
 migration/rdma.c                  | 185 +++---------
 migration/savevm.c                |  55 +---
 migration/vmstate.c               |   5 +-
 monitor/hmp-cmds.c                |   6 -
 qapi/migration.json               | 113 +++++--
 softmmu/dirtylimit.c              | 601 ++++++++++++++++++++++++++++++++++++++
 softmmu/meson.build               |   1 +
 softmmu/trace-events              |   7 +
 tests/qtest/migration-helpers.c   |  22 ++
 tests/qtest/migration-helpers.h   |   2 +
 tests/qtest/migration-test.c      | 255 ++++++++++++++++
 tests/qtest/qmp-cmd-test.c        |   2 +
 tests/unit/meson.build            |   1 +
 tests/unit/test-io-channel-null.c |  95 ++++++
 tests/unit/test-vmstate.c         |   5 +-
 47 files changed, 2219 insertions(+), 770 deletions(-)
 create mode 100644 include/io/channel-null.h
 create mode 100644 include/sysemu/dirtylimit.h
 create mode 100644 include/sysemu/dirtyrate.h
 create mode 100644 io/channel-null.c
 create mode 100644 migration/channel-block.c
 create mode 100644 migration/channel-block.h
 delete mode 100644 migration/qemu-file-channel.c
 delete mode 100644 migration/qemu-file-channel.h
 create mode 100644 softmmu/dirtylimit.c
 create mode 100644 tests/unit/test-io-channel-null.c