[Qemu-devel] [PATCH V6 00/10] calculate blocktime for postcopy live migration

[Alexey Perevalov]

Hello, this is 6th version of the series.

Previous version of that series at
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03117.html 

(V5 -> V6)
    - blocktime was added into hmp command. Comment from David.
    - bitmap for copied pages was added as well as check in *_begin/_end
functions. Patch uses just introduced RAMBLOCK_FOREACH. Comment from David.
    - description of receive_ufd_features/request_ufd_features. Comment from 
David.
    - commit message headers/@since references were modified. Comment from Eric.
    - also typos in documentation. Comment from Eric.
    - style and description of field in MigrationInfo. Comment from Eric.
    - ufd_check_and_apply (former ufd_version_check) is calling twice,
so my previous patch contained double allocation of blocktime context and
as a result memory leak. In this patch series it was fixed.

patch set is based on commit 56821559f0ba682fe6b367815572e6f974d329ab
"Merge remote-tracking branch 'dgilbert/tags/pull-hmp-20170517' into staging"

Alexey Perevalov (10):
  userfault: add pid into uffd_msg & update UFFD_FEATURE_*
  migration: pass MigrationIncomingState* into migration check functions
  migration: fix hardcoded function name in error report
  migration: split ufd_version_check onto receive/request features part
  migration: introduce postcopy-blocktime capability
  migration: add postcopy blocktime ctx into MigrationIncomingState
  migration: add bitmap for copied page
  migration: calculate vCPU blocktime on dst side
  migration: add postcopy total blocktime into query-migrate
  migration: postcopy_blocktime documentation

 docs/migration.txt                |  10 +
 hmp.c                             |  15 ++
 include/migration/migration.h     |  29 +++
 linux-headers/linux/userfaultfd.h |   5 +
 migration/migration.c             |  51 +++++-
 migration/postcopy-ram.c          | 375 ++++++++++++++++++++++++++++++++++++--
 migration/postcopy-ram.h          |   2 +-
 migration/ram.c                   |  63 +++++++
 migration/savevm.c                |   2 +-
 migration/trace-events            |   6 +-
 qapi-schema.json                  |  14 +-
 11 files changed, 551 insertions(+), 21 deletions(-)

-- 
1.8.3.1