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[00/11] Multifd zero page support

Message ID 20221128100422.13522-1-quintela@redhat.com
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Series Multifd zero page support | expand

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Juan Quintela Nov. 28, 2022, 10:04 a.m. UTC 
Based on top of my next-8.0 branch.

- rebased on top of latest upstream
- lots of minor fixes
- start support for atomic counters
  * we need to move ram_limit_used/max to migration.c
  * that means fixing rdma.c
  * and test-vmstate.

So I am donig that right now.

Juan Quintela (11):
  migration: Update atomic stats out of the mutex
  migration: Make multifd_bytes atomic
  multifd: We already account for this packet on the multifd thread
  multifd: Count the number of bytes sent correctly
  migration: Make ram_save_target_page() a pointer
  multifd: Make flags field thread local
  multifd: Prepare to send a packet without the mutex held
  multifd: Add capability to enable/disable zero_page
  multifd: Support for zero pages transmission
  multifd: Zero pages transmission
  So we use multifd to transmit zero pages.

 qapi/migration.json    |   8 ++-
 migration/migration.h  |   1 +
 migration/multifd.h    |  36 ++++++++++--
 migration/ram.h        |   1 +
 hw/core/machine.c      |   1 +
 migration/migration.c  |  16 +++++-
 migration/multifd.c    | 123 +++++++++++++++++++++++++++++++----------
 migration/ram.c        |  51 +++++++++++++++--
 migration/trace-events |   8 +--
 9 files changed, 197 insertions(+), 48 deletions(-)