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  1. Feb 16, 2023
    • Avihai Horon's avatar
      linux-headers: Update to v6.2-rc8 · 93d7620c
      Avihai Horon authored 
      
Update to commit ceaa837f96ad ("Linux 6.2-rc8").

Signed-off-by: default avatarAvihai Horon <avihaih@nvidia.com>
Link: https://lore.kernel.org/r/20230216143630.25610-2-avihaih@nvidia.com


Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
      93d7620c
    • Peter Maydell's avatar
      Merge tag 'migration-20230215-pull-request' of https://gitlab.com/juan.quintela/qemu into staging · 6dffbe36
      Peter Maydell authored 
      Migration Pull request

This pull request contains:

* Add qemu_file_get_to_fd() a.k.a. make vfio happy(Avihai)
* migration/block is now DPRINTF() free zone (Philippe)
* remove res_compat and improve docs (me)

Please apply.

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# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg:                 aka "Juan Quintela <quintela@trasno.org>" [full]
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* tag 'migration-20230215-pull-request' of https://gitlab.com/juan.quintela/qemu

:
  migration: Rename res_{postcopy,precopy}_only
  migration: Remove unused res_compatible
  migration: In case of postcopy, the memory ends in res_postcopy_only
  migration/block: Convert remaining DPRINTF() debug macro to trace events
  migration/qemu-file: Add qemu_file_get_to_fd()

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      6dffbe36
    • Peter Maydell's avatar
      Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging · 003ba52a
      Peter Maydell authored 
      * block/iscsi: fix double-free on BUSY or similar statuses
* catch [accel] entry without accelerator
* target/i386: various fixes for BMI and ADX instructions
* make the contents of meson-buildoptions.sh stable

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu

:
  libqtest: ensure waitpid() is only called once
  libqtest: split qtest_spawn_qemu function
  target/i386: fix ADOX followed by ADCX
  target/i386: Fix C flag for BLSI, BLSMSK, BLSR
  target/i386: Fix BEXTR instruction
  tests/tcg/i386: Introduce and use reg_t consistently
  vl: catch [accel] entry without accelerator
  block/iscsi: fix double-free on BUSY or similar statuses
  remove unnecessary extern "C" blocks
  build: make meson-buildoptions.sh stable

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      003ba52a
  3. Feb 15, 2023
  5. Feb 14, 2023
  7. Feb 13, 2023
    • Peter Maydell's avatar
      Merge tag 'migration-20230213-pull-request' of https://gitlab.com/juan.quintela/qemu into staging · f670b3ee
      Peter Maydell authored 
      
Migration Pull request (take3)

Hi

In this PULL request:
- Added to leonardo fixes:
Fixes: b5eea99e ("migration: Add yank feature")
Reported-by: default avatarLi Xiaohui <xiaohli@redhat.com>

Please apply.

[take 2]
- rebase to latest upstream
- fix compilation of linux-user (if have_system was missing) (me)
- cleanup multifd_load_cleanup(leonardo)
- Document RAM flags (me)

Please apply.

[take 1]
This are all the reviewed patches for migration:
- AVX512 support for xbzrle (Ling Xu)
- /dev/userfaultd support (Peter Xu)
- Improve ordering of channels (Peter Xu)
- multifd cleanups (Li Zhang)
- Remove spurious files from last merge (me)
  Rebase makes that to you
- Fix mixup between state_pending_{exact,estimate} (me)
- Cache RAM size during migration (me)
- cleanup several functions (me)

Please apply.

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* tag 'migration-20230213-pull-request' of https://gitlab.com/juan.quintela/qemu

: (22 commits)
  ram: Document migration ram flags
  migration/multifd: Move load_cleanup inside incoming_state_destroy
  migration/multifd: Join all multifd threads in order to avoid leaks
  migration/multifd: Remove unnecessary assignment on multifd_load_cleanup()
  migration/multifd: Change multifd_load_cleanup() signature and usage
  migration: Postpone postcopy preempt channel to be after main
  migration: Add a semaphore to count PONGs
  migration: Cleanup postcopy_preempt_setup()
  migration: Rework multi-channel checks on URI
  Update bench-code for addressing CI problem
  AVX512 support for xbzrle_encode_buffer
  migration: I messed state_pending_exact/estimate
  migration: Make ram_save_target_page() a pointer
  migration: Calculate ram size once
  migration: Split ram_bytes_total_common() in two functions
  migration: Make find_dirty_block() return a single parameter
  migration: Simplify ram_find_and_save_block()
  util/userfaultfd: Support /dev/userfaultfd
  linux-headers: Update to v6.1
  multifd: Remove some redundant code
  ...

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      f670b3ee
    • Juan Quintela's avatar
      ram: Document migration ram flags · 7b548761
      Juan Quintela authored 
      
0x80 is RAM_SAVE_FLAG_HOOK, it is in qemu-file now.
Bigger usable flag is 0x200, noticing that.
We can reuse RAM_SAVe_FLAG_FULL.

Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarJuan Quintela <quintela@redhat.com>
      7b548761
    • Leonardo Bras's avatar
      migration/multifd: Move load_cleanup inside incoming_state_destroy · cfc3bcf3
      Leonardo Bras authored 
      
Currently running migration_incoming_state_destroy() without first running
multifd_load_cleanup() will cause a yank error:

qemu-system-x86_64: ../util/yank.c:107: yank_unregister_instance:
Assertion `QLIST_EMPTY(&entry->yankfns)' failed.
(core dumped)

The above error happens in the target host, when multifd is being used
for precopy, and then postcopy is triggered and the migration finishes.
This will crash the VM in the target host.

To avoid that, move multifd_load_cleanup() inside
migration_incoming_state_destroy(), so that the load cleanup becomes part
of the incoming state destroying process.

Running multifd_load_cleanup() twice can become an issue, though, but the
only scenario it could be ran twice is on process_incoming_migration_bh().
So removing this extra call is necessary.

On the other hand, this multifd_load_cleanup() call happens way before the
migration_incoming_state_destroy() and having this happening before
dirty_bitmap_mig_before_vm_start() and vm_start() may be a need.

So introduce a new function multifd_load_shutdown() that will mainly stop
all multifd threads and close their QIOChannels. Then use this function
instead of multifd_load_cleanup() to make sure nothing else is received
before dirty_bitmap_mig_before_vm_start().

Fixes: b5eea99e ("migration: Add yank feature")
Reported-by: default avatarLi Xiaohui <xiaohli@redhat.com>
Signed-off-by: default avatarLeonardo Bras <leobras@redhat.com>
Reviewed-by: default avatarJuan Quintela <quintela@redhat.com>
Reviewed-by: default avatarPeter Xu <peterx@redhat.com>
Signed-off-by: default avatarJuan Quintela <quintela@redhat.com>
      cfc3bcf3