Merge tag 'migration-20231031-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231031)

Hi

This is repeat of the Migration PULL for 20231020.
- I remove

Merge tag 'migration-20231031-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231031)

Hi

This is repeat of the Migration PULL for 20231020.
- I removed vmstate_register(big problems with s390x)
- I added yet more countes (juan)

CI: https://gitlab.com/juan.quintela/qemu/-/pipelines/1055797950

Please apply.

Thanks, Juan.

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# gpg: Signature made Tue 31 Oct 2023 18:01:26 JST
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20231031-pull-request' of https://gitlab.com/juan.quintela/qemu: (38 commits)
qemu-file: Make qemu_fflush() return errors
migration: Remove transferred atomic counter
migration: Use migration_transferred_bytes()
qemu-file: Simplify qemu_file_get_error()
migration: migration_rate_limit_reset() don't need the QEMUFile
migration: migration_transferred_bytes() don't need the QEMUFile
qemu-file: Remove _noflush from qemu_file_transferred_noflush()
qemu_file: Remove unused qemu_file_transferred()
migration: Use the number of transferred bytes directly
qemu_file: total_transferred is not used anymore
qemu_file: Use a stat64 for qemu_file_transferred
qemu-file: Don't increment qemu_file_transferred at qemu_file_fill_buffer
migration: Stop migration immediately in RDMA error paths
migration: Deprecate old compression method
migration: Deprecate block migration
migration: migrate 'blk' command option is deprecated.
migration: migrate 'inc' command option is deprecated.
qemu-iotests: Filter warnings about block migration being deprecated
migration: set file error on subsection loading
migration: rename vmstate_save_needed->vmstate_section_needed
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

migration: migration_rate_limit_reset() don't need the QEMUFile

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231025091117

migration: migration_rate_limit_reset() don't need the QEMUFile

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231025091117.6342-9-quintela@redhat.com>

show more ...

migration: migration_transferred_bytes() don't need the QEMUFile

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <2023102509111

migration: migration_transferred_bytes() don't need the QEMUFile

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231025091117.6342-8-quintela@redhat.com>

show more ...

migration: Use the number of transferred bytes directly

We only use migration_transferred_bytes() to calculate the rate_limit,
for that we don't need to flush whatever is on the qemu_file buffer.
Re

migration: Use the number of transferred bytes directly

We only use migration_transferred_bytes() to calculate the rate_limit,
for that we don't need to flush whatever is on the qemu_file buffer.
Remember that the buffer is really small (normal case is 32K if we use
iov's can be 64 * TARGET_PAGE_SIZE), so this is not relevant to
calculations.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231025091117.6342-5-quintela@redhat.com>

show more ...

Merge tag 'migration-20231017-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231017)

Hi

Same that yesterday one, except:
- rebased to latest (clean r

Merge tag 'migration-20231017-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231017)

Hi

Same that yesterday one, except:
- rebased to latest (clean rebase)
- fixed 64 bits read on big endian host

CI: https://gitlab.com/juan.quintela/qemu/-/pipelines/1039214198

Please, apply.

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# gpg: Signature made Tue 17 Oct 2023 04:29:25 EDT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20231017-pull-request' of https://gitlab.com/juan.quintela/qemu: (38 commits)
migration/multifd: Clarify Error usage in multifd_channel_connect
migration/multifd: Unify multifd_send_thread error paths
migration/multifd: Remove direct "socket" references
migration/ram: Merge save_zero_page functions
migration/ram: Move xbzrle zero page handling into save_zero_page
migration/ram: Stop passing QEMUFile around in save_zero_page
migration/ram: Remove RAMState from xbzrle_cache_zero_page
migration/ram: Refactor precopy ram loading code
multifd: reset next_packet_len after sending pages
multifd: fix counters in multifd_send_thread
migration: check for rate_limit_max for RATE_LIMIT_DISABLED
migration: Improve json and formatting
migration/rdma: Remove all "ret" variables that are used only once
migration/rdma: Declare for index variables local
migration/rdma: Use i as for index instead of idx
migration/rdma: Check sooner if we are in postcopy for save_page()
migration/rdma: Remove qemu_ prefix from exported functions
migration/rdma: Move rdma constants from qemu-file.h to rdma.h
qemu-file: Remove QEMUFileHooks
migration/rdma: Create rdma_control_save_page()
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

migration: check for rate_limit_max for RATE_LIMIT_DISABLED

In migration rate limiting atomic operations are used
to read the rate limit variables and transferred bytes and
they are expensive. Check

migration: check for rate_limit_max for RATE_LIMIT_DISABLED

In migration rate limiting atomic operations are used
to read the rate limit variables and transferred bytes and
they are expensive. Check first if rate_limit_max is equal
to RATE_LIMIT_DISABLED and return false immediately if so.

Note that with this patch we will also will stop flushing
by not calling qemu_fflush() from migration_transferred_bytes()
if the migration rate is not exceeded.
This should be fine since migration thread calls in the loop
migration_update_counters from migration_rate_limit() that
calls the migration_transferred_bytes() and flushes there.

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231011184358.97349-2-elena.ufimtseva@oracle.com>

show more ...

Merge tag 'migration-20231002-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231002)

In this migration pull request:

- Refactor repeated call of yank

Merge tag 'migration-20231002-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231002)

In this migration pull request:

- Refactor repeated call of yank_unregister_instance (tejus)
- More migraton-test changes

Please, apply.

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# gpg: Signature made Mon 02 Oct 2023 08:20:14 EDT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20231002-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration/rdma: Simplify the function that saves a page
migration: Remove unused qemu_file_credit_transfer()
migration/rdma: Don't use imaginary transfers
migration/rdma: Remove QEMUFile parameter when not used
migration/RDMA: It is accounting for zero/normal pages in two places
migration: Don't abuse qemu_file transferred for RDMA
migration: Use qemu_file_transferred_noflush() for block migration.
migration: Refactor repeated call of yank_unregister_instance
migration-test: simplify shmem_opts handling
migration-test: dirtylimit checks for x86_64 arch before
migration-test: Add bootfile_create/delete() functions
migration-test: bootpath is the same for all tests and for all archs
migration-test: Create kvm_opts

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

migration: Don't abuse qemu_file transferred for RDMA

Just create a variable for it, the same way that multifd does. This
way it is safe to use for other thread, etc, etc.

Reviewed-by: Leonardo Br

migration: Don't abuse qemu_file transferred for RDMA

Just create a variable for it, the same way that multifd does. This
way it is safe to use for other thread, etc, etc.

Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230515195709.63843-11-quintela@redhat.com>

show more ...

Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial-patches 25-07-2023

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Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial-patches 25-07-2023

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# gpg: Signature made Tue 25 Jul 2023 15:23:52 BST
# gpg: using RSA key 7B73BAD68BE7A2C289314B22701B4F6B1A693E59
# gpg: issuer "mjt@tls.msk.ru"
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@corpit.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@debian.org>" [full]
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5
# Subkey fingerprint: 7B73 BAD6 8BE7 A2C2 8931 4B22 701B 4F6B 1A69 3E59

* tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu:
qapi: Correct "eg." to "e.g." in documentation
hw/pci: add comment to explain checking for available function 0 in pci hotplug
target/tricore: Rename tricore_feature
hw/9pfs: spelling fixes
other architectures: spelling fixes
arm: spelling fixes
s390x: spelling fixes
migration: spelling fixes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

migration: spelling fixes

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Fabiano Rosas <farosas@suse.de>

Merge tag 'migration-20230518-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

Based on latest reviewed parts of migration:
- Disable colo (vladimir)
-

Merge tag 'migration-20230518-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

Based on latest reviewed parts of migration:
- Disable colo (vladimir)
- Migration atomic counters (juan)

Please apply.

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# gpg: Signature made Thu 18 May 2023 10:12:53 AM PDT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [undefined]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20230518-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration: Fix duplicated included in meson.build
migration/multifd: Compute transferred bytes correctly
migration: We don't need the field rate_limit_used anymore
migration: Use migration_transferred_bytes() to calculate rate_limit
migration: Add a trace for migration_transferred_bytes
migration: Move migration_total_bytes() to migration-stats.c
migration: Move rate_limit_max and rate_limit_used to migration_stats
qemu-file: Account for rate_limit usage on qemu_fflush()
migration: Don't use INT64_MAX for unlimited rate
migration: process_incoming_migration_co(): move colo part to colo
migration: split migration_incoming_co
configure: add --disable-colo-proxy option

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

migration: We don't need the field rate_limit_used anymore

Since previous commit, we calculate how much data we have send with
migration_transferred_bytes() so no need to maintain this counter and
r

migration: We don't need the field rate_limit_used anymore

Since previous commit, we calculate how much data we have send with
migration_transferred_bytes() so no need to maintain this counter and
remember to always update it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843-10-quintela@redhat.com>

show more ...

migration: Use migration_transferred_bytes() to calculate rate_limit

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843

migration: Use migration_transferred_bytes() to calculate rate_limit

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843-9-quintela@redhat.com>

show more ...

migration: Add a trace for migration_transferred_bytes

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843-8-quintela@re

migration: Add a trace for migration_transferred_bytes

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843-8-quintela@redhat.com>

show more ...

migration: Move migration_total_bytes() to migration-stats.c

Once there rename it to migration_transferred_bytes() and pass a
QEMUFile instead of a migration object.

Signed-off-by: Juan Quintela <q

migration: Move migration_total_bytes() to migration-stats.c

Once there rename it to migration_transferred_bytes() and pass a
QEMUFile instead of a migration object.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230515195709.63843-7-quintela@redhat.com>

show more ...

migration: Move rate_limit_max and rate_limit_used to migration_stats

These way we can make them atomic and use this functions from any
place. I also moved all functions that use rate_limit to
migr

migration: Move rate_limit_max and rate_limit_used to migration_stats

These way we can make them atomic and use this functions from any
place. I also moved all functions that use rate_limit to
migration-stats.

Functions got renamed, they are not qemu_file anymore.

qemu_file_rate_limit -> migration_rate_exceeded
qemu_file_set_rate_limit -> migration_rate_set
qemu_file_get_rate_limit -> migration_rate_get
qemu_file_reset_rate_limit -> migration_rate_reset
qemu_file_acct_rate_limit -> migration_rate_account.

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230515195709.63843-6-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

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Merge tag 'migration-20230428-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migraiton Pull request (20230428 take 2)

Hi

Dropped the compression cleanups to see if we find wha

Merge tag 'migration-20230428-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migraiton Pull request (20230428 take 2)

Hi

Dropped the compression cleanups to see if we find what is going on.

Please apply.

Later, Juan.

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# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [undefined]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20230428-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration: Drop unused parameter for migration_tls_client_create()
migration: Drop unused parameter for migration_tls_get_creds()
migration/rdma: Unfold last user of acct_update_position()
migration/rdma: Split the zero page case from acct_update_position
migration: Rename RAMStats to MigrationAtomicStats
migration: Rename ram_counters to mig_stats
migration: Move ram_stats to its own file migration-stats.[ch]
multifd: We already account for this packet on the multifd thread

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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migration: Rename RAMStats to MigrationAtomicStats

It is lousely based on MigrationStats, but that name is taken, so this
is the best one that I came with.

Signed-off-by: Juan Quintela <quintela@re

migration: Rename RAMStats to MigrationAtomicStats

It is lousely based on MigrationStats, but that name is taken, so this
is the best one that I came with.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>

---

If you have any good suggestion for the name, I am all ears.

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migration: Rename ram_counters to mig_stats

migration_stats is just too long, and it is going to have more than
ram counters in the near future.

Signed-off-by: Juan Quintela <quintela@redhat.com>
R

migration: Rename ram_counters to mig_stats

migration_stats is just too long, and it is going to have more than
ram counters in the near future.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>

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migration: Move ram_stats to its own file migration-stats.[ch]

There is already include/qemu/stats.h, so stats.h was a bad idea.
We want this file to not depend on anything else, we will move all th

migration: Move ram_stats to its own file migration-stats.[ch]

There is already include/qemu/stats.h, so stats.h was a bad idea.
We want this file to not depend on anything else, we will move all the
migration counters/stats to this struct.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>

show more ...