migration: Ensure vmstate_save() sets errp

migration/savevm.c contains some calls to vmstate_save() that are
followed by migrate_set_error() if the integer return value indicates an
error. migrate_

migration: Ensure vmstate_save() sets errp

migration/savevm.c contains some calls to vmstate_save() that are
followed by migrate_set_error() if the integer return value indicates an
error. migrate_set_error() requires that the `Error *` object passed to
it is set. Therefore, vmstate_save() is assumed to always set *errp on
error.

Right now, that assumption is not met: vmstate_save_state_v() (called
internally by vmstate_save()) will not set *errp if
vmstate_subsection_save() or vmsd->post_save() fail. Fix that by adding
an *errp parameter to vmstate_subsection_save(), and by generating a
generic error in case post_save() fails (as is already done for
pre_save()).

Without this patch, qemu will crash after vmstate_subsection_save() or
post_save() have failed inside of a vmstate_save() call (unless
migrate_set_error() then happen to discard the new error because
s->error is already set). This happens e.g. when receiving the state
from a virtio-fs back-end (virtiofsd) fails.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Link: https://lore.kernel.org/r/20241015170437.310358-1-hreitz@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
(cherry picked from commit 37dfcba1a04989830c706f9cbc00450e5d3a7447)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

show more ...

Merge tag 'migration-20241030-pull-request' of https://gitlab.com/peterx/qemu into staging

Migration pull request for softfreeze

v2:
- Patch "migration: Move cpu-throttle.c from system to migration

Merge tag 'migration-20241030-pull-request' of https://gitlab.com/peterx/qemu into staging

Migration pull request for softfreeze

v2:
- Patch "migration: Move cpu-throttle.c from system to migration",
fix build on MacOS, and subject spelling

NOTE: checkpatch.pl could report a false positive on this branch:

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#21:
{include/sysemu => migration}/cpu-throttle.h | 0

That's covered by "F: migration/" entry.

Changelog:

- Peter's cleanup patch on migrate_fd_cleanup()
- Peter's cleanup patch to introduce thread name macros
- Hanna's error path fix for vmstate subsection save()s
- Hyman's auto converge enhancement on background dirty sync
- Peter's additional tracepoints for save state entries
- Thomas's build fix for OpenBSD in dirtyrate.c
- Peter's deprecation of query-migrationthreads command
- Peter's cleanup/fixes from the "export misc.h" series
- Maciej's two small patches from multifd+vfio series

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# gpg: Good signature from "Peter Xu <xzpeter@gmail.com>" [marginal]
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* tag 'migration-20241030-pull-request' of https://gitlab.com/peterx/qemu:
migration/multifd: Zero p->flags before starting filling a packet
migration/ram: Add load start trace event
migration: Drop migration_is_idle()
migration: Drop migration_is_setup_or_active()
migration: Unexport ram_mig_init()
migration: Unexport dirty_bitmap_mig_init()
migration: Take migration object refcount earlier for threads
migration: Deprecate query-migrationthreads command
migration/dirtyrate: Silence warning about strcpy() on OpenBSD
tests/migration: Add case for periodic ramblock dirty sync
migration: Support periodic RAMBlock dirty bitmap sync
migration: Remove "rs" parameter in migration_bitmap_sync_precopy
migration: Move cpu-throttle.c from system to migration
migration: Stop CPU throttling conditionally
accel/tcg/icount-common: Remove the reference to the unused header file
migration: Ensure vmstate_save() sets errp
migration: Put thread names together with macros
migration: Cleanup migrate_fd_cleanup() on accessing to_dst_file

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

show more ...

migration: Ensure vmstate_save() sets errp

migration/savevm.c contains some calls to vmstate_save() that are
followed by migrate_set_error() if the integer return value indicates an
error. migrate_

migration: Ensure vmstate_save() sets errp

migration/savevm.c contains some calls to vmstate_save() that are
followed by migrate_set_error() if the integer return value indicates an
error. migrate_set_error() requires that the `Error *` object passed to
it is set. Therefore, vmstate_save() is assumed to always set *errp on
error.

Right now, that assumption is not met: vmstate_save_state_v() (called
internally by vmstate_save()) will not set *errp if
vmstate_subsection_save() or vmsd->post_save() fail. Fix that by adding
an *errp parameter to vmstate_subsection_save(), and by generating a
generic error in case post_save() fails (as is already done for
pre_save()).

Without this patch, qemu will crash after vmstate_subsection_save() or
post_save() have failed inside of a vmstate_save() call (unless
migrate_set_error() then happen to discard the new error because
s->error is already set). This happens e.g. when receiving the state
from a virtio-fs back-end (virtiofsd) fails.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Link: https://lore.kernel.org/r/20241015170437.310358-1-hreitz@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>

show more ...

Merge tag 'migration-20240522-pull-request' of https://gitlab.com/farosas/qemu into staging

Migration pull request

- Li Zhijian's COLO minor fixes
- Marc-André's virtio-gpu fix
- Fiona's virtio-net

Merge tag 'migration-20240522-pull-request' of https://gitlab.com/farosas/qemu into staging

Migration pull request

- Li Zhijian's COLO minor fixes
- Marc-André's virtio-gpu fix
- Fiona's virtio-net USO fix
- A couple of migration-test fixes from Thomas

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# gpg: Good signature from "Fabiano Rosas <farosas@suse.de>" [unknown]
# gpg: aka "Fabiano Almeida Rosas <fabiano.rosas@suse.com>" [unknown]
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* tag 'migration-20240522-pull-request' of https://gitlab.com/farosas/qemu:
tests/qtest/migration-test: Fix the check for a successful run of analyze-migration.py
tests/qtest/migration-test: Run some basic tests on s390x and ppc64 with TCG, too
hw/core/machine: move compatibility flags for VirtIO-net USO to machine 8.1
virtio-gpu: fix v2 migration
migration: fix a typo
migration: add "exists" info to load-state-field trace
migration/colo: Tidy up bql_unlock() around bdrv_activate_all()
migration/colo: make colo_incoming_co() return void
migration/colo: Minor fix for colo error message

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

show more ...

migration: fix a typo

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Fiona Ebner <

migration: fix a typo

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>

show more ...

migration: add "exists" info to load-state-field trace

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fiona Ebner <f.ebner@prox

migration: add "exists" info to load-state-field trace

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>

show more ...

Merge tag 'pull-20231230' of https://gitlab.com/rth7680/qemu into staging

Mark VMStateField and VMStateDescription arrays const.

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Merge tag 'pull-20231230' of https://gitlab.com/rth7680/qemu into staging

Mark VMStateField and VMStateDescription arrays const.

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# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F

* tag 'pull-20231230' of https://gitlab.com/rth7680/qemu: (71 commits)
docs: Constify VMstate in examples
tests/unit/test-vmstate: Constify VMState
util/fifo8: Constify VMState
replay: Constify VMState
system: Constify VMState
migration: Constify VMState
cpu-target: Constify VMState
backends: Constify VMState
audio: Constify VMState
hw/misc/macio: Constify VMState
hw/watchdog: Constify VMState
hw/virtio: Constify VMState
hw/vfio: Constify VMState
hw/usb: Constify VMState
hw/tpm: Constify VMState
hw/timer: Constify VMState
hw/ssi: Constify VMState
hw/sparc: Constify VMState
hw/sensor: Constify VMState
hw/sd: Constify VMState
...

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

show more ...

migration: Make VMStateDescription.subsections const

Allow the array of pointers to itself be const.
Propagate this through the copies of this field.

Tested-by: Philippe Mathieu-Daudé <philmd@linar

migration: Make VMStateDescription.subsections const

Allow the array of pointers to itself be const.
Propagate this through the copies of this field.

Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231221031652.119827-2-richard.henderson@linaro.org>

show more ...

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 ...

qemu-file: Remove _noflush from qemu_file_transferred_noflush()

qemu_file_transferred() don't exist anymore, so we can reuse the name.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Ju

qemu-file: Remove _noflush from qemu_file_transferred_noflush()

qemu_file_transferred() don't exist anymore, so we can reuse the name.

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

Message-ID: <20231025091117.6342-7-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

show more ...

migration: set file error on subsection loading

commit 13cde50889237 ("vmstate: Return error in case of error") sets
QemuFile error to stop reading from it and report to the caller (checked
by unit

migration: set file error on subsection loading

commit 13cde50889237 ("vmstate: Return error in case of error") sets
QemuFile error to stop reading from it and report to the caller (checked
by unit tests). We should do the same on subsection loading error.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231024084043.2926316-8-marcandre.lureau@redhat.com>

show more ...

migration: rename vmstate_save_needed->vmstate_section_needed

The function is used on save at this point. The following commits will
use it on load.

Signed-off-by: Marc-André Lureau <marcandre.lure

migration: rename vmstate_save_needed->vmstate_section_needed

The function is used on save at this point. The following commits will
use it on load.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231024084043.2926316-5-marcandre.lureau@redhat.com>

show more ...

Merge tag 'migration-20231004-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231004)

Hi

In this series:

* make sure migration-tests get 0's (daniil)

Merge tag 'migration-20231004-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231004)

Hi

In this series:

* make sure migration-tests get 0's (daniil)
Notice that this creates a checkpatch negative, everything on that
file is volatile, no need to add a comment.

* RDMA fix from li
* MAINTAINERS
Get peter and fabiano to become co-maintainers of migration
Get Entry fro migration-rdma for Li Zhijian
* Create field_exists() (peterx)
* Improve error messages (Tejus)

Please apply.

s

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# 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-20231004-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration: Unify and trace vmstate field_exists() checks
migration: file URI offset
migration: file URI
s390x/a-b-bios: zero the first byte of each page on start
i386/a-b-bootblock: zero the first byte of each page on start
i386/a-b-bootblock: factor test memory addresses out into constants
migration/rdma: zore out head.repeat to make the error more clear
migration: Add co-maintainers for migration
MAINTAINERS: Add entry for rdma migration
migration: Update error description outside migration.c
migration/vmstate: Introduce vmstate_save_state_with_err

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

show more ...

migration: Unify and trace vmstate field_exists() checks

For both save/load we actually share the logic on deciding whether a field
should exist. Merge the checks into a helper and use it for both

migration: Unify and trace vmstate field_exists() checks

For both save/load we actually share the logic on deciding whether a field
should exist. Merge the checks into a helper and use it for both save and
load. When doing so, add documentations and reformat the code to make it
much easier to read.

The real benefit here (besides code cleanups) is we add a trace-point for
this; this is a known spot where we can easily break migration
compatibilities between binaries, and this trace point will be critical for
us to identify such issues.

For example, this will be handy when debugging things like:

https://gitlab.com/qemu-project/qemu/-/issues/932

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20230906204722.514474-1-peterx@redhat.com>

show more ...

migration: Update error description outside migration.c

A few code paths exist in the source code,where a migration is
marked as failed via MIGRATION_STATUS_FAILED, but the failure happens
outside o

migration: Update error description outside migration.c

A few code paths exist in the source code,where a migration is
marked as failed via MIGRATION_STATUS_FAILED, but the failure happens
outside of migration.c

In such cases, an error_report() call is made, however the current
MigrationState is never updated with the error description, and hence
clients like libvirt never know the actual reason for the failure.

This patch covers such cases outside of migration.c and updates the
error description at the appropriate places.

Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Tejus GK <tejus.gk@nutanix.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231003065538.244752-3-tejus.gk@nutanix.com>

show more ...

migration/vmstate: Introduce vmstate_save_state_with_err

Currently, a few code paths exist in the function vmstate_save_state_v,
which ultimately leads to a migration failure. However, an update in

migration/vmstate: Introduce vmstate_save_state_with_err

Currently, a few code paths exist in the function vmstate_save_state_v,
which ultimately leads to a migration failure. However, an update in the
current MigrationState for the error description is never done.

vmstate.c somehow doesn't seem to allow the use of migrate_set_error due
to some dependencies for unit tests. Hence, this patch introduces a new
function vmstate_save_state_with_err, which will eventually propagate
the error message to savevm.c where a migrate_set_error call can be
eventually done.

Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Tejus GK <tejus.gk@nutanix.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231003065538.244752-2-tejus.gk@nutanix.com>

show more ...

Merge tag 'pull-shadow-2023-09-29' of https://repo.or.cz/qemu/armbru into staging

-Wshadow=local patches patches for 2023-09-29

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fO

Merge tag 'pull-shadow-2023-09-29' of https://repo.or.cz/qemu/armbru into staging

-Wshadow=local patches patches for 2023-09-29

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# gpg: Signature made Fri 29 Sep 2023 04:10:35 EDT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-shadow-2023-09-29' of https://repo.or.cz/qemu/armbru: (56 commits)
disas/m68k: clean up local variable shadowing
hw/nvme: Clean up local variable shadowing in nvme_ns_init()
softmmu/device_tree: Fixup local variables shadowing
target/riscv: vector_helper: Fixup local variables shadowing
target/riscv: cpu: Fixup local variables shadowing
hw/riscv: opentitan: Fixup local variables shadowing
qemu-nbd: changes towards enabling -Wshadow=local
seccomp: avoid shadowing of 'action' variable
crypto: remove shadowed 'ret' variable
intel_iommu: Fix shadow local variables on "size"
aspeed/timer: Clean up local variable shadowing
aspeed/i3c: Rename variable shadowing a local
aspeed: Clean up local variable shadowing
aspeed/i2c: Clean up local variable shadowing
hw/arm/smmuv3-internal.h: Don't use locals in statement macros
hw/arm/smmuv3.c: Avoid shadowing variable
hw/misc/arm_sysctl.c: Avoid shadowing local variable
hw/intc/arm_gicv3_its: Avoid shadowing variable in do_process_its_cmd()
hw/acpi: changes towards enabling -Wshadow=local
test-throttle: don't shadow 'index' variable in do_test_accounting()
...

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

show more ...

migration: Clean up local variable shadowing

Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: d

migration: Clean up local variable shadowing

Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <20230921121312.1301864-3-armbru@redhat.com>

show more ...

Merge tag 'migration-20230726-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

This is the migration PULL request. It is the same than yesterday with

Merge tag 'migration-20230726-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Hi

This is the migration PULL request. It is the same than yesterday with proper PULL headers.
It pass CI. It contains:
- Fabiano rosas trheadinfo cleanups
- Hyman Huang dirtylimit changes
- Part of my changes
- Peter Xu documentation
- Tejus updato to migration descriptions
- Wei want improvements for postocpy and multifd setup

Please apply.

Thanks, Juan.

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# 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-20230726-pull-request' of https://gitlab.com/juan.quintela/qemu: (25 commits)
migration/rdma: Split qemu_fopen_rdma() into input/output functions
qemu-file: Make qemu_file_get_error_obj() static
qemu-file: Simplify qemu_file_shutdown()
qemu_file: Make qemu_file_is_writable() static
migration: Change qemu_file_transferred to noflush
qemu-file: Rename qemu_file_transferred_ fast -> noflush
qtest/migration-tests.c: use "-incoming defer" for postcopy tests
migration: enforce multifd and postcopy preempt to be set before incoming
migration: Update error description whenever migration fails
docs/migration: Update postcopy bits
migration: skipped field is really obsolete.
migration-test: machine_opts is really arch specific
migration-test: Create arch_opts
migration-test: Make machine_opts regular with other options
migration-test: Be consistent for ppc
migration: Extend query-migrate to provide dirty page limit info
migration: Implement dirty-limit convergence algo
migration: Put the detection logic before auto-converge checking
migration: Refactor auto-converge capability logic
migration: Introduce dirty-limit capability
...

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

show more ...

qemu-file: Rename qemu_file_transferred_ fast -> noflush

Fast don't say much. Noflush indicates more clearly that it is like
qemu_file_transferred but without the flush.

Reviewed-by: Philippe Math

qemu-file: Rename qemu_file_transferred_ fast -> noflush

Fast don't say much. Noflush indicates more clearly that it is like
qemu_file_transferred but without the flush.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230530183941.7223-2-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

show more ...

Merge tag 'migration-20230515-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request 20230515

Hi

On this PULL:
- use xxHash for calculate dirty_rate (andrei)
-

Merge tag 'migration-20230515-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request 20230515

Hi

On this PULL:
- use xxHash for calculate dirty_rate (andrei)
- Create qemu_target_pages_to_MiB() and use them (quintela)
- make dirtyrate target independent (quintela)
- Merge 5 patches from atomic counters series (quintela)

Please apply.

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# gpg: Signature made Mon 15 May 2023 05:33:09 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-20230515-pull-request' of https://gitlab.com/juan.quintela/qemu:
qemu-file: Remove total from qemu_file_total_transferred_*()
qemu-file: Make rate_limit_used an uint64_t
qemu-file: make qemu_file_[sg]et_rate_limit() use an uint64_t
migration: We set the rate_limit by a second
migration: A rate limit value of 0 is valid
migration: Make dirtyrate.c target independent
migration: Teach dirtyrate about qemu_target_page_bits()
migration: Teach dirtyrate about qemu_target_page_size()
Use new created qemu_target_pages_to_MiB()
softmmu: Create qemu_target_pages_to_MiB()
migration/calc-dirty-rate: replaced CRC32 with xxHash

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

show more ...

qemu-file: Remove total from qemu_file_total_transferred_*()

Function is already quite long.

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

qemu-file: Remove total from qemu_file_total_transferred_*()

Function is already quite long.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230508130909.65420-7-quintela@redhat.com>

show more ...

Merge tag 'migration-20230505-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20230505 edition)

In this series:
- fix block_bitmap_mapping (juan)
- RDMA

Merge tag 'migration-20230505-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20230505 edition)

In this series:
- fix block_bitmap_mapping (juan)
- RDMA cleanup (juan)
- qemu file cleanup (juan)

Please apply.

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# gpg: Signature made Fri 05 May 2023 01:47:17 AM BST
# 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-20230505-pull-request' of https://gitlab.com/juan.quintela/qemu:
qemu-file: Make ram_control_save_page() use accessors for rate_limit
qemu-file: Make total_transferred an uint64_t
qemu-file: remove shutdown member
qemu-file: No need to check for shutdown in qemu_file_rate_limit
migration: qemu_file_total_transferred() function is monotonic
migration: max_postcopy_bandwidth is a size parameter
migration/rdma: Check for postcopy sooner
migration/rdma: It makes no sense to recive that flag without RDMA
migration/rdma: We can calculate the rioc from the QEMUFile
migration/rdma: simplify ram_control_load_hook()
migration: Make RAM_SAVE_FLAG_HOOK a normal case entry
migration: Rename xbzrle_enabled xbzrle_started
migration: Put zero_pages in alphabetical order
migration: Document all migration_stats
migration/rdma: Don't pass the QIOChannelRDMA as an opaque
migration: Fix block_bitmap_mapping migration

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

show more ...

qemu-file: Make total_transferred an uint64_t

Change all the functions that use it. It was already passed as
uint64_t.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Daniel P. Ber

qemu-file: Make total_transferred an uint64_t

Change all the functions that use it. It was already passed as
uint64_t.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230504113841.23130-8-quintela@redhat.com>

show more ...

Merge tag 'migration-20230206-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

In this try
- rebase to latest upstream
- same than previous patch
- fix com

Merge tag 'migration-20230206-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

In this try
- rebase to latest upstream
- same than previous patch
- fix compilation on non linux (userfaultfd.h) (me)
- query-migrationthreads (jiang)
- fix race on reading MultiFDPages_t.block (zhenzhong)
- fix flush of zero copy page send reuest (zhenzhong)

Please apply.

Previous try:
It includes:
- David Hildenbrand fixes for virtio-men
- David Gilbert canary to detect problems
- Fix for rdma return values (Fiona)
- Peter Xu uffd_open fixes
- Peter Xu show right downtime for postcopy
- manish.mishra msg fix fixes
- my vfio changes.

Please apply.

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# gpg: Signature made Tue 07 Feb 2023 00:56:22 GMT
# 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-20230206-pull-request' of https://gitlab.com/juan.quintela/qemu: (30 commits)
migration: save/delete migration thread info
migration: Introduce interface query-migrationthreads
multifd: Fix flush of zero copy page send request
multifd: Fix a race on reading MultiFDPages_t.block
migration: check magic value for deciding the mapping of channels
io: Add support for MSG_PEEK for socket channel
migration/dirtyrate: Show sample pages only in page-sampling mode
migration: Perform vmsd structure check during tests
migration: Add canary to VMSTATE_END_OF_LIST
migration/rdma: fix return value for qio_channel_rdma_{readv,writev}
migration: Show downtime during postcopy phase
virtio-mem: Proper support for preallocation with migration
virtio-mem: Migrate immutable properties early
virtio-mem: Fail if a memory backend with "prealloc=on" is specified
migration/ram: Factor out check for advised postcopy
migration/vmstate: Introduce VMSTATE_WITH_TMP_TEST() and VMSTATE_BITMAP_TEST()
migration/savevm: Allow immutable device state to be migrated early (i.e., before RAM)
migration/savevm: Prepare vmdesc json writer in qemu_savevm_state_setup()
migration/savevm: Move more savevm handling into vmstate_save()
migration/ram: Optimize ram_write_tracking_start() for RamDiscardManager
...

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

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