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Juan Quintela 7b24d32634 migration: skipped field is really obsolete. 
Has return zero for more than 10 years.

Specifically we introduced the field in 1.5.0

commit f1c72795af
Author: Peter Lieven <pl@kamp.de>
Date:   Tue Mar 26 10:58:37 2013 +0100

    migration: do not sent zero pages in bulk stage

    during bulk stage of ram migration if a page is a
    zero page do not send it at all.
    the memory at the destination reads as zero anyway.

    even if there is an madvise with QEMU_MADV_DONTNEED
    at the target upon receipt of a zero page I have observed
    that the target starts swapping if the memory is overcommitted.
    it seems that the pages are dropped asynchronously.

    this patch also updates QMP to return the number of
    skipped pages in MigrationStats.

but removed its usage in 1.5.3

commit 9ef051e553
Author: Peter Lieven <pl@kamp.de>
Date:   Mon Jun 10 12:14:19 2013 +0200

    Revert "migration: do not sent zero pages in bulk stage"

    Not sending zero pages breaks migration if a page is zero
    at the source but not at the destination. This can e.g. happen
    if different BIOS versions are used at source and destination.
    It has also been reported that migration on pseries is completely
    broken with this patch.

    This effectively reverts commit f1c72795af.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20230612193344.3796-2-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2023-07-26 10:55:56 +02:00
..
acpi.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
audio.json audio/pw: Pipewire->PipeWire case fix for user-visible text 2023-07-17 15:22:56 +04:00
authz.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
block-core.json qcow2: add discard-no-unref option 2023-06-05 13:15:42 +02:00
block-export.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
block.json block: add accounting for zone append operation 2023-05-15 08:18:10 -04:00
char.json qapi: Correct "eg." to "e.g." in documentation 2023-07-25 17:20:32 +03:00
common.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
compat.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
control.json docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
crypto.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
cryptodev.json spelling: information 2023-06-09 23:38:16 +03:00
cxl.json hw/cxl/events: Add injection of Memory Module Events 2023-06-23 02:54:40 -04:00
dump.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
error.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
introspect.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
job.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
machine-target.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
machine.json accel/tcg: remove CONFIG_PROFILER 2023-06-26 17:33:00 +02:00
meson.build meson: Replace CONFIG_SOFTMMU -> CONFIG_SYSTEM_ONLY 2023-06-20 10:01:30 +02:00
migration.json migration: skipped field is really obsolete. 2023-07-26 10:55:56 +02:00
misc-target.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
misc.json qapi: Correct "eg." to "e.g." in documentation 2023-07-25 17:20:32 +03:00
net.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
opts-visitor.c cutils: Adjust signature of parse_uint[_full] 2023-06-02 12:27:19 -05:00
pci.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
pragma.json qapi/pragma: Tidy up comments 2022-05-16 07:31:26 +02:00
qapi-clone-visitor.c qapi: Make visitor functions taking Error ** return bool, not void 2020-07-10 15:18:08 +02:00
qapi-dealloc-visitor.c qapi: Make visitor functions taking Error ** return bool, not void 2020-07-10 15:18:08 +02:00
qapi-forward-visitor.c qapi: remove needless include 2022-03-22 14:46:18 +04:00
qapi-schema.json docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
qapi-type-helpers.c monitor: introduce HumanReadableText and HMP support 2021-11-02 15:55:13 +00:00
qapi-util.c qapi: Fix stale reference to scripts/qapi.py in a comment 2022-02-28 11:39:35 +01:00
qapi-visit-core.c qapi: Factor out compat_policy_input_ok() 2021-10-29 21:27:20 +02:00
qdev.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
qmp-dispatch.c monitor: mark mixed functions that can suspend 2023-04-20 11:17:35 +02:00
qmp-event.c Replace qemu_gettimeofday() with g_get_real_time() 2022-04-06 10:50:37 +02:00
qmp-registry.c qapi: Generalize command policy checking 2021-10-29 18:24:46 +02:00
qobject-input-visitor.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
qobject-output-visitor.c qapi: Extend -compat to set policy for unstable interfaces 2021-10-29 21:28:01 +02:00
qom.json hostmem-file: add offset option 2023-05-23 16:47:03 +02:00
rdma.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
replay.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
rocker.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
run-state.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
sockets.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
stats.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
string-input-visitor.c qapi, qemu-options: make all parsing visitors parse boolean options the same 2020-11-04 12:00:40 -05:00
string-output-visitor.c qapi: remove needless include 2022-03-22 14:46:18 +04:00
tpm.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
trace-events qapi: Generalize struct member policy checking 2021-10-29 18:23:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
trace.json qapi: make the vcpu parameters deprecated for 8.1 2023-06-01 11:05:05 -04:00
transaction.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
ui.json ui: add egl-headless support on win32 2023-06-27 17:08:56 +02:00
virtio.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00
yank.json qapi: Reformat doc comments to conform to current conventions 2023-05-10 10:01:01 +02:00