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migration/multifd: Add new migration option zero-page-detection.

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This new parameter controls where the zero page checking is running.
1. If this parameter is set to 'legacy', zero page checking is
done in the migration main thread.
2. If this parameter is set to 'none', zero page checking is disabled.

Signed-off-by: Hao Xiang <hao.xiang@bytedance.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Link: https://lore.kernel.org/r/20240311180015.3359271-4-hao.xiang@linux.dev
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Hao Xiang 2024-03-11 18:00:11 +00:00 • committed by Peter Xu
parent c3cdf3fb18
commit 5fdbb1dfcc
7 changed files with 79 additions and 3 deletions
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10
hw/core/qdev-properties-system.c
View file

@ -693,6 +693,16 @@ const PropertyInfo qdev_prop_granule_mode = {
.set_default_value = qdev_propinfo_set_default_value_enum,
};
const PropertyInfo qdev_prop_zero_page_detection = {
.name = "ZeroPageDetection",
.description = "zero_page_detection values, "
"none,legacy",
.enum_table = &ZeroPageDetection_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- Reserved Region --- */
/*