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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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4
include/hw/qdev-properties-system.h
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@ -9,6 +9,7 @@ extern const PropertyInfo qdev_prop_reserved_region;
extern const PropertyInfo qdev_prop_multifd_compression;
extern const PropertyInfo qdev_prop_mig_mode;
extern const PropertyInfo qdev_prop_granule_mode;
extern const PropertyInfo qdev_prop_zero_page_detection;
extern const PropertyInfo qdev_prop_losttickpolicy;
extern const PropertyInfo qdev_prop_blockdev_on_error;
extern const PropertyInfo qdev_prop_bios_chs_trans;
@ -50,6 +51,9 @@ extern const PropertyInfo qdev_prop_iothread_vq_mapping_list;
MigMode)
#define DEFINE_PROP_GRANULE_MODE(_n, _s, _f, _d) \
DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_granule_mode, GranuleMode)
#define DEFINE_PROP_ZERO_PAGE_DETECTION(_n, _s, _f, _d) \
DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_zero_page_detection, \
ZeroPageDetection)
#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
LostTickPolicy)