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migration/postcopy: reduce memset when it is zero page and matches_target_page_size
authorWei Yang <richardw.yang@linux.intel.com>
Thu, 7 Nov 2019 12:39:02 +0000 (20:39 +0800)
committerJuan Quintela <quintela@redhat.com>
Mon, 20 Jan 2020 08:10:23 +0000 (09:10 +0100)
commit2e36bc1b884a6fc6bc626b13db4960773ad976f7
treeb1ef4cab7e96e144cadc87bd8a10acf147820a24tree
parente65cec5e5d97927d22b39167d3e8edeffc771788commit | diff
migration/postcopy: reduce memset when it is zero page and matches_target_page_size

In this case, page_buffer content would not be used.

Skip this to save some time.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
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