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b04e2e86e9
Improve the source side flow upon pre_copy as of below. - Prepare the stop_copy buffers as part of moving to pre_copy. - Send to the target a record that includes the expected stop_copy size to let it optimize its stop_copy flow as well. As for sending the target this new record type (i.e. MLX5_MIGF_HEADER_TAG_STOP_COPY_SIZE) we split the current 64 header flags bits into 32 flags bits and another 32 tag bits, each record may have a tag and a flag whether it's optional or mandatory. Optional records will be ignored in the target. The above reduces the downtime upon stop_copy as the relevant data stuff is prepared ahead as part of pre_copy. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20230124144955.139901-3-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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