devel/migration/postcopy.rst

13 transferred, and accesses to pages that are yet to be transferred cause
59     (using madvise) to ensure that no new huge pages are created
60     during the postcopy phase, and to cause any huge pages that
68     pages off the migration stream, while the main thread carries
71     any access to missing pages (on Linux using the 'userfault'
117 During postcopy the source scans the list of dirty pages and sends them
120 scanning restarts from the requested location.  This causes requested pages
121 to be sent quickly, and also causes pages directly after the requested page
122 to be sent quickly in the hope that those pages are likely to be used
175 pages, however during postcopy the CPUs are stopped and nothing should
177 pages are sent during postcopy.
210     can be pages sent right during the window when the network is
211     interrupted, then the handshake will guarantee pages lost in-flight
219 running, and it will not be impacted from any page access to pages that
221 However, if any of the missing pages got accessed on destination VM, the VM
225 The impact of accessing missing pages can be relevant to different
228 accessing missing pages.
275        pages have arrived
291 allows urgent pages (those got page fault requested from destination QEMU