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| author | Alexey Perevalov <a.perevalov@samsung.com> | 2017-10-05 14:13:20 +0300 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2017-10-23 18:03:41 +0200 |
| commit | f9494614898f46e59bc2243de6fb11ebbfc9cda6 (patch) | |
| tree | 4bca843ea17e88237db53722a1f7792bd527257d /scripts/git-submodule.sh | |
| parent | 727b9d7e4926755e14d9ac2b09777c51cccb9b80 (diff) | |
| download | focaccia-qemu-f9494614898f46e59bc2243de6fb11ebbfc9cda6.tar.gz focaccia-qemu-f9494614898f46e59bc2243de6fb11ebbfc9cda6.zip | |
migration: add bitmap for received page
This patch adds ability to track down already received pages, it's necessary for calculation vCPU block time in postcopy migration feature, and for recovery after postcopy migration failure. Also it's necessary to solve shared memory issue in postcopy livemigration. Information about received pages will be transferred to the software virtual bridge (e.g. OVS-VSWITCHD), to avoid fallocate (unmap) for already received pages. fallocate syscall is required for remmaped shared memory, due to remmaping itself blocks ioctl(UFFDIO_COPY, ioctl in this case will end with EEXIT error (struct page is exists after remmap). Bitmap is placed into RAMBlock as another postcopy/precopy related bitmaps. Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'scripts/git-submodule.sh')
0 files changed, 0 insertions, 0 deletions