From: Yuan Liu <[email protected]> When QPL compression is enabled on the migration channel and the same dirty page changes from a normal page to a zero page in the iterative memory copy, the dirty page will not be updated to a zero page again on the target side, resulting in incorrect memory data on the source and target sides.
The root cause is that the target side does not record the normal pages to the receivedmap. The solution is to add ramblock_recv_bitmap_set_offset in target side to record the normal pages. Signed-off-by: Yuan Liu <[email protected]> Reviewed-by: Jason Zeng <[email protected]> Reviewed-by: Peter Xu <[email protected]> Message-Id: <[email protected]> Signed-off-by: Fabiano Rosas <[email protected]> (cherry picked from commit 2588a5f99b0c3493b4690e3ff01ed36f80e830cc) Signed-off-by: Michael Tokarev <[email protected]> diff --git a/migration/multifd-qpl.c b/migration/multifd-qpl.c index bbe466617f..88e2344af2 100644 --- a/migration/multifd-qpl.c +++ b/migration/multifd-qpl.c @@ -679,6 +679,7 @@ static int multifd_qpl_recv(MultiFDRecvParams *p, Error **errp) qpl->zlen[i] = be32_to_cpu(qpl->zlen[i]); assert(qpl->zlen[i] <= multifd_ram_page_size()); zbuf_len += qpl->zlen[i]; + ramblock_recv_bitmap_set_offset(p->block, p->normal[i]); } /* read compressed pages */ -- 2.39.5
