From e846b746502e94ce5cb148201ebdaa9c0f658741 Mon Sep 17 00:00:00 2001 From: Stefan Reiter Date: Thu, 4 Feb 2021 17:35:22 +0100 Subject: [PATCH] migration: only check page size match if RAM postcopy is enabled Postcopy may also be advised for dirty-bitmap migration only, in which case the remote page size will not be available and we'll instead read bogus data, blocking migration with a mismatch error if the VM uses hugepages. Fixes: 58110f0acb ("migration: split common postcopy out of ram postcopy") Signed-off-by: Stefan Reiter Message-Id: <20210204163522.13291-1-s.reiter@proxmox.com> Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Dr. David Alan Gilbert --- migration/ram.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/ram.c b/migration/ram.c index 46e9d4d145..72143da0ac 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3808,7 +3808,7 @@ static int ram_load_precopy(QEMUFile *f) } } /* For postcopy we need to check hugepage sizes match */ - if (postcopy_advised && + if (postcopy_advised && migrate_postcopy_ram() && block->page_size != qemu_host_page_size) { uint64_t remote_page_size = qemu_get_be64(f); if (remote_page_size != block->page_size) { -- 2.30.2