From 094a3dbc55df1bbd2169eaf784cb75b594a72941 Mon Sep 17 00:00:00 2001 From: Steve Sistare Date: Thu, 27 Feb 2025 06:48:01 -0800 Subject: migration: ram block cpr blockers Unlike cpr-reboot mode, cpr-transfer mode cannot save volatile ram blocks in the migration stream file and recreate them later, because the physical memory for the blocks is pinned and registered for vfio. Add a blocker for volatile ram blocks. Also add a blocker for RAM_GUEST_MEMFD. Preserving guest_memfd may be sufficient for CPR, but it has not been tested yet. Signed-off-by: Steve Sistare Reviewed-by: Fabiano Rosas Reviewed-by: Peter Xu Reviewed-by: David Hildenbrand Message-ID: <1740667681-257312-1-git-send-email-steven.sistare@oracle.com> Signed-off-by: Fabiano Rosas --- include/exec/memory.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/exec/memory.h') diff --git a/include/exec/memory.h b/include/exec/memory.h index 78c4e0aec8..d09af58c97 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -3203,6 +3203,9 @@ bool ram_block_discard_is_disabled(void); */ bool ram_block_discard_is_required(void); +void ram_block_add_cpr_blocker(RAMBlock *rb, Error **errp); +void ram_block_del_cpr_blocker(RAMBlock *rb); + #endif #endif -- cgit 1.4.1