From 8634af8344dbde8339801ac497a01ae8ed129dbf Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sun, 31 Jul 2011 22:47:58 +0300 Subject: [PATCH] memory: synchronize dirty bitmap before unmapping a range When a range is being unmapped, ask accelerators (e.g. kvm) to synchronize the dirty bitmap to avoid losing information forever. Fixes grub2 screen update. Signed-off-by: Avi Kivity Signed-off-by: Anthony Liguori --- memory.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/memory.c b/memory.c index 5c6e63d..5f20320 100644 --- a/memory.c +++ b/memory.c @@ -245,6 +245,10 @@ static void as_memory_range_add(AddressSpace *as, FlatRange *fr) static void as_memory_range_del(AddressSpace *as, FlatRange *fr) { + if (fr->dirty_log_mask) { + cpu_physical_sync_dirty_bitmap(fr->addr.start, + fr->addr.start + fr->addr.size); + } cpu_register_physical_memory(fr->addr.start, fr->addr.size, IO_MEM_UNASSIGNED); } -- 2.7.4