From: David Hildenbrand <da...@redhat.com>
Unfortunately, commit f7b9dcfbcf44 broke populate_read_range(): the loop
end condition is very wrong, resulting in that function not populating the
full range. Lets' fix that.
Fixes: f7b9dcfbcf44 ("migration/ram: Factor out populating pages readable in
ram_block_populate_pages()")
Cc: qemu-sta...@nongnu.org
Reviewed-by: Peter Xu <pet...@redhat.com>
Reviewed-by: Juan Quintela <quint...@redhat.com>
Signed-off-by: David Hildenbrand <da...@redhat.com>
Signed-off-by: Juan Quintela <quint...@redhat.com>
(cherry picked from commit 5f19a4491941fdc5c5b50ce4ade6ffffe0f591b4)
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
---
migration/ram.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index 8062713c75..f25ebd9620 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -1765,13 +1765,15 @@ out:
static inline void populate_read_range(RAMBlock *block, ram_addr_t offset,
ram_addr_t size)
{
+ const ram_addr_t end = offset + size;
+
/*
* We read one byte of each page; this will preallocate page tables if
* required and populate the shared zeropage on MAP_PRIVATE anonymous
memory
* where no page was populated yet. This might require adaption when
* supporting other mappings, like shmem.
*/
- for (; offset < size; offset += block->page_size) {
+ for (; offset < end; offset += block->page_size) {
char tmp = *((char *)block->host + offset);
/* Don't optimize the read out */
--
2.30.2
