switch (flags & ~RAM_SAVE_FLAG_CONTINUE) {
case RAM_SAVE_FLAG_ZERO:
ch = qemu_get_byte(f);
- memset(page_buffer, ch, TARGET_PAGE_SIZE);
+ /*
+ * Can skip to set page_buffer when
+ * this is a zero page and (block->page_size == TARGET_PAGE_SIZE).
+ */
+ if (ch || !matches_target_page_size) {
+ memset(page_buffer, ch, TARGET_PAGE_SIZE);
+ }
if (ch) {
all_zero = false;
}