According to the comment, when the host page is a huge page, the
migration_rate_limit() should be executed. If not, this function
can be omitted to save time.
Signed-off-by: Keqian Zhu <zhukeqi...@huawei.com>
Signed-off-by: Kunkun Jiang <jiangkun...@huawei.com>
---
migration/ram.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index fc49c3f898..c7e18dc2fc 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2017,7 +2017,9 @@ static int ram_save_host_page(RAMState *rs,
PageSearchStatus *pss,
pages += tmppages;
pss->page++;
/* Allow rate limiting to happen in the middle of huge pages */
- migration_rate_limit();
+ if (pagesize_bits > 1) {
+ migration_rate_limit();
+ }
} while ((pss->page & (pagesize_bits - 1)) &&
offset_in_ramblock(pss->block,
((ram_addr_t)pss->page) << TARGET_PAGE_BITS));
--
2.23.0
