The ram_save_host_page() has been modified several times since its birth. But the comment hasn't been modified as it should be. It'd better to modify the comment to explain ram_save_host_page() more clearly.
Signed-off-by: Keqian Zhu <zhukeqi...@huawei.com> Signed-off-by: Kunkun Jiang <jiangkun...@huawei.com> --- migration/ram.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 72143da0ac..fc49c3f898 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1970,15 +1970,16 @@ static int ram_save_target_page(RAMState *rs, PageSearchStatus *pss, } /** - * ram_save_host_page: save a whole host page + * ram_save_host_page: save a whole host page or the rest of a block * - * Starting at *offset send pages up to the end of the current host - * page. It's valid for the initial offset to point into the middle of - * a host page in which case the remainder of the hostpage is sent. - * Only dirty target pages are sent. Note that the host page size may - * be a huge page for this block. - * The saving stops at the boundary of the used_length of the block - * if the RAMBlock isn't a multiple of the host page size. + * Starting at pss->page send pages up to the end of the current host + * page or the boundary of used_length of the block (if the RAMBlock + * isn't a multiple of the host page size). The min one is selected. + * Only dirty target pages are sent. + * + * Note that the host page size may be a huge page for this block, it's + * valid for the initial offset to point into the middle of a host page + * in which case the remainder of the hostpage is sent. * * Returns the number of pages written or negative on error * -- 2.23.0