Use qemu_put_buffer_async for guest memory pages

This will remove an unneeded copy of guest memory pages. For the page header and device state we still copy the data to the static buffer the other option is to allocate the memory on demand which is more expensive. Signed-off-by: Orit Wasserman <[email protected]> Signed-off-by: Juan Quintela <[email protected]>
paulhart27 · Mar 26, 2013 · 500f006 · 500f006
1 parent 6181ec2
commit 500f006
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch_init.c b/arch_init.c
@@ -478,7 +478,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
             /* XBZRLE overflow or normal page */
             if (bytes_sent == -1) {
                 bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
-                qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
+                qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE);
                 bytes_sent += TARGET_PAGE_SIZE;
                 acct_info.norm_pages++;
             }