Changeset 30744 in vbox

Timestamp:

Jul 8, 2010 1:42:28 PM (15 years ago)

Author:

vboxsync

Message:

Skip allocated pages that are zero (pgm saved state).

File:

• trunk/src/VBox/VMM/PGMSavedState.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/PGMSavedState.cpp

@@ -1596 +1596 @@
                         if (RT_SUCCESS(rc))
                         {
+                            /* Skip allocated pages that are zero. */
+                            if (    !fLiveSave
+                                &&  ASMMemIsZeroPage(pvPage))
+                            {
+                                fZero = true;
+                                goto save_zero_page;
+                            }
+
                             memcpy(abPage, pvPage, PAGE_SIZE);
 #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
@@ -1616 +1624 @@
                     else
                     {
+save_zero_page:
                         /*
                          * Dirty zero page.