Changeset 26685 in vbox for trunk/src/VBox/VMM/VMMAll/PGMAllPhys.cpp

Timestamp:

Feb 22, 2010 5:48:23 PM (15 years ago)

Author:

vboxsync

Message:

Large page changes

File:

• trunk/src/VBox/VMM/VMMAll/PGMAllPhys.cpp (modified) (3 diffs)

trunk/src/VBox/VMM/VMMAll/PGMAllPhys.cpp

@@ -368 +368 @@
     Assert(!PGM_PAGE_IS_MMIO(pPage));
 
+    if (PGMIsUsingLargePages(pVM))
+    {
+        RTHCPHYS HCPhysDummy;
+
+        int rc = pgmPhysAllocLargePage(pVM, GCPhys, &HCPhysDummy);
+        if (rc == VINF_SUCCESS)
+            return rc;
+
+        /* fall back to 4kb pages. */
+    }
 
     /*
@@ -471 +481 @@
      */
     Assert(PGMIsLocked(pVM));
+    Assert(PGMIsUsingLargePages(pVM));
     Assert((GCPhys & X86_PD_PAE_MASK) == 0);
     AssertPtr(pHCPhys);
@@ -540 +551 @@
                 }
                 LogFlow(("pgmPhysAllocLargePage failed with %Rrc\n", rc));
+
+                /* If we fail once, it most likely means the host's memory is too fragmented; don't bother trying again. */
+                PGMSetLargePageUsage(pVM, false);
                 return rc;
             }