Changeset 31080 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Jul 24, 2010 5:25:32 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

64027

Message:

PGM: Micro optimizations.

File:

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

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

@@ -2006 +2006 @@
 
 /**
- * Called whenever CR0 or CR4 in a way which may change
- * the paging mode.
+ * Called whenever CR0 or CR4 in a way which may affect the paging mode.
  *
  * @returns VBox status code, with the following informational code for
@@ -2034 +2033 @@
         enmGuestMode = PGMMODE_PROTECTED;
     else if (!(cr4 & X86_CR4_PAE))
+    {
+        bool const fPse = !!(cr4 & X86_CR4_PSE);
+        if (pVCpu->pgm.s.fGst32BitPageSizeExtension != fPse)
+            Log(("PGMChangeMode: CR4.PSE %d -> %d\n", pVCpu->pgm.s.fGst32BitPageSizeExtension, fPse));
+        pVCpu->pgm.s.fGst32BitPageSizeExtension = fPse;
         enmGuestMode = PGMMODE_32_BIT;
+    }
     else if (!(efer & MSR_K6_EFER_LME))
     {