Changeset 9752 in vbox for trunk/src/VBox/VMM/VMMAll/PGMAll.cpp

Timestamp:

Jun 17, 2008 10:14:26 AM (16 years ago)

Author:

vboxsync

Message:

PAE & AMD64 paging updates.

• create references to upper level shadow descriptors
• don't flush lower levels if an upper level table entry changes

File:

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

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

@@ -779 +779 @@
 
         Assert(!(pPdpe->u & X86_PDPE_PG_MASK));
-        rc = pgmPoolAlloc(pVM, pPdptGst->a[iPdPt].u & X86_PDPE_PG_MASK, PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD, PGMPOOL_IDX_PDPT, iPml4e * X86_PG_PAE_ENTRIES + iPdPt, &pShwPage);
+        /* Create a reference back to the PML4E by using the index in its shadow page. */
+        rc = pgmPoolAlloc(pVM, pPdptGst->a[iPdPt].u & X86_PDPE_PG_MASK, PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD, pShwPage->idx, iPdPt, &pShwPage);
         if (rc == VERR_PGM_POOL_FLUSHED)
             return VINF_PGM_SYNC_CR3;
@@ -825 +826 @@
 
     const unsigned iPdPt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_AMD64;
-    PX86PDPT  pPdpt = (PX86PDPT)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);    
+    PX86PDPT  pPdpt = (PX86PDPT)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
     PX86PDPE  pPdpe = &pPdpt->a[iPdPt];