Changeset 50819 in vbox for trunk/src

Timestamp:

Mar 19, 2014 11:17:48 AM (11 years ago)

Author:

vboxsync

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

92870

Message:

VMMAll/PGMAllPool: Clear references to the shadow table while adding dirty pages to cause not-present #PFs when the guest starts using them, instead of only relying on explicit CR3 changes/page-invalidations from the guest.

File:

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

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

@@ -47 +47 @@
 DECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
 DECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
+static void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
 static void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
 static int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
@@ -1798 +1799 @@
 
     Assert(pPool->cDirtyPages == RT_ELEMENTS(pPool->aDirtyPages) || pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx == NIL_PGMPOOL_IDX);
-    return;
+
+    /*
+     * Clear all references to this shadow table. See @bugref{7298}.
+     */
+    pgmPoolTrackClearPageUsers(pPool, pPage);
 }
 # endif /* !IN_RING3 */