Changeset 41069 in vbox for trunk/src/VBox/Runtime

Timestamp:

Apr 26, 2012 12:01:00 PM (13 years ago)

Author:

vboxsync

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

77637

Message:

GMMR0,memobj-r0drv-darwin.cpp: Moved the allocate fudge factor from GMMR0 to the darwin code. Mystery still unsolved, thought to be related to various panics as well.

File:

• trunk/src/VBox/Runtime/r0drv/darwin/memobj-r0drv-darwin.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/r0drv/darwin/memobj-r0drv-darwin.cpp

@@ -426 +426 @@
      * The kIOMemoryKernelUserShared flag just forces the result to be page aligned.
      */
+#if 1 /** @todo Figure out why this is broken. Is it only on snow leopard? Seen allocating memory for the VM structure, last page corrupted or inaccessible. */
+    size_t const cbFudged = cb + PAGE_SIZE;
+#else
+    size_t const cbFudged = cb;
+#endif
     int rc;
     IOBufferMemoryDescriptor *pMemDesc =
@@ -432 +437 @@
                                                          | kIODirectionInOut
                                                          | (fContiguous ? kIOMemoryPhysicallyContiguous : 0),
-                                                         cb,
+                                                         cbFudged,
                                                          PhysMask);
     if (pMemDesc)
@@ -439 +444 @@
         if (IORet == kIOReturnSuccess)
         {
-            void *pv = pMemDesc->getBytesNoCopy(0, cb);
+            void *pv = pMemDesc->getBytesNoCopy(0, cbFudged);
             if (pv)
             {