Changeset 26435 in vbox

Timestamp:

Feb 11, 2010 2:43:19 PM (15 years ago)

Author:

vboxsync

Message:

Disallow non-paged alignment allocation in RTR0MemObjAllocPhysEx for 32 bits hosts.

File:

• trunk/src/VBox/Runtime/r0drv/memobj-r0drv.cpp (modified) (2 diffs)

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

@@ -607 +607 @@
     AssertReturn(cb <= cbAligned, VERR_INVALID_PARAMETER);
     AssertReturn(PhysHighest >= cb, VERR_INVALID_PARAMETER);
+#if HC_ARCH_BITS == 32
+    /* Memory allocate in this way is typically mapped into kernel space as well; simply don't allow this
+     * on 32 bits hosts as the kernel space is too crowded already.
+     */
+    if (    uAlignment != 0
+        &&  uAlignment != PAGE_SIZE)
+        return VERR_NOT_SUPPORTED;
+#else
     AssertReturn((    uAlignment == 0 
                   ||  uAlignment == PAGE_SIZE
@@ -612 +620 @@
                   ||  uAlignment == _4M
                   ||  uAlignment == _1G), VERR_INVALID_PARAMETER);
+#endif
     RT_ASSERT_PREEMPTIBLE();